CN107890755A - With the production technology and processing system of system for preparing sulfuric acid processing activated coke method coke oven flue gas desulphurization denitration acid vapour - Google Patents
With the production technology and processing system of system for preparing sulfuric acid processing activated coke method coke oven flue gas desulphurization denitration acid vapour Download PDFInfo
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- CN107890755A CN107890755A CN201711349665.3A CN201711349665A CN107890755A CN 107890755 A CN107890755 A CN 107890755A CN 201711349665 A CN201711349665 A CN 201711349665A CN 107890755 A CN107890755 A CN 107890755A
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- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
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- 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
- B01D53/26—Drying gases or vapours
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- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
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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
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention discloses a kind of production technology and processing system that activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid, there is provided utilizes the original H in coke-oven plant2S acidity gases (are substantially free of NH3) process unit of Sulphuric acid handles the process of sour vapour caused by activated coke method coke oven flue gas desulphurization denitration, the original appliance arrangement of this process makes full use, only need the conveying equipment and cleaner of sour vapour caused by increase activated coke method coke oven flue gas desulphurization denitration, do not increase other energy and equipment additionally, pollutant in sour vapour caused by the sour ammonia gas of coke-stove gas and activated coke method coke oven flue gas desulphurization denitration can be converted into the chemical products sulfuric acid of high added value, technique advantages of simple, investment cost is low, and without waste water, the waste discharges such as waste residue, with unexpected technique effect.
Description
Technical field
The invention belongs to coal chemical industry and petrochemical industry flue gases purification field, and in particular to be handled with system for preparing sulfuric acid
The production technology and processing system of activated coke method coke oven flue gas desulphurization denitration acid vapour.
Background technology
Coke oven is one of equipment that atmosphere pollution most serious is caused in metallurgy industry, and the pollutant component of coke oven discharge is answered
It is miscellaneous, contain nitrogen oxides (NOx), sulfur dioxide, carbon monoxide, carbon dioxide, hydrogen sulfide, hydrogen cyanide, residual ammonia, phenol and coal
Dirt, tar etc..From 1 day January in 2015, the pollutant emission of coke oven flue gas performs GB16171-2012《Coking chemistry industry is dirty
Contaminate thing discharge standard》Regulation, to the SO of coke oven flue gas2And NOXDischarge propose strict requirements.Exploitation both at home and abroad at present
Flue gas desulfurization and denitrification technology it is a lot, wherein activated coke method coke oven flue gas desulphurization denitration handling process is widely used.
Activated coke method (being also known as activated carbon method) is the absorption property using activated coke itself, to SO2And NOXCarry out physics
And chemisorbed, so as to reach a kind of method of desulfurization off sulfide effect.During for flue gases of cock oven desulphurization denitration, using waste heat
Heat energy in boiler recovered flue gas first, flue gas are passed through after being cooled in activated coke adsorptive purifier.At its desulphurization denitration
The principle of science and engineering skill is：In the presence of catalyst, in desulphurization denitration purifying column, the SO in flue gas2、O2、H2O molecules are lived
Property burnt (desulfurizing agent) catch and generate sulfuric acid, the NO in flue gasXIn NH3Reduction under react and generate the N of nontoxic pollution-free2With
H2O, coke oven flue gas are purified qualified discharge.The activated coke (desulfurizing agent) of sulfuric acid has been adsorbed in regenerator in certain temperature
Lower desorption and regeneration, i.e., sulfuric acid and C reaction generations SO in regenerator2And H2O and CO2, current technique is by containing SO2Acidity
Gas delivers to sulphur ammonium system production sulphur ammonium, and the activated coke (desulfurizing agent) after regeneration recycles in purifying.Specific technique is shown in
Fig. 1 activated coke method coke oven flue gas desulfurizing and denitrifying process schematic flow sheets.
Contain SO in existing activated coke method coke oven flue gas desulfurizing and denitrifying process2Sour gas to sulphur ammonium system production sulphur ammonium
This technique, under conditions of no oxidation, SO2And NH3Generate ammonium sulfite (NH4)2SO3, rather than generation ammonium sulfate
(NH4)2SO4, ammonium sulfate product quality can be so influenceed, its Process configuration is nor quite reasonable.
The content of the invention
It is an object of the present invention to provide one kind to utilize the original H in coke-oven plant2S acidity gases (are substantially free of NH3) Sulphuric acid technique
Device handles the technique of sour vapour caused by activated coke method coke oven flue gas desulphurization denitration, and the original device of this process makes full use sets
It is standby, it is only necessary to increase the conveying equipment and cleaner of sour vapour caused by activated coke method coke oven flue gas desulphurization denitration, do not increase additionally
Add other energy and equipment, you can by the original H of coke-stove gas2S acidity gas and activated coke method coke oven flue gas desulphurization denitration produce
Sour vapour in pollutant be converted into chemical products-sulfuric acid of high added value, technique advantages of simple, investment cost is low, and without useless
The waste discharges such as water, waste residue, there is unexpected technique effect.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of production technology that activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid, its feature exist
In：
(1) conveying of a sour vapour is increased on the sour steam pipe road of activated coke method coke oven flue gas desulphurization denitration regenerator outlet
Equipment, activated coke method coke oven flue gas desulphurization denitration regenerated acid vapour is delivered to next device；
(2) after conveying equipment increase a dust removal by filtration dehydration equipment, be filtered to remove regenerated acid vapour entrainment dust and
Moisture；
(3) system for preparing sulfuric acid is connected after dust removal by filtration dehydration equipment, the system is for handling coke oven gas desulfurization again
Raw unit contains H2Original process unit of S acid gas production sulfuric acid, the SO in the regenerated acid vapour of step (2)2Into this
System for preparing sulfuric acid, contain H with what processing coke oven gas desulfurization regeneration unit came2The SO of S acid gas burning generation2Together to system
SO is changed into sulfate system reactor3, SO3With H2O reaction generation sulfuric acid.
(4) system for preparing sulfuric acid outlet connection acid making system chimney, will be arranged outside tail gas to acid making system chimney.
Preferably, system for preparing sulfuric acid be used for handle coke oven gas desulfurization regeneration unit come contain H2S acid gas is free of
NH3。
Preferably, the sour vapour of activated coke method coke oven flue gas desulphurization denitration regenerator outlet, which removes, contains SO2Outside, CO is also contained2、
H2O、N2。
It is furthermore preferred that the technological process of production of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid
As shown in Figure 2.
System for preparing sulfuric acid be for handle coke oven gas desulfurization regeneration unit come contain H2The technique dress of S acid gas
Put.H2S acidity gases burn in incinerator generates SO2, SO2Converted under catalyst action in system for preparing sulfuric acid reactor
Into SO3, SO3With H2O reaction generation sulfuric acid.Its reaction equation is：
H2S+3/2O2→SO2+H2O
SO2+1/2O2→SO3
SO3+H2O→H2SO4
The purpose of the present invention is to handle activated coke method coke oven cigarette with the process unit of coke-oven plant's acidity gas production sulfuric acid
Sour vapour caused by desulfurization denitration.
The composition of sour vapour of activated coke method coke oven flue gas desulphurization denitration regenerator outlet is：SO2Content 5%~30%, contains
Dirt 2g/Nm3Left and right, water content 10%~40%, remaining gas are nitrogen and carbon dioxide, sour vapour for temperature 150 DEG C~350
℃。
So, one simply can be increased on the sour steam pipe road of activated coke method coke oven flue gas desulphurization denitration regenerator outlet
The conveying equipment of platform acid vapour, regenerated acid vapour again by filtering dedusting dehydration equipment (to avoid the dust of sour vapour entrainment from blocking system
Catalyst in sulfate system reactor etc.), system for preparing sulfuric acid is sent into, contains H with what coke oven gas desulfurization regeneration unit came2S's
The SO of acid gas burning generation2SO is changed into reactor together3, SO3With H2O reaction generation sulfuric acid.Caused by the method
Tail gas is together with tail gas caused by Sulphuric acid to row outside acid making system chimney.
The invention further relates to a kind of processing that activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid
System, the system include sour vapour conveying equipment, dust removal by filtration dehydration equipment, system for preparing sulfuric acid, system for preparing sulfuric acid chimney, and it is special
Sign is：The sour steam pipe road that the acid gas conveying equipment exports with activated coke method coke oven flue gas desulphurization denitration regenerator is connected, acid
The outlet of vapour conveying equipment is connected with dust removal by filtration dehydration equipment again, and the outlet of dust removal by filtration dehydration equipment is connected with system for preparing sulfuric acid,
System for preparing sulfuric acid outlet is connected with system for preparing sulfuric acid chimney.
Preferably, it is air blower to state sour vapour conveying equipment.
Preferably, the system for preparing sulfuric acid contains H for what processing coke oven gas desulfurization regeneration unit came2S acid gas life
Produce original process unit of sulfuric acid.
Preferably, the system for preparing sulfuric acid chimney is system for preparing sulfuric acid exhaust emissions chimney.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is activated coke method coke oven flue gas desulfurizing and denitrifying process flow and processing system schematic diagram
Fig. 2 is that system for preparing sulfuric acid handles the technological process of activated coke method coke oven flue gas desulphurization denitration acid vapour and processing system is shown
It is intended to
In Fig. 2：
1) waste heat utilization equipment of waste heat boiler --- coke oven flue gas；
2) blowdown stack of chimney --- coke oven flue gas；
3) purifying column --- the purifier of coke oven flue gas activated coke method desulphurization denitration；
4) regenerator --- SO in removal activity Jiao2And H2O and CO2Regenerating unit；
5) air blower --- the equipment of conveying regeneration vapour；
6) filtering dedusting dehydration equipment --- the equipment of filtering, dedusting and the dehydration of purifying regeneration vapour；
7) system for preparing sulfuric acid --- contain H by what sulphur in coke oven gas regeneration unit came2S acid gas burning generation SO2Again
It is converted into the production system of sulfuric acid；
8) system for preparing sulfuric acid chimney --- system for preparing sulfuric acid exhaust emissions chimney.
Embodiment
With reference to embodiment, the present invention is further described.
Embodiment 1
As shown in figure 1, Fig. 1 provides activated coke method coke oven flue gas desulfurizing and denitrifying process schematic flow sheet, first, using remaining
Heat boiler recovery coke oven flue gas SO2And NOXIn heat energy, flue gas is passed through after being cooled in activated coke adsorption cleaning tower, in desulfurization
In denitration purifying column, the SO in flue gas2、O2、H2O molecules are caught by activated coke (desulfurizing agent) and generate sulfuric acid, the NO in flue gasX
In NH3Reduction under react and generate the N of nontoxic pollution-free2And H2O, coke oven flue gas are purified qualified discharge.Sulfuric acid is adsorbed
Activated coke (desulfurizing agent) desorption and regeneration at a certain temperature, i.e., sulfuric acid and C reaction generations in regenerator in regenerator
SO2And H2O and CO2, SO will be contained2Sour gas deliver to sulphur ammonium system production sulphur ammonium, the activated coke (desulfurizing agent) after regeneration is to net
Recycled in changing.Because sulphur ammonium system is under conditions of no oxidation, SO2And NH3Generate ammonium sulfite (NH4)2SO3, without
It is generation ammonium sulfate (NH4)2SO4, have impact on ammonium sulfate product quality.
Embodiment 2
As shown in Fig. 2 Fig. 2 provides the technique stream of system for preparing sulfuric acid processing activated coke method coke oven flue gas desulphurization denitration acid vapour
Journey and processing system schematic diagram, the difference with embodiment 1 be, the activated coke method coke oven flue gas desulphurization denitration regenerator of embodiment 1
The SO of outlet2And H2O and CO2Regeneration vapour acid steam pipe road be no longer passed through sulphur ammonium system, will on the sour steam pipe road increase a sour vapour
Conveying equipment, activated coke method coke oven flue gas desulphurization denitration regenerated acid vapour is delivered to next device；Increase after conveying equipment
One dust removal by filtration dehydration equipment, the dust and moisture of the entrainment of regenerated acid vapour are filtered to remove, to avoid the dust of sour vapour entrainment from blocking up
Fill in catalyst in system for preparing sulfuric acid reactor etc.；Increase a system for preparing sulfuric acid, the system after dust removal by filtration dehydration equipment
Be for handle coke oven gas desulfurization regeneration unit come contain H2Original process unit of S acid gas production sulfuric acid, filtering
Remove the SO in the regenerated acid vapour of dust and moisture2Into the system for preparing sulfuric acid, come with processing coke oven gas desulfurization regeneration unit
Contain H2The SO of S acid gas burning generation2Together SO is changed into system for preparing sulfuric acid reactor3, SO3With H2O reaction lifes
Into sulfuric acid, system for preparing sulfuric acid outlet connection acid making system chimney, will be arranged outside tail gas to acid making system chimney.Activated coke method coke oven cigarette
The composition of sour vapour of desulfurization denitration regenerator outlet is：SO2Content 5%~30%, dust-laden 2g/Nm3Left and right, water content 10%
~40%, remaining gas is nitrogen and carbon dioxide, sour vapour for 150 DEG C~350 DEG C of temperature.The system for preparing sulfuric acid is used for handling
What coke oven gas desulfurization regeneration unit came contains H2S acid gas is free of NH3。
Above content is only that affiliated those skilled in the art are to being retouched to examples of the invention and explanation
Various modifications may be made or supplement for the specific embodiment stated, and design without departing from the present invention or surmounts the claims and is defined
Scope, protection scope of the present invention all should be belonged to.
Claims (8)
1. a kind of production technology that activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid, its feature exist
In：
(1) conveying for increasing a sour vapour on the sour steam pipe road of activated coke method coke oven flue gas desulphurization denitration regenerator outlet is set
It is standby, activated coke method coke oven flue gas desulphurization denitration regenerated acid vapour is delivered to next device；
(2) increase a dust removal by filtration dehydration equipment after conveying equipment, be filtered to remove the dust and moisture of the entrainment of regenerated acid vapour；
(3) system for preparing sulfuric acid is connected after dust removal by filtration dehydration equipment, the system is single for handling coke oven gas desulfurization regeneration
What member was come contains H2Original process unit of S acid gas production sulfuric acid, the SO in the regenerated acid vapour of step (2)2Into the sulphur processed
Acid system, contain H with what processing coke oven gas desulfurization regeneration unit came2The SO of S acid gas burning generation2Together to Sulphuric acid
SO is changed into system response device3, SO3With H2O reaction generation sulfuric acid.
(4) system for preparing sulfuric acid outlet connection acid making system chimney, will be arranged outside tail gas to acid making system chimney.
2. production technology as claimed in claim 1, it is characterised in that：System for preparing sulfuric acid is used for handling coke oven gas desulfurization regeneration
What unit came contains H2S acid gas is free of NH3。
3. production technology as claimed in claim 1, it is characterised in that：Activated coke method coke oven flue gas desulphurization denitration regenerator exports
Sour vapour except containing SO2Outside, CO is also contained2、H2O、N2。
4. production technology as claimed in claim 1, it is characterised in that：Activated coke method coke oven flue gas is handled with system for preparing sulfuric acid
The technological process of production of desulphurization denitration acid vapour is as shown in Figure 2.
5. a kind of processing system that activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid, the system bag
Include sour vapour conveying equipment, dust removal by filtration dehydration equipment, system for preparing sulfuric acid, system for preparing sulfuric acid chimney, it is characterised in that：The acid gas
The sour steam pipe road that conveying equipment exports with activated coke method coke oven flue gas desulphurization denitration regenerator is connected, and sour vapour conveying equipment outlet is again
Be connected with dust removal by filtration dehydration equipment, dust removal by filtration dehydration equipment outlet be connected with system for preparing sulfuric acid, system for preparing sulfuric acid export and
System for preparing sulfuric acid chimney connects.
6. sour vapour processing system as claimed in claim 5, the sour vapour conveying equipment is air blower.
7. sour vapour processing system as claimed in claim 5, the system for preparing sulfuric acid is processing coke oven gas desulfurization regeneration unit
That comes contains H2Original process unit of S acid gas production sulfuric acid.
8. sour vapour processing system as claimed in claim 5, the system for preparing sulfuric acid chimney is system for preparing sulfuric acid exhaust emissions cigarette
Chimney.
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| CN201711349665.3A CN107890755A (en) | 2017-12-15 | 2017-12-15 | With the production technology and processing system of system for preparing sulfuric acid processing activated coke method coke oven flue gas desulphurization denitration acid vapour |
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| CN201711349665.3A CN107890755A (en) | 2017-12-15 | 2017-12-15 | With the production technology and processing system of system for preparing sulfuric acid processing activated coke method coke oven flue gas desulphurization denitration acid vapour |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110624525A (en) * | 2018-06-21 | 2019-12-31 | 中国石化工程建设有限公司 | Active coke regeneration system and method |
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|---|---|---|---|---|
| CN101618863A (en) * | 2009-06-05 | 2010-01-06 | 中国石化集团南京设计院 | Method for producing sulfuric acid by using waste gas containing hydrogen sulfide |
| CN102512905A (en) * | 2011-11-16 | 2012-06-27 | 瓮福（集团）有限责任公司 | Emission reduction method for tail gas in sulfuric acid production |
| CN208082173U (en) * | 2017-12-15 | 2018-11-13 | 马鞍山钢铁股份有限公司 | The processing system of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid |
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2017
- 2017-12-15 CN CN201711349665.3A patent/CN107890755A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618863A (en) * | 2009-06-05 | 2010-01-06 | 中国石化集团南京设计院 | Method for producing sulfuric acid by using waste gas containing hydrogen sulfide |
| CN102512905A (en) * | 2011-11-16 | 2012-06-27 | 瓮福（集团）有限责任公司 | Emission reduction method for tail gas in sulfuric acid production |
| CN208082173U (en) * | 2017-12-15 | 2018-11-13 | 马鞍山钢铁股份有限公司 | The processing system of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid |
Non-Patent Citations (1)
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| 周玉琴: "《钢铁工业绿色工艺技术》", 冶金工业出版社, pages: 94 - 96 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110624525A (en) * | 2018-06-21 | 2019-12-31 | 中国石化工程建设有限公司 | Active coke regeneration system and method |
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