CN1078213A - A kind of method of producing decoloration active carbon with non-caking coal - Google Patents
A kind of method of producing decoloration active carbon with non-caking coal Download PDFInfo
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- CN1078213A CN1078213A CN92103150A CN92103150A CN1078213A CN 1078213 A CN1078213 A CN 1078213A CN 92103150 A CN92103150 A CN 92103150A CN 92103150 A CN92103150 A CN 92103150A CN 1078213 A CN1078213 A CN 1078213A
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- active carbon
- producing
- caking coal
- decoloration active
- raw material
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- 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
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
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Abstract
A kind of method of producing decoloration active carbon with non-caking coal, its production process comprises: raw material is prepared; Material modification is handled; Activation; Aftertreatment.This method technology is simple, pollution-free, and product performance reach the standard of carbo lignius.This has filled up the blank that China's decoloration active carbon is produced with the technology that coal is produced decoloration active carbon for wood.
Description
The present invention relates to a kind of production method of gac, particularly a kind of method of producing decoloration active carbon with non-caking coal.
The raw material of producing decoloration active carbon or discoloring agent in the prior art generally adopts wood materials.Chinese patent on September 25th, 1991 disclosed a kind of " preparation method of solid decolorizer ", and (application number: 90104205.6), this method is to be that raw material makes discoloring agent through processes such as saccharification, carbonizations with dry, comminuted plants fibre material.
Chinese patent disclosed a kind of " production method of weakly caking coal columnar activated carbon " on June 1st, 1988, and (application number: 86107847), the characteristics of this method are to make binding agent without coal tar or coal-tar pitch, the preparative column shaped activated carbon.
Chinese patent on June 7th, 1989 disclosed a kind of " preparation process of active carbon ", and (application number: 88107767.4), this method is that to adopt noncaking coal be raw material, and granulation phase is arranged in the preparation process, in an embodiment raw material has been carried out the reduction ash and has handled.
Above-mentioned three kinds of methods and existing certain methods or prepare decoloration active carbon with wood materials, or with the general gac of coal production, its production method all has charing and two processes of activation basically, adopts deliming technology producing with coal to have in the activated carbon process.
Do not provide the method for producing decoloration active carbon with coal in the existing method, and production process is complicated.
The purpose of this invention is to provide a kind of is raw material with non-caking coal, is applicable to the gac of decolourings such as food, medicine, organic solvent by simpler method production.
Purpose of the present invention realizes by following proposal:
It is raw material that the present invention adopts non-caking coal, and production process mainly contains four-stage:
(1) preparation of raw material: with feed coal through broken, sieve into the certain granules shape, and carry out washing.
(2) raw material is carried out modification and handle,, change the physicochemical characteristic of raw material promptly by the method for pickling, charing.
(3) activation, the charcoal material of under 800-1000 ℃ of temperature, having handled through modification with steam activation.
(4) aftertreatment is carried out grinding to the charcoal material after the activation, and is made the powdery decolorizing charcoal through pickling.
The present invention selects for use non-caking coal to prepare the wider decoloration active carbon of range of application first, for wood, saves timber with coal, and technology stability is good, and alleviates environmental pollution, and the gac of producing with present method has unique absorption property.
Below provide embodiments of the invention, the present invention is described in more detail by this example.
Embodiment:
Select Lingwu, Ningxia non-caking coal for use, its feature is as follows: moisture content 12.5-14.87%, ash 6.38-10.59%, fugitive constituent 31.59%, sulfur-bearing 0.31-1.17%, phosphorous 0.007-0.02%, thermal value 6205-6949 kilocalorie/kilogram, 1010 ℃-1400 ℃ of grey molten points, its technological process is as follows:
1, raw material is prepared: pick up spoil in the coal, with the coal fragmentation, sieve into the particle of 2-8mm, wash method flush away part ash with water, make clean fine coal, its ash content is reduced to below 5%;
2, material modification is handled: the hydrochloric acid with concentration 2-8% steeped granular clean fine coal 2-6 hour, and with being steam heated to 60-100 ℃, wash repeatedly with clear water after the elimination acid solution, make pH value between 4-7, reduce to below 3% through raw material ash after the pickling, send into heat drying in the inherent few oxygen atmosphere of 150-600 ℃ of drying oven, charcoal material fugitive constituent is reduced to below 20%;
3, activation: the raw material after the above-mentioned processing is dropped in the Slapple activating furnace under 800-1000 ℃ of temperature, use steam activation, activated charcoal material afterwards reaches more than the 12ml the Yamamoto Methylene Blue ZF decolorizing ability;
4, aftertreatment: the charcoal material after the said process processing is worn into the powdered carbon that passes through 200 eye mesh screens more than 90% with pulverizer, use chlorohydric acid pickling and washing again, reduce wherein foreign matter content, promptly make the product of decolorizing and refinings such as being used for food, medicine.
The qualification rate of above-mentioned life method product is 94%.
Product, ature of coal 1 with this law preparation
#Charcoal and ature of coal 2
#Charcoal and Huzhou ZL-832 type charcoal and Jianyang, Fujian gac (being wood activated charcoal) compare, and it the results are shown in table 1:
Claims (6)
1, a kind of method of producing decoloration active carbon with non-caking coal, it is characterized in that adopting non-caking coal is raw material, and produces by following process:
(1) raw material is prepared;
(2) material modification is handled;
(3) activation;
(4) aftertreatment.
2, method of producing decoloration active carbon with non-caking coal according to claim 1 is characterized in that the above-mentioned raw materials set-up procedure is meant raw material crushing, sieves into sized granular, and the method that washes with water reduces ash.
3, method of producing decoloration active carbon with non-caking coal according to claim 1, the modification that it is characterized in that above-mentioned raw materials are handled and are meant raw material is carried out chemical treatment with acid.
4, method of producing decoloration active carbon with non-caking coal according to claim 1, it is physically activated to it is characterized in that above-mentioned reactivation process is meant with the high-temperature water vapor activatory.
5, method of producing decoloration active carbon with non-caking coal according to claim 1, it is characterized in that above-mentioned last handling process is meant carries out pickling to the gac after the activation, and makes necessarily required granularity.
6,, it is characterized in that above-mentioned to carry out chemical treatment with acid be to use hydrochloric acid according to claim 1 or 3 described methods of producing decoloration active carbon with non-caking coal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92103150A CN1078213A (en) | 1992-04-28 | 1992-04-28 | A kind of method of producing decoloration active carbon with non-caking coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92103150A CN1078213A (en) | 1992-04-28 | 1992-04-28 | A kind of method of producing decoloration active carbon with non-caking coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1078213A true CN1078213A (en) | 1993-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92103150A Pending CN1078213A (en) | 1992-04-28 | 1992-04-28 | A kind of method of producing decoloration active carbon with non-caking coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1078213A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969449A (en) * | 2016-06-30 | 2016-09-28 | 云南澜沧铅矿有限公司 | Refining production method for reducing ash in lignite |
| CN109502586A (en) * | 2018-12-29 | 2019-03-22 | 淮安弘瑞炭业科技有限公司 | A kind of processing technology of primary charcoal |
-
1992
- 1992-04-28 CN CN92103150A patent/CN1078213A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969449A (en) * | 2016-06-30 | 2016-09-28 | 云南澜沧铅矿有限公司 | Refining production method for reducing ash in lignite |
| CN109502586A (en) * | 2018-12-29 | 2019-03-22 | 淮安弘瑞炭业科技有限公司 | A kind of processing technology of primary charcoal |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |