CN102515163A - Method for recycling phosphoric acid from tail gas produced in carbonization and activation of active carbon in phosphoric acid process - Google Patents
Method for recycling phosphoric acid from tail gas produced in carbonization and activation of active carbon in phosphoric acid process Download PDFInfo
- Publication number
- CN102515163A CN102515163A CN2011104311881A CN201110431188A CN102515163A CN 102515163 A CN102515163 A CN 102515163A CN 2011104311881 A CN2011104311881 A CN 2011104311881A CN 201110431188 A CN201110431188 A CN 201110431188A CN 102515163 A CN102515163 A CN 102515163A
- Authority
- CN
- China
- Prior art keywords
- phosphoric acid
- tail gas
- active carbon
- raw material
- gac
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
-
- 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
- B01D53/81—Solid phase processes
Abstract
The invention specifically relates to a method for recycling phosphoric acid from tail gas produced in carbonization and activation of active carbon in a phosphoric acid process, which belongs to the field of recycling of acids from tail gas of active carbon. The invention enables high efficiency and low cost in recovery of phosphoric acid from tail gas to be achieved and has substantial economic benefits and wide applicability. According to the method, tail gas containing phosphoric acid is recovered, uniformly mixed with an active carbon raw material and then subjected to drying, which enables tail gas recovery phosphoric acid liquid to adsorb on the active carbon raw material, and the obtained active carbon raw material is used as a raw material for active carbon prepared by using the phosphoric acid process. According to the invention, based on the porosity of the active carbon raw material, the raw material is used as a carrier of low concentration recovered acid for adsorption of phosphoric acid, thereby enabling the problem of difficult filtration of recovered liquid to be overcome; through drying of the active carbon raw material which has adsorbed the recovered liquid, the problem of difficult evaporative concentration of the recovered liquid is overcome, the concentration of phosphoric acid increases in the process of drying at the same time, and therefore, etching of phosphoric acid on carbon-containing substances is improved and quality of active carbon prepared in the phosphoric acid process is enhanced. The method has the advantages of simple operation, easy industrial popularization, low production cost and remarkable economic benefits.
Description
Technical field
The invention belongs to the tail gas recycle acid-utilising field of gac, more specifically relate to the method for the charing of a kind of phosphoric acid method gac, the utilization of activation tail gas recycle phosphoric acid.
Background technology
Gac is widely used in purification and the purification and the fields such as water treatment and gas sweetening of petroleum and petrochemical industry, environment protection, food-drink, medicine with its distinctive powerful adsorption function.The production technique of gac can be divided into two kinds of chemical method and physics methods.Problems such as the consumption of present domestic chemical method (phosphoric acid method) Activated Carbon Production ubiquity phosphoric acid is big, energy consumption is high, smoke pollution is serious and mechanization degree is low, personnel labor intensity is big.The most of spray mode that adopts of the tail gas that phosphoric acid method gac charing at present, activating process produce reclaims tail gas phosphoric acid.Recovering effect was remarkable when recovery liquid acid content concentration was low, and recovering effect was poor when recovery circulation fluid acid content concentration was high.Because recovery liquid powdered carbon, wood tar oil content height cause filtration difficulty, evaporation concentration difficulty.For tail gas phosphoric acid is reclaimed fully, it is long-pending big that recovery liquid acid concentration must be controlled recovering liq lower, that produce, causes evaporating the energy consumption height, and working cost height and manipulation strength are big.Indivedual enterprises adopt electric demist mode to reclaim tail gas phosphoric acid after recycling raising concentration through recovery liquid, though it is long-pending to have reduced recovering liq, power consumption is big, and equipment technology requires high, make the recycling of gac tail gas phosphoric acid receive certain restriction.
Summary of the invention
The method that the object of the present invention is to provide the charing of a kind of phosphoric acid method gac, activation tail gas recycle phosphoric acid to utilize realizes the efficient and cost degradation that tail gas phosphoric acid reclaims.Have remarkable economic efficiency, widely applicable.
Technical scheme of the present invention is following:
With the phosphoric acid tail gas recycle, mix with the gac starting material, through dry, the tail gas recycle phosphoric acid liquid is adsorbed on the gac starting material, as the raw material of preparation phosphoric acid method gac.
The phosphoric acid quality concentration of said tail gas recycle phosphoric acid liquid is 5%～30%.
The raw-material moisture content of said gac is 1%～30%.
Said tail gas recycle phosphoric acid liquid and the raw-material mass ratio of gac are 0.5-2.5:1.
Said exsiccant temperature is 120-600 ℃.Dried mixture moisture content is 5%～30%.
Remarkable advantage of the present invention:
1, utilizes the porousness of preparation gac starting material (routine wood chip), carry out phosphoric acid absorption, solved recovery liquid and be difficult to filtration problem as the carrier of lower concentration recovered acid.
2, through to adsorbing the raw-material drying of the gac that reclaims liquid, solve the problem that liquid is difficult to evaporation concentration that reclaims, phosphoric acid concentration increases in the drying process simultaneously, has strengthened the etching of phosphoric acid to carbon containing matter (routine wood chip), improves the quality of phosphoric acid method gac.
3, technological operation is simple, is easy to industrialization promotion.
4, the raw material of using the production gac is easy to obtain as absorption carrier, and production cost is low, and remarkable economic efficiency is arranged.
Embodiment
At the tail gas recycle acid moieties: the tail gas recycle acid concentration is controlled at phosphorus acid content 5-30%.
At mixing portion: tail gas recycle acid and porousness carbon containing matter mix stirring in the 0.5-2.5:1 ratio.
Drying nest: dried mixture moisture 5%～30%.
All the other steps that adopt this tail gas phosphoric acid to reclaim production process are all carried out according to the prior art of routine.
Below be embodiments of the invention, further specify the present invention, but the present invention is not limited only to this.
Embodiment 1
Contain 5% (per-cent is represented mass ratio, down together) tail gas recycle liquid of phosphoric acid and mix by mass ratio 2:1 with the wood chip of water cut 30%, the moisture of wood chip is 5% behind the air stream drying of 550 ℃ of hot blasts, and dry back wood chip phosphorus acid content is 15%.Dried wood chip mixes production phosphoric acid method gac as the raw material of phosphoric acid method gac with phosphoric acid solution by a certain percentage.
Embodiment 2
The tail gas recycle liquid that contains 15% phosphoric acid mixes by mass ratio 1:1 with the wood chip of water cut 1%, and the moisture of wood chip is 30% behind the air stream drying of 150 ℃ of hot blasts, and dry back wood chip phosphorus acid content is 13%.Dried wood chip mixes production phosphoric acid method gac as the raw material of phosphoric acid method gac with phosphoric acid solution by a certain percentage.
Embodiment 3
The tail gas recycle liquid that contains 30% phosphoric acid mixes by mass ratio 2.5:1 with the wood chip of water cut 5%, and the moisture of wood chip is 15% behind the air stream drying of 300 ℃ of hot blasts, and dry back wood chip phosphorus acid content is 27%.Dried wood chip mixes production phosphoric acid method gac as the raw material of phosphoric acid method gac with phosphoric acid solution by a certain percentage.
Claims (6)
1. phosphoric acid method gac charing, priming reaction tail gas recycle phosphoric acid utilize method; It is characterized in that: with the phosphoric acid tail gas recycle, mix, through dry with the gac starting material; The tail gas recycle phosphoric acid liquid is adsorbed on the gac starting material, as the raw material of preparation phosphoric acid method gac.
2. phosphoric acid method gac according to claim 1 charing, priming reaction tail gas recycle phosphoric acid utilize method, it is characterized in that: the phosphoric acid quality concentration of said tail gas recycle phosphoric acid liquid is 5%～30%.
3. phosphoric acid method gac according to claim 1 charing, priming reaction tail gas recycle phosphoric acid utilize method, it is characterized in that: the raw-material moisture content of said gac is 1%～30%.
4. phosphoric acid method gac according to claim 1 charing, priming reaction tail gas recycle phosphoric acid utilize method, it is characterized in that: said tail gas recycle phosphoric acid liquid and the raw-material mass ratio of gac are 0.5-2.5:1.
5. phosphoric acid method gac according to claim 1 charing, priming reaction tail gas recycle phosphoric acid utilize method, it is characterized in that: said exsiccant temperature is 120-600 ℃.
6. phosphoric acid method gac according to claim 1 charing, priming reaction tail gas recycle phosphoric acid utilize method, it is characterized in that: dried mixture moisture content is 5%～30%.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104311881A CN102515163A (en) | 2011-12-21 | 2011-12-21 | Method for recycling phosphoric acid from tail gas produced in carbonization and activation of active carbon in phosphoric acid process |
| PCT/CN2012/087103 WO2013091566A1 (en) | 2011-12-21 | 2012-12-21 | Method for utilizing exhaust gas phosphoric acid recovered from carbonization and activation reaction of phosphoric acid processed active carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104311881A CN102515163A (en) | 2011-12-21 | 2011-12-21 | Method for recycling phosphoric acid from tail gas produced in carbonization and activation of active carbon in phosphoric acid process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102515163A true CN102515163A (en) | 2012-06-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104311881A Pending CN102515163A (en) | 2011-12-21 | 2011-12-21 | Method for recycling phosphoric acid from tail gas produced in carbonization and activation of active carbon in phosphoric acid process |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102515163A (en) |
| WO (1) | WO2013091566A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091566A1 (en) * | 2011-12-21 | 2013-06-27 | 福建元力活性炭股份有限公司 | Method for utilizing exhaust gas phosphoric acid recovered from carbonization and activation reaction of phosphoric acid processed active carbon |
| CN104437062A (en) * | 2014-12-17 | 2015-03-25 | 福建元力活性炭股份有限公司 | Device and method for recovering phosphoric acid from phosphoric-acid-method activated carbon tail gas |
| 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 |
| CN109052394A (en) * | 2018-07-25 | 2018-12-21 | 贵州森环活性炭有限公司 | A kind of method that activated carbon of phosphoric acid method activation tail gas clean-up recycles |
| CN111533098A (en) * | 2020-06-10 | 2020-08-14 | 吉安龙净炭素科技有限公司 | Efficient purification method for recovering phosphoric acid in phosphoric acid method activated carbon production |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597506A (en) * | 2003-09-15 | 2005-03-23 | 傅太平 | Raw material recovery method from active carbon produced by chemical method |
| CN101543721A (en) * | 2008-03-26 | 2009-09-30 | 项缙农 | Method for purifying tail gas by using individual materials and raw material wooden meals for producing active carbon by chemical method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3864277A (en) * | 1970-05-15 | 1975-02-04 | North American Carbon | Hard granular activated carbon and preparation from a carbonaceous material a binder and an inorganic activating agent |
| US6060424A (en) * | 1995-09-28 | 2000-05-09 | Westvaco Corporation | High energy density carbons for use in double layer energy storage devices |
| JPH11349319A (en) * | 1998-06-04 | 1999-12-21 | Mitsubishi Chemical Corp | Production of activated carbon |
| CN101613101B (en) * | 2008-03-06 | 2012-02-01 | 项瑞芳 | Chemical method for preparing active carbon and simultaneously purifying self tail gas |
| CN102515163A (en) * | 2011-12-21 | 2012-06-27 | 福建元力活性炭股份有限公司 | Method for recycling phosphoric acid from tail gas produced in carbonization and activation of active carbon in phosphoric acid process |
-
2011
- 2011-12-21 CN CN2011104311881A patent/CN102515163A/en active Pending
-
2012
- 2012-12-21 WO PCT/CN2012/087103 patent/WO2013091566A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597506A (en) * | 2003-09-15 | 2005-03-23 | 傅太平 | Raw material recovery method from active carbon produced by chemical method |
| CN101543721A (en) * | 2008-03-26 | 2009-09-30 | 项缙农 | Method for purifying tail gas by using individual materials and raw material wooden meals for producing active carbon by chemical method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091566A1 (en) * | 2011-12-21 | 2013-06-27 | 福建元力活性炭股份有限公司 | Method for utilizing exhaust gas phosphoric acid recovered from carbonization and activation reaction of phosphoric acid processed active carbon |
| 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 |
| CN105597484B (en) * | 2014-01-07 | 2018-07-13 | 玉山县三清活性炭有限公司 | Active carbon by chemical method produces purification and the recovery system of tail gas |
| CN104437062A (en) * | 2014-12-17 | 2015-03-25 | 福建元力活性炭股份有限公司 | Device and method for recovering phosphoric acid from phosphoric-acid-method activated carbon tail gas |
| CN109052394A (en) * | 2018-07-25 | 2018-12-21 | 贵州森环活性炭有限公司 | A kind of method that activated carbon of phosphoric acid method activation tail gas clean-up recycles |
| CN111533098A (en) * | 2020-06-10 | 2020-08-14 | 吉安龙净炭素科技有限公司 | Efficient purification method for recovering phosphoric acid in phosphoric acid method activated carbon production |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013091566A1 (en) | 2013-06-27 |
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Application publication date: 20120627 |