CN109012100A - A kind of coking exhaust treatment system - Google Patents
A kind of coking exhaust treatment system Download PDFInfo
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- CN109012100A CN109012100A CN201810964443.0A CN201810964443A CN109012100A CN 109012100 A CN109012100 A CN 109012100A CN 201810964443 A CN201810964443 A CN 201810964443A CN 109012100 A CN109012100 A CN 109012100A
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- escape pipe
- absorptive unit
- mixed solution
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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
- B01D53/75—Multi-step processes
-
- 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
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- 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
-
- 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
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/8603—Removing sulfur compounds
- B01D53/8612—Hydrogen sulfide
-
- 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
- B01D53/864—Removing carbon monoxide or hydrocarbons
-
- 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
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
Abstract
The present invention relates to a kind of coking exhaust treatment systems, first order absorption unit, second level absorptive unit, moisture separator and desulfurization workshop section including handling hydrogen sulfide, and three-level absorptive unit, gas and oil separating plant, photocatalysis+low-temperature plasma integrating device, adsorption tower, level Four absorptive unit and the crude benzol workshop section of processing benzene class.Beneficial effects of the present invention: 1, hydrogen sulfide and benezene material are greatly eliminated；2, sulphur simple substance and benzene can be obtained in technique, avoids secondary pollution.
Description
Technical field
The present invention relates to the technical field of exhaust-gas treatment more particularly to a kind of coking exhaust treatment systems.
Background technique
With the development of society, the environmental consciousness of people is more more and more intense, on the one hand, expanding economy recognizes in people
Certain pollution is inevitably generated at this stage, and on the other hand, the progress of the mankind proposes the living environment locating for oneself
Higher requirement, environmental protection administrations at different levels are also increasingly stringenter the limitation of pollutant effulent, how to obtain economic benefit and ring
Border be uniformly facing mankind new problem, and at this stage solve pollution sources effective measures first is that controlling pollution sources
Reason, is preferably minimized it to the pollution effect of periphery ecological environment, and total emission volumn and concentration of emission reach (or being better than) country
With the requirement of local corresponding laws and regulations and specification, the coking plant production of petro-chemical corporation, the gas that pressure release is discharged before the discharging of the coke
And water, it is more to belong to intermittent in line, contained waste gas components.Due to device dote on the water that is discharged greatly it is gentle in amount containing cinder
Greatly, impact force is big, heat is high, smell is big, be difficult to centralized collection and distributes reasons, the petrochemical industry units such as range is wide also this
Solution, be also impossible to reach its environmental requirement, mutually cope with operator and the periphery common people and affect health
Etc. problems.
Summary of the invention
The purpose of the present invention is making improvement for above-mentioned status, a kind of coking exhaust treatment system is provided.
The technical solution adopted by the present invention: a kind of coking exhaust treatment system, the first order absorption list including handling hydrogen sulfide
Member, second level absorptive unit, moisture separator and desulfurization workshop section, and three-level absorptive unit, the Oil-gas Separation dress of processing benzene class
It sets, photocatalysis+low-temperature plasma integrating device, adsorption tower, level Four absorptive unit and crude benzol workshop section, in which:
The first order absorption unit is equipped with the first air inlet pipe, the first escape pipe and the first desulphurization channel, and the level-one is inhaled
The absorbing liquid for receiving unit is the first alkaline mixed solution, and connects the control dress for the pH concentration for maintaining first alkaline mixed solution
It sets；
The second level absorptive unit is connect with first escape pipe, and the second level absorptive unit is additionally provided with the second escape pipe
With the second desulphurization channel, the absorbing liquid of the second level absorptive unit is the second alkaline mixed solution, and maintains second alkalinity mixed
Close the control device of the pH concentration of liquid；
One end of the moisture separator is connect with second escape pipe, and the other end is equipped with third escape pipe, lower end
Equipped with third desulphurization channel；
The desulfurization workshop section by first, second, third desulphurization channel respectively with the first order absorption unit, second level
Absorptive unit is connected with moisture separator；
The three-level absorptive unit is connect with the third escape pipe, and one end is equipped with the 4th escape pipe, and lower end, which is equipped with, to be connected
First row benzene channel is connect, the absorbing liquid of the three-level absorptive unit is organic absorbent solvent；
For separating the organic absorbent solvent, one end is connect the oily-water seperating equipment with the 4th escape pipe,
The oily-water seperating equipment is additionally provided with the 5th escape pipe and second row benzene channel；
The crude benzol workshop section is separately connected the three-level absorptive unit and the grease point by first, second row's benzene channel
From device；
The photocatalysis+low-temperature plasma integrating device one end is connect with the 5th escape pipe, and the other end is equipped with the
Six escape pipes；
One end of the absorbing unit is connect with the 6th outlet pipe, and the other end is equipped with the 7th outlet pipe, the absorption
The adsorbate of unit is activated alumina；
One end of the level Four absorptive unit connects the 7th escape pipe, and the other end is equipped with the 8th connect with the external world and goes out
Tracheae, the absorbing liquid of the level Four absorptive unit are second alkaline mixed solution.
The beneficial effects of the present invention are: 1, greatly eliminate hydrogen sulfide and benezene material；2, sulphur simple substance can be obtained in technique
And benzene, avoid secondary pollution.
Detailed description of the invention
Attached drawing involved in description of the embodiment of the present invention is simply introduced, in order to in the embodiment of the present invention
Technical solution is become apparent from, is completely illustrated that attached drawing below is only for some embodiments of the present invention, not to limit
The system present invention, under the premise of without other creative works, it is clear that other accompanying drawings can be obtained according to these attached drawings.
Fig. 1 provides a kind of connection schematic diagram of coking exhaust treatment system for invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
As shown in Figure 1, the present invention provides a kind of coking exhaust treatment system, including first order absorption unit 1, second level absorb list
Member 2, moisture separator 3, three-level absorptive unit 4, gas and oil separating plant 5, photocatalysis+low-temperature plasma integrating device 6, absorption
Tower 7, level Four absorptive unit 8, desulfurization workshop section 9 and crude benzol workshop section 10.
First order absorption unit 1 is dynamic wave absorption tower, equipped with receive the first air inlet pipe of coking exhaust gas, the first escape pipe with
And the first desulphurization channel；It absorbed using the first alkaline mixed solution, separate the gas soluble easily in water such as hydrogen sulfide, ammonia in exhaust gas
Sulphion therein is simultaneously reduced into sulphur simple substance by body, while connecting control device to maintain the pH of the first alkaline mixed solution on 10 left sides
It is right.
It should be noted that first alkaline mixed solution is the mixed liquor of sodium thiosulfate and sodium hydroxide, wherein sulphur
The concentration of sodium thiosulfate is 2~10%.
Further, control device includes pH inductor and chemical tank and charge pump equipped with sodium thiosulfate.
Second level absorptive unit 2 is spray column, connect with the first escape pipe, and is equipped with the second escape pipe, and lower end is equipped with the
Two desulphurization channels；Second level absorptive unit 2 is further absorbed using the second alkaline mixed solution, is separated from the discharge of first order absorption unit 1
Gas, keep 1.5s~2s rate to be sprayed in second level absorptive unit 2, while using above-mentioned control device to maintain first
The pH of alkaline mixed solution is 10 or so.
Second alkaline mixed solution is sodium hydroxide solution.
Moisture separator 3 is used to dry the gas of the latter's discharge, and one end is connect with the second escape pipe, and the other end is equipped with
Third escape pipe, lower end are equipped with third desulphurization channel.
First order absorption unit 1, second level absorptive unit 2 and moisture separator 3 periodically discharge solution and send to desulfurization workshop section 9
Recycle elemental sulfur.
Three-level absorptive unit 4 is spray column, using the benzene in organic absorbent solvent absorption exhaust gas, phenolic substances, the upper end
It connects third escape pipe and is equipped with the 4th escape pipe, lower end is equipped with the first row benzene channel of connection crude benzol workshop section 10.
For separating organic absorbent solvent, one end is connect gas and oil separating plant 5 with the 4th escape pipe, and the other end is equipped with the
Five escape pipes, gas and oil separating plant 5 are additionally provided with the second row benzene channel of connection crude benzol workshop section 10.
It should be noted that three-level absorptive unit 4 and oily-water seperating equipment 5 connect crude benzol workshop section 10, solution is periodically discharged
Regeneration recycling benzene, prevents secondary pollution.
Photocatalysis+low-temperature plasma integrating device 6 is for further removing hydrogen sulfide, benzene and non-methane total hydrocarbons, one end
It is connect with the 5th escape pipe, the other end is equipped with the 6th escape pipe.
Absorbing unit 7 is used to adsorb the O that the pollutant escaped from the latter and photocatalysis unit generate3, one end and the
The connection of six outlet pipes, the other end are equipped with the 7th outlet pipe, and the adsorbate inside absorbing unit 7 is activated alumina, make O3
With pollutant in adsorbent and oxygenolysis is continued on surface, while making O3Concentration of emission is up to standard.
Level Four absorptive unit 8 is spray column, using surplus materials in the second alkaline mixed solution absorption exhaust gas, connection the 7th
Escape pipe, the other end are equipped with the 8th escape pipe connecting with the external world.The substance of the partial discharge is mainly alkaline mixed solution and sulphur
The reactive material of acid.
In addition, it is higher due to handling wherein hydrogen sulfide content, there is very strong neurotoxicity, once leakage is to operation around
Personnel there are life threat, it is long-range need to control avoids risk factor from existing, all devices in this system technique are by respectively going out
Tracheae airtight connection, gas are led by the air-introduced machine being arranged on the first escape pipe to the 7th escape pipe of adjacent stream oriented device is located at
Out, being in negative pressure state in the first escape pipe to the 7th escape pipe prevents gas backstreaming.
As shown in the table it is the exhaust treatment efficiency of this coking exhaust treatment system:
As shown above, first order absorption unit 1 absorbs 90% hydrogen sulfide, and second level absorptive unit 2 continues to absorb remaining
75% hydrogen sulfide, substantially reduces concentration of hydrogen sulfide, and third absorptive unit 3 and photocatalysis+low-temperature plasma integrating device 6 are inhaled
The benzene class for receiving 90%, substantially reduces concentration of benzene substances, while also substantially reduce the content of non-methane total hydrocarbons, single by absorption
7 continuation of member substantially reduces benezene material and level Four absorptive unit 8 and the remaining content of non-methane total hydrocarbons is greatly reduced, finally
The content of obtained hydrogen sulfide, benzene class and non-methane total hydrocarbons be respectively before 0.06%, 0.44% and 3.61%.
And the foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, it is all in spirit and original of the invention
Within then, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of coking exhaust treatment system, which is characterized in that including handling the first order absorption unit of hydrogen sulfide, second level absorbs list
Member, moisture separator and desulfurization workshop section, and three-level absorptive unit, the gas and oil separating plant, photocatalysis+low temperature of processing benzene class
Plasma integrating device, adsorption tower, level Four absorptive unit and crude benzol workshop section, in which:
The first order absorption unit is equipped with the first air inlet pipe, the first escape pipe and the first desulphurization channel, the first order absorption list
The absorbing liquid of member is the first alkaline mixed solution, and connects the control device for maintaining the pH concentration of first alkaline mixed solution；
The second level absorptive unit is connect with first escape pipe, and the second level absorptive unit is additionally provided with the second escape pipe and
Two desulphurization channels, the absorbing liquid of the second level absorptive unit is the second alkaline mixed solution, and maintains second alkaline mixed solution
PH concentration the control device；
One end of the moisture separator is connect with second escape pipe, and the other end is equipped with third escape pipe, and lower end is equipped with
Third desulphurization channel；
The desulfurization workshop section is absorbed with the first order absorption unit, second level respectively by first, second, third desulphurization channel
Unit is connected with moisture separator；
The three-level absorptive unit is connect with the third escape pipe, and one end is equipped with the 4th escape pipe, and lower end is equipped with connection the
One row's benzene channel, the absorbing liquid of the three-level absorptive unit are organic absorbent solvent；
For separating the organic absorbent solvent, one end is connect the oily-water seperating equipment with the 4th escape pipe, described
Oily-water seperating equipment is additionally provided with the 5th escape pipe and second row benzene channel；
The crude benzol workshop section is separately connected the three-level absorptive unit by first, second row's benzene channel and the water-oil separating fills
It sets；
The photocatalysis+low-temperature plasma integrating device one end is connect with the 5th escape pipe, and the other end is equipped with the 6th and goes out
Tracheae；
One end of the absorbing unit is connect with the 6th outlet pipe, and the other end is equipped with the 7th outlet pipe, the absorbing unit
Adsorbate be activated alumina；
One end of the level Four absorptive unit connects the 7th escape pipe, and the other end is equipped with the 8th outlet connecting with the external world
Pipe, the absorbing liquid of the level Four absorptive unit are second alkaline mixed solution.
2. a kind of coking exhaust treatment system according to claim 1, which is characterized in that the first order absorption unit is
Reeb absorption tower, the second level absorptive unit, three-level absorptive unit and level Four absorptive unit are spray column.
3. a kind of coking exhaust treatment system according to claim 1, which is characterized in that first alkaline mixed solution is
Sodium thiosulfate/sodium hydroxide mixed liquor, pH are 10 or so.
4. a kind of coking exhaust treatment system according to claim 1, which is characterized in that second alkaline mixed solution is
Sodium hydroxide solution, pH are 10 or so.
5. a kind of coking exhaust treatment system according to claim 1-4, which is characterized in that gas is by being located at
The air-introduced machine export being respectively provided on described first to the 7th outlet pipe of adjacent stream oriented device.
6. a kind of coking exhaust treatment system according to claim 5, which is characterized in that the described first to the 7th escape pipe
It is negative pressure in road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810964443.0A CN109012100B (en) | 2018-08-23 | 2018-08-23 | Coking waste gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810964443.0A CN109012100B (en) | 2018-08-23 | 2018-08-23 | Coking waste gas treatment system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109012100A true CN109012100A (en) | 2018-12-18 |
| CN109012100B CN109012100B (en) | 2021-02-26 |
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ID=64626890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810964443.0A Active CN109012100B (en) | 2018-08-23 | 2018-08-23 | Coking waste gas treatment system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1483038A (en) * | 1974-07-10 | 1977-08-17 | Metallgesellschaft Ag | Process for purifying gases produced by the gasification of solid or liquid fossil fuels |
| CN101671581A (en) * | 2009-09-28 | 2010-03-17 | 孙启玉 | Ammonia-soda coupled oven gas desulfurization process |
| CN102309913A (en) * | 2010-07-07 | 2012-01-11 | 中国石油化工股份有限公司 | Treatment method for stinky waste gas containing sulfides and hydrocarbons |
| CN108246073A (en) * | 2018-04-04 | 2018-07-06 | 江西铜鼓有色冶金化工有限责任公司 | The method and system that hydrogen sulfide tail gas is handled in a kind of tungsten smelting process |
| CN108325291A (en) * | 2018-04-26 | 2018-07-27 | 莱芜钢铁集团有限公司 | A kind of coking emission-control equipment |
-
2018
- 2018-08-23 CN CN201810964443.0A patent/CN109012100B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1483038A (en) * | 1974-07-10 | 1977-08-17 | Metallgesellschaft Ag | Process for purifying gases produced by the gasification of solid or liquid fossil fuels |
| CN101671581A (en) * | 2009-09-28 | 2010-03-17 | 孙启玉 | Ammonia-soda coupled oven gas desulfurization process |
| CN102309913A (en) * | 2010-07-07 | 2012-01-11 | 中国石油化工股份有限公司 | Treatment method for stinky waste gas containing sulfides and hydrocarbons |
| CN108246073A (en) * | 2018-04-04 | 2018-07-06 | 江西铜鼓有色冶金化工有限责任公司 | The method and system that hydrogen sulfide tail gas is handled in a kind of tungsten smelting process |
| CN108325291A (en) * | 2018-04-26 | 2018-07-27 | 莱芜钢铁集团有限公司 | A kind of coking emission-control equipment |
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| Publication number | Publication date |
|---|---|
| CN109012100B (en) | 2021-02-26 |
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