CN111203070A - VOCs treatment system for carbon black production and treatment method thereof - Google Patents
VOCs treatment system for carbon black production and treatment method thereof Download PDFInfo
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- CN111203070A CN111203070A CN202010060331.XA CN202010060331A CN111203070A CN 111203070 A CN111203070 A CN 111203070A CN 202010060331 A CN202010060331 A CN 202010060331A CN 111203070 A CN111203070 A CN 111203070A
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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
- B01D53/14—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
- B01D53/1487—Removing organic compounds
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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
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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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
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- 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
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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Abstract
The invention discloses a VOCs treatment system for carbon black production and a treatment method thereof, wherein inert gas nitrogen is used for keeping pressure balance in a raw oil storage tank, air is extracted from the outside of the raw oil storage tank, various hydrocarbon vapors generated by the raw oil are extracted, washed, recovered, cooled and cooled, then part of production processes for carbon black production are fully utilized to burn the collected residual VOCs gas into a tail gas furnace for carbon black production at 800-950 ℃, so that heat for drying the carbon black is provided, and the generated waste gas is discharged after desulfurization and denitration treatment and reaches the standard. The invention treats the VOCs gas by combining two modes of washing and burning, and has high VOCs treatment efficiency, low process cost and safe process.
Description
Technical Field
The invention belongs to the technical field of carbon black, and particularly relates to a VOCs treatment system for carbon black production and a treatment method thereof.
Background
VOCs (volatile organic compounds) refers to organic compounds having a saturated vapor pressure of more than 133.32Pa at normal temperature and a boiling point of 50-260 ℃ below at normal pressure, or any organic solid or liquid capable of being volatilized at normal temperature and normal pressure. The harm of volatile VOCs is obvious, when the concentration of VOCs in the environment exceeds a certain concentration, people feel headache, nausea, vomit and limb weakness in a short time, and can twitch, coma and hypomnesis in severe cases. VOCs injure the liver, kidneys, brain and nervous system of a human.
At present, VOCs gas is treated by adopting an adsorption method, a washing method and the like in the industry, VOCs are treated in a selective adsorption mode, unit power consumption is required, an adsorbent is required to be continuously replaced, the type of the molecular sieve is selected by the adsorbent, the molecular sieve is required to be replaced periodically, and the cost of the molecular sieve is very high, such as patents: CN 110559805A adopts a large amount of molecular sieve, and needs continuous investment in treatment. If the washing oil washing mode is used, the washing oil is required to be used for washing regularly, the washing oil is required to be purchased for a long time for completion, and the cost is increased gradually for a long time; meanwhile, the use of the washing oil has great potential safety hazard.
Disclosure of Invention
In view of this, the present invention aims to provide a system and a method for treating VOCs produced by carbon black, the system and the method being mainly applied to the production process of carbon black, and the method comprising: the VOCs in the processes of raw oil entering a factory, raw material processing, raw oil storage, raw oil mixing, preparation and the like are efficiently processed. Can meet various indexes of environmental protection and simultaneously run safely and stably.
In order to achieve the purpose of the invention, the technical scheme is as follows:
the utility model provides a VOCs treatment system of carbon black production, includes raw oil storage tank, nitrogen seal device and exhaust treatment device, the nitrogen seal device includes air compressor machine, nitrogen making machine and the compressed nitrogen storage tank that connects gradually through the pipeline, the compressed nitrogen storage tank passes through the pipeline and is connected with the upper portion of raw oil storage tank, exhaust treatment device includes the VOCs mist draught fan, the gaseous washing device of VOCs, VOCs mist cooling device, carbon black tail gas stove fan, tail gas stove and the SOx/NOx control equipment that connect gradually through the pipeline, the import and the raw oil storage tank of VOCs mist draught fan are connected, a lower part basin is still connected to the gaseous washing device of VOCs.
Preferably, the raw material temperature in the raw oil storage tank is controlled at 70-100 ℃, so that the low-boiling organic compounds in the raw oil storage tank volatilize to form hydrocarbon vapor.
Preferably, the upper part of the raw oil storage tank is provided with a safety valve and a pressure gauge, the nitrogen from the compressed nitrogen storage tank and the gas flow to the VOCs mixed gas induced draft fan are kept balanced, and the pressure gauge displays and controls the pressure to be 0-minus 30 Kpa.
Preferably, the design preparation flow of the nitrogen making machine is 200-300M3And h, keeping the pressure in the compressed nitrogen storage tank at 0.7-0.8 Mpa.
Preferably, the VOCs gas washing device is a washing tower.
A VOCs treatment method for carbon black production comprises the following steps:
s1: preparation of Nitrogen
Compressing air by an air compressor, separating and compressing nitrogen in the air by a nitrogen making machine, and then conveying the nitrogen to a compressed nitrogen storage tank, so as to realize continuous nitrogen preparation in the process;
s2: nitrogen seal
The high-pressure nitrogen in the compressed nitrogen storage tank is sent to the upper part of the raw oil storage tank through a pipeline, the nitrogen is used as closed gas through valve control, the nitrogen is inert gas, the chemical property is stable, and the nitrogen cannot be mixed with VOCs gas to cause combustion and explosion;
s3: washing machine
VOCs gas in a raw oil storage tank, which is extracted by a VOCs mixed gas draught fan, is conveyed to a VOCs gas washing device for spraying and washing, water sprayed by the VOCs gas washing device is recycled through a lower water tank, and after the recycled washing water is used for a certain period, the washing water contains low-temperature cooling organic solution or crystals, and the washing water is collected and sent to a water treatment plant or tar processing recycling processing;
s4: cooling down
The mixed gas of the VOCs gas and the nitrogen gas washed by the VOCs gas washing device enters a VOCs mixed gas cooling device for cooling, and water carried in the mixed gas is separated;
s5: incineration of
Introducing the mixed gas cooled by the VOCs mixed gas cooling device into a tail gas furnace through a carbon black tail gas furnace fan for incineration, wherein the combustible part is used as fuel for combustion, and the heat of combustion is applied to carbon black drying to provide heat for carbon black drying;
s6: desulfurization and denitrification
And (4) introducing the waste gas generated in the tail gas furnace into desulfurization and denitrification equipment for desulfurization and denitration treatment, and emptying after the waste gas reaches the standard and is qualified.
The invention has the beneficial effects that: the method utilizes inert gas nitrogen to keep the pressure balance in the raw oil storage tank, simultaneously extracts air from the raw oil storage tank, extracts various hydrocarbon vapors generated by the raw oil, washes and recovers the hydrocarbon vapors, cools and cools the hydrocarbon vapors, and then fully utilizes part of the production process of carbon black production to burn the collected residual VOCs gas into a tail gas furnace for carbon black production at 800-950 ℃ so as to provide heat for drying the carbon black. The generated waste gas is discharged after reaching the standard after being subjected to desulfurization and denitration treatment. The nitrogen sealing device is arranged to avoid the leakage of the VOCs gas in the raw oil storage tank, the VOCs gas is treated by combining two modes of washing and burning, the treatment efficiency of the VOCs is high, the process cost is low, and the process is safe.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a VOCs treatment system for carbon black production according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
As shown in fig. 1, a VOCs treatment system of carbon black production, including raw oil storage tank 1, nitrogen seal device and exhaust-gas treatment device, the nitrogen seal device includes air compressor machine 2, nitrogen making machine 3 and compressed nitrogen storage tank 4 that connect gradually through the pipeline, compressed nitrogen storage tank 4 is connected through the pipeline and raw oil storage tank 1's upper portion, the exhaust-gas treatment device includes VOCs mist draught fan 5, VOCs gas washing device 6, VOCs mist cooling device 8, carbon black tail gas stove 10 fan 9, tail gas stove 10 and SOx/NOx control equipment 11 that connect gradually through the pipeline, VOCs mist draught fan 5's import and raw oil storage tank 1 are connected, VOCs gas washing device 6 still connects a lower basin 7.
The raw material temperature in the raw oil storage tank 1 is controlled at 70-100 ℃, so that organic compounds with low boiling points in the raw oil storage tank 1 volatilize to form hydrocarbon vapor.
And a safety valve and a pressure gauge are installed at the upper part of the raw oil storage tank 1, the nitrogen from the compressed nitrogen storage tank 4 and the gas flow to the VOCs mixed gas induced draft fan 5 are kept balanced, and the pressure gauge displays and controls the pressure to be 0-minus 30 Kpa.
The design preparation flow of the nitrogen making machine 3 is 200-300M3The pressure in the compressed nitrogen storage tank 4 is kept at 0.7-0.8Mpa, the carbon black production capacity is configured according to the unit annual production capacity of 20 ten thousand tons, the designed capacity per hour is 25 tons, the consumed raw material is 40 tons, and the consumption design storage tank is 34M3The raw materials and the auxiliary materials are used for one time according to the using principle, and the unit hour consumes 50M3. Design 200-300M3The production requirement of the/h nitrogen making equipment is completely met.
The VOCs gas washing device 6 is a washing tower.
Example 2
A VOCs treatment method for carbon black production comprises the following steps:
s1: preparation of Nitrogen
The air is compressed by an air compressor 2, nitrogen in the air is separated and compressed by a nitrogen making machine 3 and then is conveyed to a compressed nitrogen storage tank 4, and the continuous preparation of nitrogen is technically realized;
s2: nitrogen seal
The high-pressure nitrogen in the compressed nitrogen storage tank 4 is sent to the upper part of the raw oil storage tank 1 through a pipeline, the nitrogen is used as closed gas through valve control, the nitrogen is inert gas, the chemical property is stable, and the nitrogen cannot be mixed with VOCs gas to cause combustion and explosion;
s3: washing machine
VOCs gas in a raw oil storage tank 1 extracted by a VOCs mixed gas draught fan 5 is conveyed to a VOCs gas washing device 6 for spraying and washing, nitrogen introduced into the raw oil storage tank 1 and the gas flow of the VOCs mixed gas draught fan 5 are kept balanced, water sprayed by the VOCs gas washing device 6 is recycled through a lower water tank 7, and after the recycled washing water is used for a certain period, the washing water contains low-temperature cooling organic solution or crystals, and is collected and sent to a water treatment plant or tar processing for recycling processing;
s4: cooling down
The mixed gas of the VOCs gas and the nitrogen gas which is washed by the VOCs gas washing device 6 enters a VOCs mixed gas cooling device 8 for cooling, and water carried in the mixed gas is separated;
s5: incineration of
Introducing the mixed gas cooled by the VOCs mixed gas cooling device 8 into a tail gas furnace 10 through a fan 9 of the carbon black tail gas furnace 10 for burning, wherein the combustible part is used as fuel for burning, and the heat of burning is applied to carbon black drying to provide heat for carbon black drying;
s6: desulfurization and denitrification
And (3) introducing the waste gas generated in the tail gas furnace 10 into desulfurization and denitrification equipment 11 for desulfurization and denitration treatment, and emptying after the waste gas reaches the standard and is qualified.
On the basis of the carbon black production process, 40-60% of components in VOCs gas are recovered again, the VOCs gas is separated through washing and cooling, then the residual gas is treated through a combustion mode, the heat released by combustion is used for drying the carbon black, and the waste gas generated by combustion is subjected to desulfurization and denitration treatment and is discharged after reaching the standard.
Compared with the prior art, the VOCs treatment process adopting the scheme finishes one-time operation, the whole process only needs power consumption equipment, according to the scheme, the unit consumption power consumption is 160-240kw/h, and the unit consumption circulating water is 3m3And 7 days.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement, component separation or combination and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a VOCs treatment system of carbon black production which characterized in that: including raw oil storage tank, nitrogen seal device and exhaust-gas treatment device, the nitrogen seal device includes air compressor machine, nitrogen making machine and the compressed nitrogen storage tank that connects gradually through the pipeline, the compressed nitrogen storage tank passes through the pipeline and is connected with the upper portion of raw oil storage tank, the exhaust-gas treatment device includes the VOCs mist draught fan, the gaseous washing device of VOCs, VOCs mist cooling device, carbon black tail gas stove fan, tail gas stove and the SOx/NOx control equipment that connect gradually through the pipeline, the import and the raw oil storage tank of VOCs mist draught fan are connected, a lower part basin is still connected to the gaseous washing device of VOCs.
2. The system of claim 1 for remediation of carbon black-produced VOCs, wherein: the raw material temperature in the raw oil storage tank is controlled at 70-100 ℃, so that the low-boiling organic compounds in the raw oil storage tank volatilize to form hydrocarbon vapor.
3. The system of claim 1 for remediation of carbon black-produced VOCs, wherein: and a safety valve and a pressure gauge are installed at the upper part of the raw oil storage tank, the nitrogen from the compressed nitrogen storage tank and the gas flow to the VOCs mixed gas induced draft fan are kept balanced, and the pressure gauge displays and controls the pressure to be 0-minus 30 Kpa.
4. The system of claim 1 for remediation of carbon black-produced VOCs, wherein: the design preparation flow of the nitrogen making machine is 200-300M3And h, keeping the pressure in the compressed nitrogen storage tank at 0.7-0.8 Mpa.
5. A VOCs treatment method for carbon black production is characterized by comprising the following steps: the method comprises the following steps:
s1: preparation of Nitrogen
Compressing air by an air compressor, separating and compressing nitrogen in the air by a nitrogen making machine, and then conveying the nitrogen to a compressed nitrogen storage tank, so as to realize continuous nitrogen preparation in the process;
s2: nitrogen seal
The high-pressure nitrogen in the compressed nitrogen storage tank is sent to the upper part of the raw oil storage tank through a pipeline, the nitrogen is used as closed gas through valve control, the nitrogen is inert gas, the chemical property is stable, and the nitrogen cannot be mixed with VOCs gas to cause combustion and explosion;
s3: washing machine
VOCs gas in a raw oil storage tank, which is extracted by a VOCs mixed gas draught fan, is conveyed to a VOCs gas washing device for spraying and washing, water sprayed by the VOCs gas washing device is recycled through a lower water tank, and after the recycled washing water is used for a certain period, the washing water contains low-temperature cooling organic solution or crystals, and the washing water is collected and sent to a water treatment plant or tar processing recycling processing;
s4: cooling down
The mixed gas of the VOCs gas and the nitrogen gas washed by the VOCs gas washing device enters a VOCs mixed gas cooling device for cooling, and water carried in the mixed gas is separated;
s5: incineration of
Introducing the mixed gas cooled by the VOCs mixed gas cooling device into a tail gas furnace through a carbon black tail gas furnace fan for incineration, wherein the combustible part is used as fuel for combustion, and the heat of combustion is applied to carbon black drying to provide heat for carbon black drying;
s6: desulfurization and denitrification
And (4) introducing the waste gas generated in the tail gas furnace into desulfurization and denitrification equipment for desulfurization and denitration treatment, and emptying after the waste gas reaches the standard and is qualified.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603869A (en) * | 2020-06-04 | 2020-09-01 | 湖北东方化工有限公司 | Novel polynitrotoluene dust collection process |
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| CN208007770U (en) * | 2018-02-10 | 2018-10-26 | 济宁黑猫炭黑有限责任公司 | A kind of safety and environmental protection device for production of carbon black carbon black feed stock oil tank |
| CN209020180U (en) * | 2018-09-27 | 2019-06-25 | 河南东泰科技有限公司 | A kind of carbon black tail gas furnace denitrification apparatus |
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2020
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105597501A (en) * | 2016-01-04 | 2016-05-25 | 中橡集团炭黑工业研究设计院 | Method for exhaust gas desulfurization and denitration in carbon black production process |
| CN206457450U (en) * | 2017-01-23 | 2017-09-01 | 喀什德力克石油工程技术有限公司 | A kind of waste gas utilization system and carbon black production system |
| CN206778147U (en) * | 2017-04-20 | 2017-12-22 | 唐山黑猫炭黑有限责任公司 | A kind of carbon black oil storage-tank waste gas purifier |
| CN208007770U (en) * | 2018-02-10 | 2018-10-26 | 济宁黑猫炭黑有限责任公司 | A kind of safety and environmental protection device for production of carbon black carbon black feed stock oil tank |
| CN108636112A (en) * | 2018-06-12 | 2018-10-12 | 石宏扬 | Waste gas treatment process in a kind of production of carbon black |
| CN209020180U (en) * | 2018-09-27 | 2019-06-25 | 河南东泰科技有限公司 | A kind of carbon black tail gas furnace denitrification apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111603869A (en) * | 2020-06-04 | 2020-09-01 | 湖北东方化工有限公司 | Novel polynitrotoluene dust collection process |
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