CN106672964A - Comprehensive pyrolysis gas collection and recycling process in active carbon production process - Google Patents
Comprehensive pyrolysis gas collection and recycling process in active carbon production process Download PDFInfo
- Publication number
- CN106672964A CN106672964A CN201611198552.3A CN201611198552A CN106672964A CN 106672964 A CN106672964 A CN 106672964A CN 201611198552 A CN201611198552 A CN 201611198552A CN 106672964 A CN106672964 A CN 106672964A
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- Prior art keywords
- tail gas
- activated carbon
- temperature
- active carbon
- production process
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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
-
- 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
Abstract
The invention belongs to the field of production of active carbon, and in particular relates to a comprehensive pyrolysis gas collection and recycling technology in an active carbon production process. The technology comprises the following steps: under an adiabatic condition, carrying out dust removal treatment on tail gas and separating out active carbon powder; inputting the treated tail gas into a temperature keeping device, wherein the temperature of the tail gas, which is output by the temperature keeping device, is 70 percent to 96 percent of the temperature of input tail gas; after heating the tail gas which is output by the temperature keeping device, directly adsorbing the tail gas by an active carbon production raw material. According to the comprehensive pyrolysis gas collection and recycling technology provided by the invention, the purification rate and the recycling rate of a chemical activating agent in the tail gas can be improved, and the active carbon production raw material with the adsorbed chemical activating agent can also be continually used for subsequent production of active carbon; the chemical activating agent is not wasted, and secondary pollution is also not caused.
Description
Technical field
The invention belongs to Activated Carbon Production field, and in particular to production process of activated carbon synthesis pyrolysis gas are collected and reclaimed
Using technique.
Background technology
Chemical method (phosphoric acid method and zinc chloride process) process for preparing activated carbon be by certain density chemical activating agent (phosphoric acid and
Zinc chloride) after solution mixes fully with wooden class raw material, internal heat type converter is conveyed into, and with high-temperature flue gas as thermal source, directly add
Thermal material, the tail gas produced in production process can contain a certain amount of chemical activating agent, directly discharge not only that contaminated air is simultaneously
Cause the waste of chemical activating agent；And the waste heat of tail gas also fails to rationally be utilized.
The content of the invention
The technical problem to be solved is to provide production process of activated carbon synthesis pyrolysis gas and collects and reclaim profit
With technique, the technique is comprised the following steps：
(1), under adiabatic conditions, tail gas is isolated into active carbon powder by dust removal process；
(2) the tail gas input temp holding meanss after, step 1 is processed, tail gas from temperature holding meanss export when temperature
Spend for 70~96% of exhaust temperature during input；
(3) after the tail gas that, exported by temperature holding meanss is heated, directly adsorbed by Activated Carbon Production raw material；
By percentage to the quality, the composition of the tail gas includes：Active carbon powder 3~6%, vapor 55~65%, cigarette
Gas 30~40%, chemical activating agent 2~4%.
Wherein, above-mentioned production process of activated carbon synthesis pyrolysis gas are collected and recycled in technique, described in step (1)
The initial temperature of tail gas is 140~260 DEG C.
Wherein, above-mentioned production process of activated carbon synthesis pyrolysis gas are collected and recycled in technique, described in step (1)
Chemical activating agent is at least one in phosphoric acid, hydrogen chloride and wood tar.
Wherein, above-mentioned production process of activated carbon synthesis pyrolysis gas are collected and recycled in technique, in step (3), institute
The temperature ascensional range after tail gas heating is stated for 28~35%.
Wherein, above-mentioned production process of activated carbon synthesis pyrolysis gas are collected and recycled in technique, in step (3), institute
Activated Carbon Production raw material is stated for Exocarpium cocois (Cocos nucifera L), wood flour, walnut shell, rice husk or furfural dregs.
Compared with prior art, the invention has the beneficial effects as follows：Present invention process by Activated Carbon Production raw material directly and tail
Gas is contacted, and can improve the purifying rate and the response rate of chemical activating agent in tail gas, and is adsorbed with the Activated Carbon Production of chemical active agent
Raw material can also continue to for the production of consequent activities charcoal, not result in chemical activating agent waste, more not result in secondary pollution.This
Invented technology is simple, operating cost is low, and promotional value is high.
Specific embodiment
The invention provides production process of activated carbon synthesis pyrolysis gas collect and recycle technique, the technique include with
Lower step：
(1), under adiabatic conditions, tail gas is isolated into active carbon powder by dust removal process；
(2) the tail gas input temp holding meanss after, step 1 is processed, tail gas from temperature holding meanss export when temperature
Spend for 70~96% of exhaust temperature during input；
(3) after the tail gas that, exported by temperature holding meanss is heated, directly adsorbed by Activated Carbon Production raw material；
By percentage to the quality, the composition of the tail gas includes：Active carbon powder 3~6%, vapor 55~65%, cigarette
Gas 30~40%, chemical activating agent 2~4%；The initial temperature of tail gas is 140~260 DEG C.
Wherein, above-mentioned production process of activated carbon synthesis pyrolysis gas are collected and recycled in technique, described in step (1)
Chemical activating agent is at least one in phosphoric acid, hydrogen chloride and wood tar.
Wherein, above-mentioned production process of activated carbon synthesis pyrolysis gas are collected and recycled in technique, in step (3), institute
The temperature ascensional range after tail gas heating is stated for 28~35%.
Wherein, above-mentioned production process of activated carbon synthesis pyrolysis gas are collected and recycled in technique, in step (3), institute
Activated Carbon Production raw material is stated for Exocarpium cocois (Cocos nucifera L), wood flour, walnut shell, rice husk or furfural dregs.
Present invention process directly contacts Activated Carbon Production raw material with tail gas, can improve the purification of chemical activating agent in tail gas
Rate and the response rate, and be adsorbed with the Activated Carbon Production raw material of chemical active agent and can also continue to for the production of consequent activities charcoal, no
Chemical activating agent can be caused to waste, more do not result in secondary pollution.Present invention process is simple, operating cost is low, and promotional value is high.
The present invention is further explained below in conjunction with specific embodiment and is illustrated, but and be not so limited the present invention guarantor
Shield scope.
Embodiment 1
Production process of activated carbon synthesis pyrolysis gas are collected and recycle technique, and the technique is comprised the following steps：
(1), under adiabatic conditions, tail gas is isolated into active carbon powder by dust removal process；By percentage to the quality,
The composition of the tail gas includes：Active carbon powder 3~6%, vapor 55~65%, flue gas 30~40%, chemical activating agent 2~
4%；The initial temperature of tail gas is 150 DEG C；Chemical activating agent is phosphoric acid；
(2) the tail gas input temp holding meanss after, step 1 is processed, tail gas from temperature holding meanss export when temperature
Spend for 105 DEG C of exhaust temperature during input；
(3) after the tail gas that, exported by temperature holding meanss is heated, the temperature of tail gas is upgraded to 140 DEG C, directly by activated carbon
Raw materials for production-wood flour is adsorbed.
Embodiment 2
Production process of activated carbon synthesis pyrolysis gas are collected and recycle technique, and the technique is comprised the following steps：
(1), under adiabatic conditions, tail gas is isolated into active carbon powder by dust removal process；By percentage to the quality,
The composition of the tail gas includes：Active carbon powder 3~6%, vapor 55~65%, flue gas 30~40%, chemical activating agent 2~
4%；The initial temperature of tail gas is 200 DEG C；Chemical activating agent is phosphoric acid and hydrogen chloride；
(2) the tail gas input temp holding meanss after, step 1 is processed, tail gas from temperature holding meanss export when temperature
Spend for 180 DEG C of exhaust temperature during input；
(3) after the tail gas that, exported by temperature holding meanss is heated, the temperature of tail gas is upgraded to 230 DEG C, directly by activated carbon
Raw materials for production-Exocarpium cocois (Cocos nucifera L) is adsorbed.
Embodiment 3
Production process of activated carbon synthesis pyrolysis gas are collected and recycle technique, and the technique is comprised the following steps：
(1), under adiabatic conditions, tail gas is isolated into active carbon powder by dust removal process；By percentage to the quality,
The composition of the tail gas includes：Active carbon powder 3~6%, vapor 55~65%, flue gas 30~40%, chemical activating agent 2~
4%；The initial temperature of tail gas is 220 DEG C；Chemical activating agent is hydrogen chloride and wood tar；
(2) the tail gas input temp holding meanss after, step 1 is processed, tail gas from temperature holding meanss export when temperature
Spend for 175 DEG C of exhaust temperature during input；
(3) after the tail gas that, exported by temperature holding meanss is heated, the temperature of tail gas is upgraded to 230 DEG C, directly by activated carbon
Raw materials for production-walnut shell is adsorbed.
Embodiment 4
Production process of activated carbon synthesis pyrolysis gas are collected and recycle technique, and the technique is comprised the following steps：
(1), under adiabatic conditions, tail gas is isolated into active carbon powder by dust removal process；By percentage to the quality,
The composition of the tail gas includes：Active carbon powder 3~6%, vapor 55~65%, flue gas 30~40%, chemical activating agent 2~
4%；The initial temperature of tail gas is 180 DEG C；Chemical activating agent is phosphoric acid, hydrogen chloride and wood tar；
(2) the tail gas input temp holding meanss after, step 1 is processed, tail gas from temperature holding meanss export when temperature
Spend for 170 DEG C of exhaust temperature during input；
(3) after the tail gas that, exported by temperature holding meanss is heated, the temperature of tail gas is upgraded to 220 DEG C, directly by activated carbon
Raw materials for production-walnut shell is adsorbed.
Technological means disclosed in the present invention program are not limited only to the technological means disclosed in above-mentioned embodiment, also include
The technical scheme being made up of above technical characteristic combination in any.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (5)
1. technique is collected and recycled to production process of activated carbon synthesis pyrolysis gas, it is characterised in that the technique includes following
Step：
(1), under adiabatic conditions, tail gas is isolated into active carbon powder by dust removal process；
(2) the tail gas input temp holding meanss after, step 1 is processed, tail gas from temperature holding meanss export when temperature be
The 70~96% of exhaust temperature during input；
(3) after the tail gas that, exported by temperature holding meanss is heated, directly adsorbed by Activated Carbon Production raw material；
By percentage to the quality, the composition of the tail gas includes：Active carbon powder 3~6%, vapor 55~65%, flue gas 30
~40%, chemical activating agent 2~4%.
2. according to claim 1 production process of activated carbon synthesis pyrolysis gas are collected and recycle technique, and its feature exists
In the initial temperature of tail gas described in step (1) is 140~260 DEG C.
3. according to claim 1 production process of activated carbon synthesis pyrolysis gas are collected and recycle technique, and its feature exists
In chemical activating agent described in step (1) is at least one in phosphoric acid, hydrogen chloride and wood tar.
4. according to claim 1 production process of activated carbon synthesis pyrolysis gas are collected and recycle technique, and its feature exists
In in step (3), the temperature ascensional range after the tail gas heating is 28~35%.
5. according to claim 1 production process of activated carbon synthesis pyrolysis gas are collected and recycle technique, and its feature exists
In in step (3), the Activated Carbon Production raw material is Exocarpium cocois (Cocos nucifera L), wood flour, walnut shell, rice husk or furfural dregs.
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| CN201611198552.3A CN106672964A (en) | 2016-12-22 | 2016-12-22 | Comprehensive pyrolysis gas collection and recycling process in active carbon production process |
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| CN201611198552.3A CN106672964A (en) | 2016-12-22 | 2016-12-22 | Comprehensive pyrolysis gas collection and recycling process in active carbon production process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109748277A (en) * | 2019-03-01 | 2019-05-14 | 河西学院 | The method for preparing high-adsorption active carbon using furfuraldehyde waste slag |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527201A (en) * | 2011-12-31 | 2012-07-04 | 福建省建瓯市芝星活性炭有限公司 | Technical device for recycling tail gas and residual heat during production of active carbon with phosphoric acid method |
| CN203259022U (en) * | 2013-03-29 | 2013-10-30 | 福建省荔元活性炭实业有限公司 | Tail gas heat recovering device of activated carbon rotary furnace |
| CN103599681A (en) * | 2013-12-09 | 2014-02-26 | 浙江富来森中竹科技有限公司 | Tail gas continuous processing device utilizing alkaline activation to prepare activated carbon and tail gas continuous processing method thereof |
| CN203768038U (en) * | 2014-04-03 | 2014-08-13 | 福建省荔元活性炭实业有限公司 | Active carbon production tail gas recycling system |
| CN105597484A (en) * | 2014-01-07 | 2016-05-25 | 上海康捷空气净化技术有限公司 | Purifying and recovering system of chemical method active carbon production tail gas |
-
2016
- 2016-12-22 CN CN201611198552.3A patent/CN106672964A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527201A (en) * | 2011-12-31 | 2012-07-04 | 福建省建瓯市芝星活性炭有限公司 | Technical device for recycling tail gas and residual heat during production of active carbon with phosphoric acid method |
| CN203259022U (en) * | 2013-03-29 | 2013-10-30 | 福建省荔元活性炭实业有限公司 | Tail gas heat recovering device of activated carbon rotary furnace |
| CN103599681A (en) * | 2013-12-09 | 2014-02-26 | 浙江富来森中竹科技有限公司 | Tail gas continuous processing device utilizing alkaline activation to prepare activated carbon and tail gas continuous processing method thereof |
| CN105597484A (en) * | 2014-01-07 | 2016-05-25 | 上海康捷空气净化技术有限公司 | Purifying and recovering system of chemical method active carbon production tail gas |
| CN203768038U (en) * | 2014-04-03 | 2014-08-13 | 福建省荔元活性炭实业有限公司 | Active carbon production tail gas recycling system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109748277A (en) * | 2019-03-01 | 2019-05-14 | 河西学院 | The method for preparing high-adsorption active carbon using furfuraldehyde waste slag |
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Application publication date: 20170517 |