CN108285129A - A kind of recycling of synthetic ammonia tailgas and Waste Heat Reuse technique - Google Patents

A kind of recycling of synthetic ammonia tailgas and Waste Heat Reuse technique Download PDF

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Publication number
CN108285129A
CN108285129A CN201810079178.8A CN201810079178A CN108285129A CN 108285129 A CN108285129 A CN 108285129A CN 201810079178 A CN201810079178 A CN 201810079178A CN 108285129 A CN108285129 A CN 108285129A
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gas
tail gas
ammonia
waste heat
recycling
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CN201810079178.8A
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Inventor
汪孔斌
魏奇
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Anhui Huaertai Chemical Industry Co Ltd
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Anhui Huaertai Chemical Industry Co Ltd
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Priority to CN201810079178.8A priority Critical patent/CN108285129A/en
Publication of CN108285129A publication Critical patent/CN108285129A/en
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/501—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1406—Multiple stage absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/52—Hydrogen sulfide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/04—Preparation of ammonia by synthesis in the gas phase
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/26—Carbonates or bicarbonates of ammonium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/108—Hydrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/406—Ammonia
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/12—Heat utilisation in combustion or incineration of waste
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses a kind of recycling of synthetic ammonia tailgas and Waste Heat Reuse techniques comprising following steps：S1, the tail gas for first generating synthesis ammonia recycle the active ingredient H2 in tail gas by Physical penetration device；S2, it is sent after secondly the tail gas come out through membrane separator is cooled down by water cooler to efficient ammonia recovery system, recovery ammonia tower recycles the NH3 ingredients in tail gas by the way of the absorption of multiple circulated sprinkling；S3 and then the transformation gas for removing H2S is sent to the further desulfurization of carbonization workshop section and fine de-sulfur tank to react in remaining tail gas again, generation ammonium hydrogen carbonate product；S4, then it will pass through the advance temperature raising of carrier gas preheater through the gas of efficient recovery ammonia out；S5, finally tail gas is sent to producing gas blower system and is burnt, the heat of burning produces steam, and the high-temperature flue gas after burning produces steam, the configuration of the present invention is simple again by waste heat boiler, it is easy to operation, it can be good at reaching the recycling effect to synthetic ammonia tailgas.

Description

A kind of recycling of synthetic ammonia tailgas and Waste Heat Reuse technique
Technical field
The present invention relates to environmental technology field, more particularly to a kind of synthetic ammonia tailgas recycling and Waste Heat Reuse technique.
Background technology
Ammonia is important one of inorganic chemical product, and ammonia synthesizing industry occupies an important position in national economy, removes liquid Ammonia can be directly as fertilizer outside, the nitrogenous fertilizer and various nitrogenous composite fertilizers that agriculturally use are the synthesis using ammonia as raw material Ammonia is one of large chemical products, and very important role is played the part of in producing in the industrial production, improves and safeguard synthesis ammonia Production equipment will also have far-reaching significance.Synthesis ammonia will produce a large amount of tail gas in process of production, main component H2, NH3, CH4, N2, CO, CO2 etc. need to carry out recycling classification processing to these tail gas.
The method in processing synthetic ammonia tailgas domestic at present is varied, mainly has ammine selectivity catalytic reduction method, is segmented Calcination method etc., these methods are mainly the unstable gas for polluting the environment H2, NH3, CH4, CO etc. in tail gas, Be added in the environment of catalyst and high temperature, by being chemically reacted with oxygen etc., to be fully converted to N2, NO2, H2O, CO2 etc. are discharged into the air after stablizing free of contamination gas, to reach the processing intent to synthetic ammonia tailgas, but it is above-mentioned Each method, technical process is cumbersome, complicated for operation, and investment is larger, safeguards and operation cost is higher, and fail in tail gas Certain useful gases accomplish recycling, result in the waste of useful resources, do not reach energy-efficient purpose.
Invention content
In view of the above-mentioned problems, carried out Improvement, the purpose of the present invention is to provide a kind of recycling of synthetic ammonia tailgas and Waste Heat Reuse technique.
The processing method of the present invention is inhaled by Physical penetration and liquid using the tail gas generated in production of synthetic ammonia It receives, the mode of the method for burning, has recycled the useful resources such as H2, NH3, CH4 in tail gas, can not only comprehensively utilize useful Resource, meet country energy-saving and emission-reduction policy, and can further enterprise economic benefit, the processing method include such as Lower processing step：
S1, the tail gas for first generating synthesis ammonia are by Physical penetration device, since the film in membrane separator is to each molecule Permeability it is different, recycle the active ingredient H2 in tail gas；
S2, it the H2 after recycling is sent to compressor continues with for three sections, the catalysis reaction for passing through H2 and N2 generates NH3；
S3, it is sent after secondly the tail gas come out through membrane separator is cooled down by water cooler to efficient ammonia recovery system, ammonia returns Receipts tower recycles the NH3 ingredients in tail gas by the way of the absorption of multiple circulated sprinkling；
After the ammonium hydroxide titre that S4, NH3 to be recycled are produced is met the requirements, then remaining tail gas is sent to carbonization workshop section and is taken off with essence The transformation gas of the further desulfurization removal H2S of sulphur tank is reacted, and is generated ammonium hydrogen carbonate product, is removed the sulfide in tail gas；
S5, then by through efficient recovery ammonia come out residual gas by carrier gas preheater, carry out advance temperature raising processing；
S6, finally tail gas is sent to producing gas blower system and is burnt, the heat of burning produces steam, the high temperature cigarette after burning Gas produces steam again by waste heat boiler, and the steam produced is fed directly to synthesis Steam Turbine and drives steam turbine power generation；
S7, finally discharged flue gas remove flue dust by cyclone dust collectors and enter next decontamination procedure, are held to flue gas Continuous monitoring, until qualified discharge.
As being further improved for said program：The Physical penetration device uses hydrogen molecule membrane separator, uses spiral shell Nail is fixedly mounted.
As being further improved for said program：The preheater is tubular preheater.
As being further improved for said program：The steam that the steam boiler generates directly drives steam turbine power generation.
As being further improved for said program：Hydrogen after the membrane separator separation can recycle again.
Compared with the technology of the existing same industry, usefulness of the present invention is：At classification by producing tail gas to ammonia Reason, has recycled the recycling resource such as H2, NH3, CH4 in tail gas, and generate electricity using these gases, not only Useful resources can be comprehensively utilized, meet the energy-saving and emission-reduction policy of country, and also improve the utilization rate of raw material, saved at This, improves the economic benefit of enterprise.
Description of the drawings
Attached drawing is used for providing further understanding technical solution of the present invention, and a part for constitution instruction, with this The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the process flow chart of the embodiment of the present invention.
Specific implementation mode
To make the purpose of the present invention, process program and advantage be more clear, below in conjunction with attached drawing to the reality of the present invention Example is applied to be described in detail.It should be noted that in the absence of conflict, the spy in embodiment and embodiment in the application Sign mutually can be combined arbitrarily.
Embodiment：A kind of recycling of synthetic ammonia tailgas and Waste Heat Reuse technique, include the following steps：
S1, the tail gas for first generating synthesis ammonia are by Physical penetration device, since the film in membrane separator is to each molecule Permeability it is different, recycle the active ingredient H2 in tail gas；
S2, it the H2 after recycling is sent to compressor continues with for three sections, the catalysis reaction for passing through H2 and N2 generates NH3；
S3, it is sent after secondly the tail gas come out through membrane separator is cooled down by water cooler to efficient ammonia recovery system, ammonia returns Receipts tower recycles the NH3 ingredients in tail gas by the way of the absorption of multiple circulated sprinkling；
After the ammonium hydroxide titre that S4, NH3 to be recycled are produced is met the requirements, then remaining tail gas is sent to carbonization workshop section and is taken off with essence The transformation gas of the further desulfurization removal H2S of sulphur tank is reacted, and is generated ammonium hydrogen carbonate product, is removed the sulfide in tail gas；
S5, then by through efficient recovery ammonia come out residual gas by carrier gas preheater, carry out advance temperature raising processing；
S6, finally tail gas is sent to producing gas blower system and is burnt, the heat of burning produces steam, the high temperature cigarette after burning Gas produces steam again by waste heat boiler, and the steam produced is fed directly to synthesis Steam Turbine and drives steam turbine power generation；
S7, finally discharged flue gas remove flue dust by cyclone dust collectors and enter next decontamination procedure, are held to flue gas Continuous monitoring, until qualified discharge.
The Physical penetration device uses hydrogen molecule membrane separator, is fixedly mounted using screw, installs fixed simple side Just, the hydrogen in tail gas can be carried out classification recycling by hydrogen molecule membrane separator.
The preheater is tubular preheater, and tubular preheater preheating is easy to use, and pre-heat effect is good.
The steam that the steam boiler generates directly drives steam turbine power generation, and effectively profit is carried out to the exhaust gas generated in production With, by gas burn thermal energy be converted into electric energy, saved resource and production cost, also avoided the pollution of environment.
Hydrogen after the membrane separator separation can recycle again, and the hydrogen in tail gas can be used as production ammonia Raw material utilizes again, substantially increases waste gas utilization efficiency.
Embodiment described above is only the explanation of the present invention, is not imposed any restrictions to the present invention, every according to the present invention Operation principle still falls within the present invention's to any simple modification, change and equivalence change made by above example step In protection domain.

Claims (5)

1. a kind of synthetic ammonia tailgas recycling and Waste Heat Reuse technique, which is characterized in that include the following steps：
S1, the tail gas for first generating synthesis ammonia recycle the active ingredient H2 in tail gas by Physical penetration device；
S2, it is sent to efficient ammonia recovery system, recovery ammonia tower after secondly the tail gas come out through membrane separator is cooled down by water cooler The NH3 ingredients in tail gas are recycled by the way of the absorption of multiple circulated sprinkling；
S3 then again by remaining tail gas send to the further desulfurization of carbonization workshop section and fine de-sulfur tank remove the transformation gas of H2S into Row reaction, generates ammonium hydrogen carbonate product；
S4, then it will pass through the advance temperature raising of carrier gas preheater through the gas of efficient recovery ammonia out；
S5, finally tail gas is sent to producing gas blower system and is burnt, the heat of burning produces steam, the high-temperature flue gas warp after burning It crosses waste heat boiler and produces steam again.
2. a kind of synthetic ammonia tailgas recycling according to claim 1 and Waste Heat Reuse technique, it is characterized in that：The physics Permeability apparatus uses hydrogen molecule membrane separator, is fixedly mounted using screw.
3. a kind of synthetic ammonia tailgas recycling according to claim 1 and Waste Heat Reuse technique, it is characterized in that：The preheater For tubular preheater.
4. a kind of synthetic ammonia tailgas recycling according to claim 1 and Waste Heat Reuse technique, it is characterized in that：The steam copper The steam that stove generates directly drives steam turbine power generation.
5. a kind of synthetic ammonia tailgas recycling according to claim 1 and Waste Heat Reuse technique, it is characterized in that：The UF membrane Hydrogen after device separation can recycle again.
CN201810079178.8A 2018-01-26 2018-01-26 A kind of recycling of synthetic ammonia tailgas and Waste Heat Reuse technique Pending CN108285129A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110440251A (en) * 2019-08-12 2019-11-12 厦门大学 A kind of control method and ammonia burner of ammonia burning
CN111717888A (en) * 2020-06-23 2020-09-29 山东同智创新能源科技股份有限公司 Recycling process and system applied to chemical crude ammonia waste gas treatment instead of incineration

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1314939A (en) * 1970-05-29 1973-04-26 Snam Progetti Process for dehydrating effluent gases discharged from an ammonia synthesis reactor
CN104528660A (en) * 2015-01-09 2015-04-22 成都中赢正源节能科技服务有限公司 Energy-saving process for heating tail gas through waste heat
CN104964515A (en) * 2015-07-21 2015-10-07 苏州市兴鲁空分设备科技发展有限公司 Comprehensive utilization technology and device for ammonia synthesis tail gas
CN105565270A (en) * 2016-02-04 2016-05-11 河南心连心化肥有限公司 Device and process for recovering hydrogen in synthetic ammonia purge gas

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1314939A (en) * 1970-05-29 1973-04-26 Snam Progetti Process for dehydrating effluent gases discharged from an ammonia synthesis reactor
CN104528660A (en) * 2015-01-09 2015-04-22 成都中赢正源节能科技服务有限公司 Energy-saving process for heating tail gas through waste heat
CN104964515A (en) * 2015-07-21 2015-10-07 苏州市兴鲁空分设备科技发展有限公司 Comprehensive utilization technology and device for ammonia synthesis tail gas
CN105565270A (en) * 2016-02-04 2016-05-11 河南心连心化肥有限公司 Device and process for recovering hydrogen in synthetic ammonia purge gas

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
梁家骏: "《小氮肥安全技术》", 31 August 1997, 化学工业出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110440251A (en) * 2019-08-12 2019-11-12 厦门大学 A kind of control method and ammonia burner of ammonia burning
CN110440251B (en) * 2019-08-12 2020-07-03 厦门大学 Ammonia combustion control method and ammonia combustion device
CN111717888A (en) * 2020-06-23 2020-09-29 山东同智创新能源科技股份有限公司 Recycling process and system applied to chemical crude ammonia waste gas treatment instead of incineration

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