CN1597506A - Raw material recovery method from active carbon produced by chemical method - Google Patents
Raw material recovery method from active carbon produced by chemical method Download PDFInfo
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- CN1597506A CN1597506A CN 03159300 CN03159300A CN1597506A CN 1597506 A CN1597506 A CN 1597506A CN 03159300 CN03159300 CN 03159300 CN 03159300 A CN03159300 A CN 03159300A CN 1597506 A CN1597506 A CN 1597506A
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- raw material
- phosphoric acid
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- gac
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Abstract
A process for recovering phosphoric acid and zinc chloride in the chemical production of activated carbon by use of phenolic glass includes such steps as preparing phenolic glass from phenolic resin and glass fibres, making washing tower with said phenolic glass, spreading said phenolic glass in two circulating pools to form their lining layers, introducing the waste gas of rotary kiln to absorption tower to recover diluted phosphoric acid, depositing while cooling, returning absorbing liquid back to absorption tower, separating dregs from liquid, introducing the liquid to circulating pool, washing the primary cleaned gas in washing tower, depositing the dreg liquid, separating washing liquid from acidic liquid, returning the washing liquid back to washing tower, and introducing the acidic liquid to another circulating pool.
Description
(1) technical field
The present invention relates to the method that a kind of industrial gaseous waste is recycled, especially utilize phenolic aldehyde glass in active carbon by chemical method is produced, to reclaim the method for phosphoric acid and zinc chloride.
(2) background technology
Usually, tankage-wood chip after the wooden processing is the primary starting material of Activated Carbon Production, select for use the chemical method of phosphoric acid, zinc chloride can use low-temperature carbonization, phosphoric acid has dehydration and oxygenizement to material, make the low-temperature material charing and carry out oxidation, every materials consumption is low, cost is low, effect is better, especially the effective way of mountain development characteristic industry.But a large amount of high-density phosphorus acid that emitted in active carbon by chemical method production are the waste gas of representative, cause serious harm to surrounding environment, especially phosphoric acid, zinc chloride activation method are even more serious, are about 30000～86000m according to 1 ton of waste gas that gac produced of the every production of measuring and calculating
3/ h.To this, traditional terms of settlement is a WATER-WASHING METHOD, but forms corresponding acid seriously corrosion pipeline and equipment because water absorbs the back, adds that raw material phosphoric acid can't reclaim, and wastes resource.
(3) summary of the invention
The object of the present invention is to provide a kind of method that in active carbon by chemical method is produced, reclaims phosphoric acid and zinc chloride.
Another object of the present invention is to eliminate the environmental pollution that is caused in active carbon by chemical method production.
The present invention adopts phenolic aldehyde glass to carry out modification, makes it anti-160～250 ℃ of high temperature and acid and alkali-resistance, reaches to reclaim corresponding raw material phosphoric acid and zinc chloride earlier, and two purposes up to standard are controlled with neutralizing treatment neutral one in the back.
Processing step of the present invention is:
1, at the rotary kiln waste gas outlet phosphoric acid recovery tower is set, phosphoric acid recovery tower material is selected phenolic fiberglass reinforced plastics for use;
2, the diluted acid of Hui Shouing is through at least 1 grade of acid solution precipitation refrigeration cycle pond precipitation cooling, and acid solution precipitates refrigeration cycle pond liner phenolic fiberglass reinforced plastics layer;
3, the absorption liquid of acid solution precipitation refrigeration cycle pond gained is sent the phosphoric acid recovery tower back to through Phosphoric Acid Circulating Pump, reaches the absorption liquid of setting concentration and send production plant;
4, the lime-ash of acid solution precipitation refrigeration cycle pond gained enters mummifying pool, and the pulp water of mummifying pool is delivered to acid solution precipitation refrigeration cycle pond;
5, clean through the first purification pneumatic transmission cleaning tower of phosphoric acid recovery tower, the cleaning tower material is selected phenolic fiberglass reinforced plastics for use;
6, the purified gas qualified discharge after cleaning tower is cleaned;
7, the pulp water of cleaning tower is through at least 1 grade of scavenging solution precipitation circulatory pool precipitation, and scavenging solution precipitates circulatory pool liner phenolic fiberglass reinforced plastics layer;
8, the scavenging solution of scavenging solution precipitation circulatory pool gained is through clean cycle pumped back cleaning tower;
9, the qualified discharge liquid discharging of scavenging solution precipitation circulatory pool gained.
Said phosphoric acid recovery tower band atomising head.
Its material of said cleaning tower is a phenolic fiberglass reinforced plastics.
Said scavenging solution is preferably liming, and its concentration can select 5%～15% for use.
Add scavenging solution in said clean cycle pump inlet, scavenging solution can adopt liming, and its concentration can select 5%～15% for use.
The present invention selects for use the resol of acid and alkali-resistance to carry out the dosing modification, make modified phenolic resins, add glass fibre simultaneously, form high-strength corrosion-resisting, effective ingredient phosphoric acid in the waste gas that the phenolic fiberglass reinforced plastics of high temperature resistant (160～250 ℃) produces producing active carbon by phosphoric acid method technology etc. reclaims its rate of recovery 〉=80%.And adopt liming its residual exhaust to be neutralized qualified discharge.Its key technical indexes reaches:
1), off gas treatment amount: 6856m
3/ h;
2), dust content in stack gas:＜300mg/m
3
3) P in the waste gas
20
5Concentration: 172.15mg/m
3
4), spent air temperture: about 250 ℃;
5), discharge index GB 16297-1996 " atmosphere pollutants emission standards " secondary standard that is up to state standards behind the waste gas pollution control and treatment.
Compare with existing WATER-WASHING METHOD and employing alkaline matter absorption process, the present invention is in particular mountain area exploitation efficient resource, and preserving the ecological environment provides a kind of highly effective method.
(4) description of drawings
Fig. 1 is the process flow diagram of the embodiment of the invention.
Fig. 2 is the structural representation of the phosphoric acid recovery tower of the embodiment of the invention.
(5) embodiment
Following examples will the present invention is further illustrated in conjunction with the accompanying drawings.
As seen from Figure 1, establish phosphoric acid recovery tower A2 (referring to Fig. 2) at the waste gas outlet of rotary kiln A1, recovery tower is selected the phenolic fiberglass reinforced plastics material for use.The diluted acid that recovery tower reclaims precipitates cooling through 3 grades of acid solution precipitation refrigeration cycle pond A31, A32, A33, acid solution precipitation refrigeration cycle pond A31～A33 liner phenolic fiberglass reinforced plastics layer.The absorption liquid of acid solution precipitation refrigeration cycle pond gained is sent phosphoric acid recovery tower A2 back to through Phosphoric Acid Circulating Pump A4, reaches the certain density production plant A5 that send, and changes diluted acid again.The lime-ash of acid solution precipitation refrigeration cycle pond gained enters mummifying pool A6, and the pulp water of mummifying pool is sent acid solution precipitation refrigeration cycle pond A31 back to.First purification pneumatic transmission cleaning tower B7 through phosphoric acid recovery tower A2 cleans, and the material of cleaning tower B7 is selected phenolic fiberglass reinforced plastics for use.Purified gas after cleaning is through qualified discharges such as induced draft fan B8, and pulp water send 3 grades of scavenging solution precipitation circulatory pool B91, B92, B93 precipitation, scavenging solution precipitation circulatory pool B91～B93 liner phenolic fiberglass reinforced plastics layer.Scavenging solution after the clarification of scavenging solution precipitation circulatory pool precipitation returns cleaning tower B7 through corrosion-resistant clean cycle pump B10 again, and scavenging solution selects for use concentration to be about 10% liming.The qualified discharge liquid of scavenging solution precipitation circulatory pool gained directly discharges.PH=7～8 with the cleaning tower draining on the technology are as the criterion.
In Fig. 2, phosphoric acid recovery tower tower body is divided into top tower body 1, middle part tower body 3 and bottom tower body 9.The phosphoric acid absorption tower is equipped with clog-free type atomising head of advanced ceramic and annex thereof, forms the atomizing assembly 2 on phosphoric acid absorption tower.Be provided with sieve plate 4 in middle part tower body 3 chambeies, at tower body peripheral hardware nipple 5,7,8, the junction manages blue 6.Tower body, sieve plate, nipple and flange all adopt phenolic fiberglass reinforced plastics.In addition, clean gas outlet a is located at the top of top tower body 1, and water-in b1, b2 are located at middle part tower body 3, and visor e1, e2 are located at respectively on the tower body 3 of middle part.Exhaust gas inlet f is located at bottom tower body 9 middle parts, and absorption liquid outlet g is located at bottom tower body 9 bottoms.
Claims (8)
1, chemical method is produced the raw material recovery method of gac, it is characterized in that its processing step is:
1), at the rotary kiln waste gas outlet phosphoric acid recovery tower is set, phosphoric acid recovery tower material is selected phenolic fiberglass reinforced plastics for use;
2), the diluted acid that reclaims cools off acid solution precipitation refrigeration cycle pond liner phenolic fiberglass reinforced plastics layer through at least 1 grade of acid solution precipitation refrigeration cycle pond precipitation;
3), the absorption liquid of acid solution precipitation refrigeration cycle pond gained sends the phosphoric acid recovery tower back to through Phosphoric Acid Circulating Pump, reach the absorption liquid of setting concentration and send production plant;
4), the lime-ash of acid solution precipitation refrigeration cycle pond gained enters mummifying pool, the pulp water of mummifying pool is delivered to acid solution precipitation refrigeration cycle pond;
5), clean through the first purification pneumatic transmission cleaning tower of phosphoric acid recovery tower, the cleaning tower material is selected phenolic fiberglass reinforced plastics for use;
6), the purified gas qualified discharge after cleaning tower is cleaned;
7), the pulp water of cleaning tower precipitates scavenging solution precipitation circulatory pool liner phenolic fiberglass reinforced plastics layer through at least 1 grade of scavenging solution precipitation circulatory pool;
8), the scavenging solution of scavenging solution precipitation circulatory pool gained is through clean cycle pumped back cleaning tower;
9), the qualified discharge liquid discharging of scavenging solution precipitation circulatory pool gained.
2, chemical method as claimed in claim 1 is produced the raw material recovery method of gac, it is characterized in that said phosphoric acid recovery tower band atomising head.
3, chemical method as claimed in claim 1 is produced the raw material recovery method of gac, it is characterized in that its material of said cleaning tower is a phenolic fiberglass reinforced plastics.
4, chemical method as claimed in claim 1 is produced the raw material recovery method of gac, it is characterized in that said scavenging solution is a liming.
5, chemical method as claimed in claim 4 is produced the raw material recovery method of gac, it is characterized in that said liming concentration selects 5%～15% for use.
6, chemical method as claimed in claim 1 is produced the raw material recovery method of gac, it is characterized in that adding scavenging solution in said clean cycle pump inlet.
7, chemical method as claimed in claim 1 is produced the raw material recovery method of gac, it is characterized in that scavenging solution can adopt liming.
8, chemical method as claimed in claim 7 is produced the raw material recovery method of gac, it is characterized in that liming concentration can select 5%～15% for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03159300 CN1248961C (en) | 2003-09-15 | 2003-09-15 | Raw material recovery method from active carbon produced by chemical method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03159300 CN1248961C (en) | 2003-09-15 | 2003-09-15 | Raw material recovery method from active carbon produced by chemical method |
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| Publication Number | Publication Date |
|---|---|
| CN1597506A true CN1597506A (en) | 2005-03-23 |
| CN1248961C CN1248961C (en) | 2006-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03159300 Expired - Fee Related CN1248961C (en) | 2003-09-15 | 2003-09-15 | Raw material recovery method from active carbon produced by chemical method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486461B (en) * | 2009-02-17 | 2011-01-26 | 福建元力活性炭股份有限公司 | Novel acid recovery process for active 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 |
| CN103896267A (en) * | 2012-12-27 | 2014-07-02 | 福建大青实业有限公司 | Processing technology of shell carrier activated carbon |
| CN101918308B (en) * | 2006-10-09 | 2014-09-24 | 英美烟草(投资)有限公司 | Carbonising and/or activating carbonaceous material |
| CN106310875A (en) * | 2015-07-01 | 2017-01-11 | 启东久星化工有限公司 | System for separating organic matter from mixture of hydrogen chloride and organic matter |
| CN107381619A (en) * | 2017-09-14 | 2017-11-24 | 江苏科力特环保科技有限公司 | The recovery process of zinc chloride in a kind of Activated Carbon Production waste liquid |
| 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 |
-
2003
- 2003-09-15 CN CN 03159300 patent/CN1248961C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101918308B (en) * | 2006-10-09 | 2014-09-24 | 英美烟草(投资)有限公司 | Carbonising and/or activating carbonaceous material |
| CN101613101B (en) * | 2008-03-06 | 2012-02-01 | 项瑞芳 | Chemical method for preparing active carbon and simultaneously purifying self tail gas |
| CN101486461B (en) * | 2009-02-17 | 2011-01-26 | 福建元力活性炭股份有限公司 | Novel acid recovery process for active carbon |
| 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 |
| 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 |
| CN103896267A (en) * | 2012-12-27 | 2014-07-02 | 福建大青实业有限公司 | Processing technology of shell carrier activated carbon |
| CN106310875A (en) * | 2015-07-01 | 2017-01-11 | 启东久星化工有限公司 | System for separating organic matter from mixture of hydrogen chloride and organic matter |
| CN107381619A (en) * | 2017-09-14 | 2017-11-24 | 江苏科力特环保科技有限公司 | The recovery process of zinc chloride in a kind of Activated Carbon Production waste liquid |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1248961C (en) | 2006-04-05 |
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