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Chapter 11.4.5 Optimisation/maintenance of vacuum pumpsDescriptionVarious vacuum pumps are used on a fertiliser production site. The selection of the right sizeand maintenance are essential for achieving efficient operation.In the example, two vacuum pumps of 500 m 3 /hour capacity and 0.3 bar vacuum were in use,one with valve throttling. The capacity had decreased due to uneven wearing and the vacuumline joints were found to be leaking. After maintenance, the vacuum is produced with only onepump.Achieved environmental benefits• reduced energy consumption• in the simple example, a saving of 15 kW was achieved.Cross-media effectsNone believed to be likely.Operational dataNo information provided.ApplicabilityGenerally applicable.EconomicsCost benefits can be assumed.Driving force for implementationCost benefits.References to literature and example plants[173, GreenBusinessCentre, 2002]18 Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers
Chapter 11.4.6 Mass balancesDescriptionMass balances are important tools for understanding a complex production site and thedevelopment of priorities for improvement strategies. Mass balances for the following items areconsidered:• nutrients: nitrogen (e.g. raw materials, products, NH 3 emissions, scrubbing liquors)• nutrients: P 2 O 5 (e.g. raw materials, products, dust emissions, phosphogypsum)• steam (including pressures and temperatures)• water (e.g. BFW, cooling water, process water, condensates, scrubbing liquors)• CO 2 (for an example, see Table 1.7)• raw material input (e.g. use of lime arising from the CNTH conversion for CANproduction).Output xInput x For re-use ReleasedAmmonia plant 1Ammonia plant 2CO 2 plant 57.1348.897.2203.9 From heating72.9 From heating75.8 From CO 2 desorptionODDA plant 63.1 5.7Urea plant 279.1Melamine plant 66.9 25.1Total released 383.4x levels in 1000 tonnes CO 2 per yearTable 1.7: Example for a CO 2 balanceThis table is based on Figure 4 of [9, Austrian UBA, 2002]An example of a water balance for the production of NPK fertilisers is given in [9, AustrianUBA, 2002].Achieved environmental benefits• enables the development of improvement strategies.Cross-media effectsNone believed to be likely.Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers 19
Page 1 and 2: EUROPEAN COMMISSIONIntegrated Pollu
Page 3 and 4: Executive SummaryEXECUTIVE SUMMARYT
Page 5 and 6: Executive SummaryII.Production and
Page 7 and 8: Executive Summarybed, using a cesiu
Page 9 and 10: Executive SummaryConversion process
Page 11 and 12: Executive SummaryBAT is to treat al
Page 13 and 14: PrefacePREFACE1. Status of this doc
Page 15 and 16: Preface5. How to understand and use
Page 17 and 18: 2.2.4.2 Gasification of heavy hydro
Page 19 and 20: 5.4.2 Hemihydrate process (HH) ....
Page 21 and 22: 10.4.3 Fluoride recovery and abatem
Page 23 and 24: Figure 8.1: Overview of the product
Page 25 and 26: Table 4.20: Energy balance of a dou
Page 27: ScopeSCOPEThis document on Large Vo
Page 30 and 31: Chapter 197 % of nitrogen fertilise
Page 32 and 33: Chapter 11.1.2.3 High exhaust gas v
Page 34 and 35: Chapter 1the SSD of NPK does not le
Page 36 and 37: Chapter 11,8Relative production cap
Page 38 and 39: Chapter 11.2.3 Supply of steam and
Page 40 and 41: Chapter 11.3 Overview of emissions
Page 42 and 43: Chapter 1ApplicabilityGenerally app
Page 44 and 45: Chapter 11.4.3 Handling excess stea
Page 48 and 49: Chapter 1Operational dataNo informa
Page 50 and 51: Chapter 1ApplicabilityEspecially ap
Page 52 and 53: Chapter 11.4.9 Environmental manage
Page 54 and 55: Chapter 1(v) Documentation- establi
Page 56 and 57: Chapter 1iv. allow for comparison w
Page 58 and 59: Chapter 1A number of studies show t
Page 60 and 61: Chapter 11.5 Common BATIn understan
Page 62 and 63: Chapter 11.5.2 BAT for environmenta
Page 64 and 65: Chapter 2Location CompanyCapacity F
Page 66 and 67: Chapter 22.2.2 Output from ammonia
Page 68 and 69: Chapter 22.2.3.2 Primary reformingT
Page 70 and 71: Chapter 2Process name Solvent/reage
Page 72 and 73: Chapter 22.2.4 Partial oxidationThe
Page 74 and 75: Chapter 2In the moving bed process,
Page 76 and 77: Chapter 22.2.6 Storage and transfer
Page 78 and 79: Chapter 2Production process Feedsto
Page 80 and 81: Chapter 22.3.2 NO x emissionsTable
Page 82 and 83: Chapter 22.3.3 Other consumption le
Page 84 and 85: Chapter 2ParameterProcessEmission l
Page 86 and 87: Chapter 22.4 Techniques to consider
Page 88 and 89: Chapter 22.4.2 Processes with reduc
Page 90 and 91: Chapter 22.4.3 Heat exchange autoth
Page 92 and 93: Chapter 22.4.4 Revamp: increase cap
Page 94 and 95: Chapter 22.4.5 Pre-reformingDescrip
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Chapter 2ApplicabilityGenerally app
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Chapter 22.4.7 Advanced process con
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Chapter 22.4.9 Combined Claus unit
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Chapter 2Operational dataSee Descri
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Chapter 22.4.12 Preheating of combu
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Chapter 22.4.14 Isothermal shift co
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Chapter 22.4.16 Stripping and recyc
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Chapter 22.4.18 Use of sulphur resi
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Chapter 22.4.20 Indirect cooling of
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Chapter 22.4.22 Ammonia removal fro
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Chapter 22.4.24 Metal recovery and
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Chapter 2Driving force for implemen
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Chapter 22.5 BAT for ammoniaBAT is
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Chapter 33 NITRIC ACID3.1 General i
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Chapter 3Pressure in bar Temperatur
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Chapter 33.2.5 Tail gas properties
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Chapter 33.3 Current emission and c
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Chapter 3N 2 O emission levelProces
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Chapter 3N 2 O emission levelProces
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Chapter 3Process typeNO x emission
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Chapter 3Process typeNO x emission
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Chapter 3140120Generation factor %1
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Chapter 33.4.2 Optimisation of the
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Chapter 33.4.3 Alternative oxidatio
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Chapter 33.4.4 Optimisation of the
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Chapter 3Achieved environmental ben
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Chapter 33.4.5 N 2 O decomposition
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Chapter 33.4.6 Catalytic N 2 O deco
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Chapter 3According to [89, Kuiper,
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Chapter 33.4.7 Combined NO x and N
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Chapter 3EconomicsInvestment costs.
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Chapter 3Operational dataSee descri
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Chapter 3NOx removal efficiency in
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Chapter 33.4.10 Addition of H 2 O 2
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Chapter 33.4.11 NO X reduction duri
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Chapter 3Installing a low temperatu
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Chapter 3NO x emission level as NO
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Chapter 3Operational dataNo specifi
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Chapter 4Country Company Location C
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Chapter 4Country Company Location C
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Chapter 4Figure 4.2 gives an overvi
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Chapter 4Two general converter type
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Chapter 4Figure 4.6 gives an impres
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Chapter 44.2.3 Sulphur sources and
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Chapter 44.2.3.5 Non-ferrous metal
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Chapter 4Sulphur source/SO 2 produc
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Chapter 410Tail gas specific SO2 lo
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Chapter 4Capacity in tonnesof 100 %
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Chapter 4Capacity in tonnesof 100 %
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Chapter 4SO 2 sourceSpent acid and
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Chapter 4Cross-media effectsWithout
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Chapter 44.4.3 Addition of a 5 th b
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Chapter 44.4.4 Application of a Cs-
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Chapter 4EUR/yearWaste gas volume (
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Chapter 44.4.6 Replacement of brick
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Chapter 4EUR/yearWaste gas volume (
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Chapter 4PlantSO 2 sourceInlet SO 2
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Chapter 44.4.10 Combination of SCR
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Chapter 44.4.14 Monitoring of SO 2
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Chapter 4EconomicsCost benefits can
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Chapter 4Energy inputRecovery and l
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Chapter 44.4.16 Minimisation and ab
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Chapter 44.4.17 Minimisation of NO
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Chapter 44.4.19 Tail gas scrubbing
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Chapter 44.4.21 Tail gas treatment:
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Chapter 4Economics[58, TAK-S, 2003]
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Chapter 4EconomicsNo specific infor
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Chapter 4BAT is to minimise and red
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Chapter 55.2 Applied processes and
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Chapter 55.2.2.1 Raw materials5.2.2
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Chapter 5OriginChinaMine/regionRare
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Chapter 55.2.2.2 GrindingDepending
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Chapter 5Emission of mg/l g/tonne P
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Chapter 55.4 Techniques to consider
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Chapter 55.4.2 Hemihydrate process
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Chapter 55.4.3 Hemi-dihydrate recry
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Chapter 55.4.4 Hemi-dihydrate recry
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Chapter 55.4.5 Di-hemihydrate recry
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Chapter 55.4.6 RepulpingDescription
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Chapter 55.4.7 Fluoride recovery an
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Chapter 55.4.8 Recovery and abateme
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Chapter 5Operational dataNo informa
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Chapter 55.4.11 Decadmation of H 3
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Chapter 55.4.12 Use of entrainment
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Chapter 5Cross-media effects• dis
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Chapter 5Cross-media effectsTable 5
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Chapter 5ApplicabilityAt present, o
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Chapter 66 HYDROFLUORIC ACID6.1 Gen
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Chapter 6Component Portion (mass co
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Chapter 66.2.4 Process gas treatmen
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Chapter 6Emission of kg/tonne HF Re
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6.4 Techniques to consider in the d
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Chapter 66.4.2 Energy recovery from
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Chapter 66.4.4 Valorisation of fluo
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Chapter 66.4.6 Scrubbing of tail ga
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6.4.7 Scrubbing of tail gases: fluo
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Chapter 66.4.8 Abatement of dust em
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Chapter 66.4.9 Waste water treatmen
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Chapter 6Cross-media effects• 5 -
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Chapter 77 NPK AND CN7.1 General in
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Chapter 77.2.3 Direct neutralisatio
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Chapter 7Fluorine compounds origina
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Chapter7Per tonne productkWh Nm 3 k
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Chapter7Emission levelmg/Nm 3 ppm k
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Chapter7Emission levelmg/Nm 3 ppm k
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7.4 Techniques to consider in the d
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Chapter7Driving force for implement
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Chapter7Achieved environmental bene
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Chapter77.4.6 Recycling warm airDes
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Chapter77.4.7 Optimising the recycl
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Chapter7Operational dataThe volume
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Chapter77.4.11 Recycling of scrubbi
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Chapter77.4.12 Waste water treatmen
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Chapter7ParameterLevelmg/Nm 3Phosph
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Chapter 88.2.1.1 Particle formation
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Chapter 8Consumption of Per tonne u
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Chapter 8Per tonne urea Unit Remark
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Chapter 8Waste water per tonne urea
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Chapter 8Pollutant Source g/tonne u
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Chapter 8Plant Emission Amount (ton
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Chapter 8Operational dataSee Table
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Chapter 8Operational dataSee Table
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Chapter 88.4.6 Redirecting fines to
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Chapter 8Existing plantCase 2Revamp
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Chapter 88.4.8 Heat integration in
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Chapter 88.4.9 Combined condensatio
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Chapter 88.4.10 Minimisation of NH
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Chapter 8Other approaches to proces
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Chapter 88.5 BAT for Urea and UANBA
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Chapter 9Country Company LocationBe
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Chapter 99.2.2 NeutralisationThe ex
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Chapter 9Scrubbing devices• packe
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Chapter 9Pollutant mg/Nm 3 g/tonne
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Chapter 99.4 Techniques to consider
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Chapter 99.4.2 Recovery of residual
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Chapter 99.4.3 Energy consideration
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Chapter 99.4.4 Steam purification a
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Chapter 99.4.5 Autothermal granulat
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Chapter 9ApplicabilityIrrigated can
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Chapter 1010 SUPERPHOSPHATES10.1 Ge
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Chapter 10Emissionto airEmissionto
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Chapter 10Input Indirect granulatio
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Chapter 10Volume5 - 10 m 3 /hourTem
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Chapter 1010.4.2 Recovery and abate
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Chapter 1010.4.4 Recycling of scrub
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Chapter 1111 CONCLUDING REMARKS11.1
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Chapter 11Production of HNO 3 : De-
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References26 Dipankar Das (1998).
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References89 Kuiper (2001). "High t
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References147 Uhde (2006). "The Uhd
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GlossaryCalculation of steam proper
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GlossaryIPCCIPPCISO 14001Intergover
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GlossaryChemical formulasAl 2 O 3Ca
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Annexes14 ANNEXES14.1 Cost calculat
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