CN107441901A - A kind of rubber production tail gas alkaline cleaning tower absorption technique - Google Patents
A kind of rubber production tail gas alkaline cleaning tower absorption technique Download PDFInfo
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- CN107441901A CN107441901A CN201710799324.XA CN201710799324A CN107441901A CN 107441901 A CN107441901 A CN 107441901A CN 201710799324 A CN201710799324 A CN 201710799324A CN 107441901 A CN107441901 A CN 107441901A
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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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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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
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
- B01D53/523—Mixtures of hydrogen sulfide and sulfur oxides
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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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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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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Abstract
The invention discloses a kind of rubber production tail gas alkaline cleaning tower absorption technique, comprise the following steps：S1, tail gas is passed through to caustic wash tower, and is passed through oxygen, while carry out cooling and recovery waste heat for the first time；S2, tail gas carry out alkali cleaning respectively through one-level alkali cleaning area and two level alkali cleaning area respectively；S3, the tail gas after alkali cleaning is carried out to cool for second, alkali lye and benzene condensate liquid flow to memory block, and periodically throw liquid to extraction section, and the upper organic phase after extraction section extracts is separated and recovered from, and lower floor's aqueous phase is delivered to one-level alkali cleaning area via water pump and recycled；Tail gas after S4, alkali cleaning carries out charcoal absorption, mixing and absorption and activated alumina absorption successively, then is emitted into air after calcium chloride is dried, and completes the absorption technique of tail gas.Absorption technique proposed by the present invention, to the good absorbing effect of rubber production tail gas, absorption efficiency is high, and environment-friendly, alkali lye usage amount is few, and energy resource consumption is few, and processing cost is low, and resource utilization is high, and process stabilizing, and fidelity factor is high.
Description
Technical field
The present invention relates to technical field of rubber production, more particularly to a kind of rubber production tail gas alkaline cleaning tower absorption technique.
Background technology
Rubber carries out classification according to raw material can be divided into natural rubber and the major class of synthetic rubber two, due to coming for synthetic rubber
Source is abundant, prepares the features such as low cost, superior performance, high flexibility ratio is widely used in agricultural, national defence, traffic and daily life
In.In recent years, as the increase of synthetic rubber articles demand, rubber production enterprise reduce for the increase of meet demand amount
Production cost, therefore the improvement project of rubber production technology is also emerged in an endless stream.During tail gas treatment process is rubber production
A mostly important technique, it mainly includes tail gas absorption technology and exhaust combustion technique, wherein tail gas absorption technology for
Whether environmental protection plays an important roll rubber production.Rubber in process of production can be along with hydrogen sulfide, sulfur dioxide, benzene, toluene
Deng the generation of pernicious gas and vapor and micelle, if carrying out processing not in time will be directly discharged in air, to environment
Impact.
At present, absorption processing, existing caustic wash tower pair mainly are carried out by caustic wash tower to non-organic thing in rubber plant
The non-organic thing tail gas in part has good absorption, but absorbs not fully, can also remain a part of tail gas, and alkali wash water
Dosage it is larger, and then processing cost is higher；And for organic matter, traditional caustic wash tower processing method will be restricted,
Therefore can use and be handled by the way of burning, but the mode energy resource consumption of burning is larger, and need catalyst aid in into
OK, it is time-consuming also longer, so efficiency is also preferable not to the utmost.Based on this, the present invention proposes a kind of rubber production tail gas efficiently, environmentally friendly
Caustic wash tower absorption technique.
The content of the invention
The invention aims to solve shortcoming present in prior art, and a kind of rubber production tail gas alkali proposed
Wash tower absorption technique.
A kind of rubber production tail gas alkaline cleaning tower absorption technique, comprises the following steps：
S1, tail gas cooling：Rubber production tail gas is passed through caustic wash tower, and oxygen is passed through into caustic wash tower, is carried out simultaneously
Cool for the first time, the temperature of tail gas is cooled to 150~170 DEG C, and waste heat recovery, completion cooling are operated；
S2, tail gas alkali cleaning：Tail gas after cooling enters one-level alkali cleaning area, carries out first time alkali lye spray, enters back into two
Level alkali cleaning area carries out second of alkali lye spray, completes alkali cleaning operation；
S3, the recovery of benzene and the recycling of alkali lye：Second of cooling processing is carried out to the tail gas after alkali cleaning, is cooled to
120~130 DEG C, the benzene in tail gas is condensed into liquid and flow to memory block in the lump with alkali lye, and memory block is periodically launched to extraction section again
Liquid is extracted, and lower floor's aqueous phase is expelled to recycle of alkali liquor area by lower mouth, and the recycle of alkali liquor area is provided with water pump, recycle of alkali liquor
The alkali lye in area is delivered to one-level alkali cleaning area by water pump and recycled, and upper organic phase is discharged by liquid outlet, is reclaimed；
S4, tail gas absorption：Tail gas after alkali cleaning enters charcoal absorption area, first time absorption is carried out, through activated carbon
The tail gas of adsorption zone absorption enters back into mixing and absorption area, carries out second and adsorbs, and the tail gas of blended adsorption zone absorption is again through work
Property alumina adsorption area, carry out third time absorption, air is then emitted into after calcium chloride is dried again, completes the absorption work of tail gas
Skill.
Preferably, the alkali lye in the two level alkali cleaning area is the mixture of inorganic base, concentrated ammonia liquor and water, the inorganic base, dense
The mass ratio of ammoniacal liquor and water is 28~32：12~15：64~86.
Preferably, the inorganic base is any one in sodium hydroxide or potassium hydroxide.
Preferably, the alkali lye in the two level alkali cleaning area is first preheated using preceding, and the temperature of preheating is 30~40 DEG C.
Preferably, the adsorbent in the mixing and absorption area is the mixture of activated carbon and zeolite, the activated carbon and boiling
The mass ratio of stone is 30~50：50~70.
Preferably, sodium chloride storage area is installed, and alkali wash water and benzene are deposited via sodium chloride directly over the extraction section
Put area and flow to extraction section, agitator is also equipped with extraction section.
Preferably, precipitation accumulation regions are provided with the memory block, the supernatant of the memory block is via memory block liquid outlet
Extraction section is flow to, the precipitation accumulation regions bottom is provided with sewage draining exit.
Preferably, the organic phase floss hole of the extraction section is also associated with distiller.
Absorption technique proposed by the present invention, to the good absorbing effect of rubber production tail gas, absorption efficiency is high, environment-friendly,
Alkali lye usage amount is few, and energy resource consumption is few, and processing cost is low, and resource utilization is high, and process stabilizing, and fidelity factor is high；Pass through recovery
Waste heat is recycled the heat carried in tail gas, improves the utilization rate of the energy, while is reduced after exhaust temperature is advantageous to
The recovery of the benzene of phase；The alkali lye that tail gas first passes through recovery carries out first time alkali cleaning, then carries out second of alkali with the alkali lye newly prepared
Wash, both ensured the thorough of alkali cleaning, while save alkali lye again, reduce cost absorption；Tail gas after alkali cleaning cools by second, tail
Benzene in gas is condensed into liquid and together enters the separation that extraction section carries out benzene with alkali lye, removes the tail gas after benzene and is lived successively again
Property charcoal absorption, mixing and absorption, activated alumina absorption and calcium chloride dry, the harmful substance remained in tail gas and moisture are entered
Row thoroughly removes, and significantly reduces the harmful substance contents after processing, and then improves the treatment effeciency of tail gas, and the absorption technique
Suitable for handle containing sulfur dioxide, hydrogen sulfide, benzene, toluene, vapor tail gas, and absorption technique is stable, good absorbing effect,
The benzene of absorption can also carry out recycling.
Embodiment
The present invention is made with reference to specific embodiment further to explain.
Embodiment one
A kind of rubber production tail gas alkaline cleaning tower absorption technique proposed by the present invention, comprises the following steps：
S1, tail gas cooling：Rubber production tail gas is passed through caustic wash tower, and oxygen is passed through into caustic wash tower, is carried out simultaneously
Cool for the first time, the temperature of tail gas is cooled to 160 DEG C, and waste heat recovery, completion cooling are operated；
S2, tail gas alkali cleaning：Tail gas after cooling enters one-level alkali cleaning area, carries out first time alkali lye spray, enters back into two
Level alkali cleaning area carries out second of alkali lye spray, completes alkali cleaning operation；
S3, the recovery of benzene and the recycling of alkali lye：Second of cooling processing is carried out to the tail gas after alkali cleaning, is cooled to
120 DEG C, the benzene in tail gas is condensed into liquid and flow to memory block in the lump with alkali lye, and is periodically extracted to extraction section liquid delivery
Take, lower floor's aqueous phase is expelled to recycle of alkali liquor area by lower mouth, and the recycle of alkali liquor area is provided with water pump, the alkali lye in recycle of alkali liquor area by
Water pump is delivered to one-level alkali cleaning area and recycled, and upper organic phase is discharged by liquid outlet, is reclaimed；
S4, tail gas absorption：Tail gas after alkali cleaning enters charcoal absorption area, first time absorption is carried out, through activated carbon
The tail gas of adsorption zone absorption enters back into mixing and absorption area, carries out second and adsorbs, and the tail gas of blended adsorption zone absorption is again through work
Property alumina adsorption area, carry out third time absorption, air is then emitted into after calcium chloride is dried again, completes the absorption work of tail gas
Skill.
In the present invention, the alkali lye in the two level alkali cleaning area is the mixture of sodium hydroxide, concentrated ammonia liquor and water, the hydroxide
The mass ratio of sodium, concentrated ammonia liquor and water is 30：13：77；The alkali lye in the two level alkali cleaning area is first preheated using preceding, preheating
Temperature is 35 DEG C；Adsorbent in the mixing and absorption area is the mixture of activated carbon and zeolite, the activated carbon and zeolite
Mass ratio is 40：60.
Embodiment two
A kind of rubber production tail gas alkaline cleaning tower absorption technique proposed by the present invention, comprises the following steps：
S1, tail gas cooling：Rubber production tail gas is passed through caustic wash tower, and oxygen is passed through into caustic wash tower, is carried out simultaneously
Cool for the first time, the temperature of tail gas is cooled to 170 DEG C, and waste heat recovery, completion cooling are operated；
S2, tail gas alkali cleaning：Tail gas after cooling enters one-level alkali cleaning area, carries out first time alkali lye spray, enters back into two
Level alkali cleaning area carries out second of alkali lye spray, completes alkali cleaning operation；
S3, the recovery of benzene and the recycling of alkali lye：Second of cooling processing is carried out to the tail gas after alkali cleaning, is cooled to
130 DEG C, the benzene in tail gas is condensed into liquid and flow to memory block in the lump with alkali lye, and precipitation accumulation regions, institute are provided with the memory block
The supernatant of memory block is stated periodically to extraction section liquid delivery and to be extracted from memory block liquid outlet, the extraction section just on
Side is provided with sodium chloride storage area, and alkali wash water and benzene flow to extraction section via sodium chloride storage area, are also equipped with extraction section
Agitator, extraction section lower floor aqueous phase are expelled to recycle of alkali liquor area by lower mouth, and the recycle of alkali liquor area is provided with water pump, recycle of alkali liquor
The alkali lye in area is delivered to one-level alkali cleaning area by water pump and recycled, and upper organic phase is discharged by liquid outlet, and enters distillation
Device is distilled, and is recycled；
S4, tail gas absorption：Tail gas after alkali cleaning enters charcoal absorption area, first time absorption is carried out, through activated carbon
The tail gas of adsorption zone absorption enters back into mixing and absorption area, carries out second and adsorbs, and the tail gas of blended adsorption zone absorption is again through work
Property alumina adsorption area, carry out third time absorption, air is then emitted into after calcium chloride is dried again, completes the absorption work of tail gas
Skill.
In the present invention, the alkali lye in the two level alkali cleaning area is the mixture of sodium hydroxide, concentrated ammonia liquor and water, the hydroxide
The mass ratio of sodium, concentrated ammonia liquor and water is 32：12：86；The alkali lye in the two level alkali cleaning area is first preheated using preceding, preheating
Temperature is 30 DEG C；Adsorbent in the mixing and absorption area is the mixture of activated carbon and zeolite, the activated carbon and zeolite
Mass ratio is 35：65.
The tail gas discharged in the absorption technique of embodiment one and embodiment two and traditional caustic wash tower absorption technique are discharged
Tail gas detected, and the testing result of embodiment one and embodiment two and the result of traditional absorption technique are compared
Compared with as a result as follows：
| Embodiment | One | Two |
| Benzene content | - 33.2% | - 32.5% |
| Content of sulfur dioxide | - 8.5% | - 8.6% |
| Hydrogen sulfide content | - 6.8% | - 7.1% |
Wherein "-" represents to reduce compared to the testing result of traditional caustic wash tower absorption technique.
Test result indicates that absorption of the absorption technique of embodiment one and embodiment two to benzene, sulfur dioxide and hydrogen sulfide
Conventional suction technique is superior to, and embodiment one is close with the detected value of embodiment two, shows absorption technique proposed by the present invention
It is high to the good absorbing effect of noxious material in tail gas, process stabilizing, fidelity factor.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (8)
1. a kind of rubber production tail gas alkaline cleaning tower absorption technique, it is characterised in that comprise the following steps：
S1, tail gas cooling：Rubber production tail gas is passed through caustic wash tower, and oxygen is passed through into caustic wash tower, while carries out first
Secondary cooling, the temperature of tail gas is cooled to 150~170 DEG C, and waste heat recovery, completion cooling are operated；
S2, tail gas alkali cleaning：Tail gas after cooling enters one-level alkali cleaning area, carries out first time alkali lye spray, enters back into two level alkali
Wash area and carry out second of alkali lye spray, complete alkali cleaning operation；
S3, the recovery of benzene and the recycling of alkali lye：Second of cooling processing is carried out to the tail gas after alkali cleaning, is cooled to 120
~130 DEG C, the benzene in tail gas is condensed into liquid and flow to memory block in the lump with alkali lye, and memory block is again periodically to extraction section liquid delivery
Extracted, lower floor's aqueous phase is expelled to recycle of alkali liquor area by lower mouth, and the recycle of alkali liquor area is provided with water pump, recycle of alkali liquor area
Alkali lye is delivered to one-level alkali cleaning area by water pump and recycled, and upper organic phase is discharged by liquid outlet, is reclaimed；
S4, tail gas absorption：Tail gas after alkali cleaning enters charcoal absorption area, first time absorption is carried out, through charcoal absorption
The tail gas of area's absorption enters back into mixing and absorption area, carries out second and adsorbs, and the tail gas of blended adsorption zone absorption is again through active oxygen
Change aluminium adsorption zone, carry out third time absorption, be then emitted into air after calcium chloride is dried again, complete the absorption technique of tail gas.
A kind of 2. rubber production tail gas alkaline cleaning tower absorption technique according to claim 1, it is characterised in that the two level alkali
The alkali lye for washing area is the mixture of inorganic base, concentrated ammonia liquor and water, and the mass ratio of the inorganic base, concentrated ammonia liquor and water is 28~32：
12~15：64~86.
A kind of 3. rubber production tail gas alkaline cleaning tower absorption technique according to claim 2, it is characterised in that the inorganic base
For any one in sodium hydroxide or potassium hydroxide.
A kind of 4. rubber production tail gas alkaline cleaning tower absorption technique according to claim 1, it is characterised in that the two level alkali
The alkali lye for washing area is first preheated using preceding, and the temperature of preheating is 30~40 DEG C.
5. a kind of rubber production tail gas alkaline cleaning tower absorption technique according to claim 1, it is characterised in that the mixing is inhaled
Adsorbent in attached area is activated carbon and the mixture of zeolite, and the mass ratio of the activated carbon and zeolite is 30~50：50~70.
A kind of 6. rubber production tail gas alkaline cleaning tower absorption technique according to claim 1, it is characterised in that the extraction section
Surface sodium chloride storage area is installed, and alkali wash water and benzene flow to extraction section via sodium chloride storage area, in extraction section also
Agitator is installed.
A kind of 7. rubber production tail gas alkaline cleaning tower absorption technique according to claim 1, it is characterised in that the memory block
Interior to be provided with precipitation accumulation regions, the supernatant of the memory block flow to extraction section, the precipitation accumulation regions via memory block liquid outlet
Bottom is provided with sewage draining exit.
A kind of 8. rubber production tail gas alkaline cleaning tower absorption technique according to claim 1, it is characterised in that the extraction section
Organic phase floss hole be also associated with distiller.
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| CN201710799324.XA CN107441901B (en) | 2017-09-07 | 2017-09-07 | Absorption process of alkaline washing tower for tail gas in rubber production |
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| CN201710799324.XA CN107441901B (en) | 2017-09-07 | 2017-09-07 | Absorption process of alkaline washing tower for tail gas in rubber production |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109432987A (en) * | 2018-12-29 | 2019-03-08 | 成都瀚江新材科技股份有限公司 | The processing method and processing device of exhaust gas in a kind of mineral wool production process |
| CN110523221A (en) * | 2018-05-23 | 2019-12-03 | 荆门市格林美新材料有限公司 | A kind of processing system and its application of electron wastes |
| CN111167286A (en) * | 2020-01-10 | 2020-05-19 | 安徽金禾实业股份有限公司 | Pressure swing adsorption decarbonization and vent gas desulfurization device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380295A (en) * | 2011-09-29 | 2012-03-21 | 牛晓璐 | Waste rubber cracking gas purifying process and equipment thereof |
| CN105749637A (en) * | 2016-04-07 | 2016-07-13 | 常州大学 | Comprehensive treatment system of waste gas in production of rubber tires |
| CN106563357A (en) * | 2016-10-19 | 2017-04-19 | 马鞍山钢铁股份有限公司 | Benzene separated water alkali dosing system and technology thereof |
-
2017
- 2017-09-07 CN CN201710799324.XA patent/CN107441901B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380295A (en) * | 2011-09-29 | 2012-03-21 | 牛晓璐 | Waste rubber cracking gas purifying process and equipment thereof |
| CN105749637A (en) * | 2016-04-07 | 2016-07-13 | 常州大学 | Comprehensive treatment system of waste gas in production of rubber tires |
| CN106563357A (en) * | 2016-10-19 | 2017-04-19 | 马鞍山钢铁股份有限公司 | Benzene separated water alkali dosing system and technology thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523221A (en) * | 2018-05-23 | 2019-12-03 | 荆门市格林美新材料有限公司 | A kind of processing system and its application of electron wastes |
| CN109432987A (en) * | 2018-12-29 | 2019-03-08 | 成都瀚江新材科技股份有限公司 | The processing method and processing device of exhaust gas in a kind of mineral wool production process |
| CN111167286A (en) * | 2020-01-10 | 2020-05-19 | 安徽金禾实业股份有限公司 | Pressure swing adsorption decarbonization and vent gas desulfurization device and method |
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