CN100509647C - Chlorohydrocarbon waste liquid treating method - Google Patents
Chlorohydrocarbon waste liquid treating method Download PDFInfo
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- CN100509647C CN100509647C CNB2006100498578A CN200610049857A CN100509647C CN 100509647 C CN100509647 C CN 100509647C CN B2006100498578 A CNB2006100498578 A CN B2006100498578A CN 200610049857 A CN200610049857 A CN 200610049857A CN 100509647 C CN100509647 C CN 100509647C
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Abstract
The present invention relates to a chloro hydrocarbon waste liquid treatment method, which comprises the procedures of distillation, incineration, etc,. By adopting a neutralizer to neutralize and a decompress dry distillation technology, the gas phase of the waste liquid breaks away by an organic matter fashion which can be directly incinerated, while the solid phase of the waste liquid is landfilled in a solid waste landfill. The technology of the present invention is capable of effectively solve the problem of waste liquor recovery and discharge, and realizing the innocent treatment of waste liquid; besides, the technology is adapted to the construction of industrialization apparatus and solves the domestic bottleneck problem of freon substitute.
Description
Technical field
The present invention relates to a kind of treatment process of chloro-hydrocarbons waste liquid, the treatment process of waste liquid during particularly pentachloropropane, chlordene propane are produced.
Background technology
1,1,1,3,3-pentachloropropane (HCC-240), 1,1,1,3,3,3-chlordene propane (HCC-230) is the intermediate of producing freonll-11 substitute pentafluoropropane (HFC-245fa) and HFC-236fa (HFC-236fa), at rectifying HCC-230, can produce a certain amount of waste liquid in the HCC-240 process, main component is chloride hydro carbons, slant acidity, stronger stink is arranged, HCC-230, waste liquids such as HCC-240 have bigger hazardness to human body and environment, can not directly discharge, must handle, but owing to contain a certain amount of solid impurity in its waste liquid, rerum natura is thickness very, can not carry out conventional burning disposal again.
By the retrieval of patent and open source literature do not see that the patent of relevant HCC-230, HCC-240 liquid waste disposal aspect is declared, document etc., such waste liquid does not also have the good treatment method at present both at home and abroad, only introduced as U.S. Pat 5792893 component has been separated, cyclic utilization method is not mentioned the problem to can not round-robin heavy constituent material how handling.
At present to the most units of above-mentioned waste liquid mainly still the mode of direct landfill carry out, cause the waste of resource, the pollution of environment etc. thus.
Summary of the invention
In order to solve above-mentioned technical problem, the object of the invention is to provide a kind of can effectively solve the difficult problem that such waste liquid reclaims, discharges, realize the technology of waste liquid harmless treatment, this Technology maturation is applicable to the industrialized unit construction, solved the bottleneck problem of domestic freonll-11 substitute development, and the development of fluorine industry after will promoting.
In order to reach purpose of the present invention, adopted following technical scheme:
A kind of treatment process of chloro-hydrocarbons waste liquid adopts neutralizing agent neutralization, decompression destructive distillation curing process, can better solve the discharging difficult problem of waste liquid.This method is by the selection of neutralizing agent, and optimized the destructive distillation curing process parameter, technical matters route and preferable process control parameter have been determined, the waste liquid gas phase is mainly overflowed with the organism form, enter burning disposal, the solid phase refuse advances the direct landfill in solid waste landfill field, reaches recovery, the harmless treatment of resource.
The chloro-hydrocarbons waste liquid is after reclaiming useful component through distillation, and heavy constituent and neutralizing agent thorough mixing are regulated between pH to 6～7, in and waste liquid in acid inorganic substance, after carry out destructive distillation operation under little negative pressure, through destructive distillation decompose machine residue is arranged after, gas phase is burned, the solid phase landfill.
Described neutralizing agent can be alkali, alkaline earth metal oxide, carbide slag etc.
Alkali can be calcium hydroxide, and alkaline earth metal oxide can be a calcium oxide etc.
Calcium hydroxide (or carbide slag) and waste liquid amount are than between 1: 0.5～3.0; Preferably between 1: 2.0～2.5.
The destructive distillation absolute pressure is controlled between 0.09～0.095Mpa, and temperature control is no more than 260 ℃.
The present invention obtains good result through experimental examination, has that technology is simple, practical, characteristic of easy operation, and the chloro-hydrocarbons waste liquid accounts for 40～65% with what gas phase was overflowed after destructive distillation, directly discharge through burning after, and all the other solid phases are carried out landfill.Above-mentioned technology has solved the environmental protection difficult problem of chloro-hydrocarbons (HCC-230, HCC-240 etc.) waste liquid, has realized the harmless treatment of waste liquid.
Description of drawings
Fig. 1 is a process flow diagram of the present invention, the heavy constituent raffinate that comes out from rectifying tower (1) tower still enters reactor (2) and carries out sufficient hybrid reaction with neutralizing agent, after being adjusted to certain potential of hydrogen, carry out the destructive distillation operation (3) under little negative pressure, through the destructive distillation step, separating has machine residue, burns the direct innoxious landfill of solid components.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Getting 200ml HCC-230 waste liquid is added in the container that is equipped with mechanical stirrer, heating bath, reflux exchanger, add the 150g calcium oxide, and connect condensation acceptance and device for absorbing tail gas, stir post-heating, control pressure heats destructive distillation under 0.090Mpa, control retort process temperature is no more than 260 ℃, dryouies up to waste liquid, obtain effluent liquid 291g, the quantity of slag is 193g.
Effluent liquid directly enters burning, and slag carries out innoxious landfill.
With embodiment 1, pressure-controlling obtains effluent liquid 245g at 0.095Mpa, and the quantity of slag is 206g.
With embodiment 1, get 200ml HCC-240 waste liquid, pressure-controlling is at 0.092Mpa, and the 150g calcium oxide changes the 150g carbide slag into, obtains effluent liquid 194, and the quantity of slag is 287g.
Embodiment 4
With embodiment 1, pressure-controlling is at 0.090Mpa, and the 150g calcium oxide changes the 120g carbide slag into, obtains effluent liquid 203g, and the quantity of slag is 249g.
Claims (5)
1. the treatment process of a chloro-hydrocarbons waste liquid, it is characterized in that the chloro-hydrocarbons waste liquid is after reclaiming useful component through distillation, heavy constituent and neutralizing agent thorough mixing are regulated between pH to 6～7, in and the acid inorganic substance in the waste liquid, after carry out destructive distillation operation under little negative pressure, after the destructive distillation decomposition had machine residue, gas phase was burned, the solid phase landfill, and neutralizing agent and waste liquid amount are than between 1: 0.5～3.0, the retort process absolute pressure is controlled between 0.09～0.095Mpa, and temperature control is lower than 260 ℃.
2. the treatment process of a kind of chloro-hydrocarbons waste liquid as claimed in claim 1 is characterized in that neutralizing agent is alkali, alkaline earth metal oxide, carbide slag.
3. alkali as claimed in claim 2 is calcium hydroxide.
4. alkaline earth metal oxide as claimed in claim 2 is a calcium oxide.
5. the treatment process of a kind of chloro-hydrocarbons waste liquid as claimed in claim 1 is characterized in that described neutralizing agent and waste liquid amount are than between 1: 2.0～2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100498578A CN100509647C (en) | 2006-03-16 | 2006-03-16 | Chlorohydrocarbon waste liquid treating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100498578A CN100509647C (en) | 2006-03-16 | 2006-03-16 | Chlorohydrocarbon waste liquid treating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101037250A CN101037250A (en) | 2007-09-19 |
| CN100509647C true CN100509647C (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100498578A Expired - Fee Related CN100509647C (en) | 2006-03-16 | 2006-03-16 | Chlorohydrocarbon waste liquid treating method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395780B (en) * | 2019-07-16 | 2021-09-21 | 太仓中化环保化工有限公司 | Treatment method of high-phosphorus iron chlorine-containing organic waste liquid |
| CN111112290B (en) * | 2019-12-20 | 2021-06-04 | 浙江巨化技术中心有限公司 | Dechlorination method for chlorinated hydrocarbon waste |
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2006
- 2006-03-16 CN CNB2006100498578A patent/CN100509647C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 干馏废水(木醋液)治理初探. 孙忠玺.生物质化学工程，第2期. 1985 |
| 干馏废水(木醋液)治理初探. 孙忠玺.生物质化学工程，第2期. 1985 * |
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| CN101037250A (en) | 2007-09-19 |
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Assignee: Ningbo Juhua Chemical Industry Technology Co., Ltd. Assignor: Juhua Group Technology Center|Juhua Group Corporation Contract record no.: 2011330000388 Denomination of invention: Chlorohydrocarbon waste liquid treating method Granted publication date: 20090708 License type: Exclusive License Open date: 20070919 Record date: 20110503 |
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Owner name: JUHUA GROUP CORP. ZHEJIANG JINHUA NEW MATERIALS CO Free format text: FORMER OWNER: JUHUA GROUP CORP. Effective date: 20140709 |
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Effective date of registration: 20140709 Address after: Zhejiang province Quzhou City Kecheng District 324004 Patentee after: Technology Center of Juhua Group Patentee after: Juhua Group Corp. Patentee after: Zhejiang Jinhua New Materials Co.,Ltd. Address before: Zhejiang province Quzhou City Kecheng District 324004 Patentee before: Technology Center of Juhua Group Patentee before: Juhua Group Corp. |
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