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Method for treating organic waste liquid containing high content of phosphorus, iron and chlorine

A technology of organic waste liquid and treatment method, which is applied in the field of chemical production, can solve difficult problems such as treatment, achieve efficient recovery, improve utilization rate, and realize the effect of two-way benefits

Active Publication Date: 2019-11-01
太仓中化环保化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a new treatment method for phosphorus-containing, iron-containing, and chlorine-containing organic waste liquids, which can effectively solve the problem that such waste liquids are difficult to handle, and can realize Recycling of some of the resources; at the same time reducing the impact on the environment, improving the utilization rate of resources, bringing considerable economic benefits, and realizing the two-way benefits of environmental protection and economy

Method used

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  • Method for treating organic waste liquid containing high content of phosphorus, iron and chlorine

Examples

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Effect test

Embodiment 1

[0035] This example provides a treatment method for organic waste liquid. In the organic waste liquid, the total chlorine content is 65% (organic chlorine 55% (including tetrachlorethylene 4.5%, carbon tetrachloride 8.0%), inorganic chlorine 10%), Iron content 2.0%, phosphorus content 1.0%.

[0036] The processing method includes the following steps:

[0037] 1) Put 250.01g of the above organic waste liquid into the scraper evaporator, and adopt the vacuum distillation process, the material temperature is 125°C, the vacuum degree is 0.5KPa, and the organic chloride in the organic waste liquid is separated to obtain 166.03g of organic chloride ( 75.1% organic chlorine content) and 83.98g of the residual high boiler (i.e. the first residue) in the first kettle; among them, the separation rate of organic chloride is 66.41%, and the separation rate of organic chlorine is 90.53%;

[0038] The separated organic chlorides were separated by a vacuum distillation process, the temperat...

Embodiment 2

[0045] This example provides a treatment method for organic waste liquid. In the organic waste liquid, the total chlorine content is 63% (organic chlorine 52% (including tetrachlorethylene 4.0%, carbon tetrachloride 7.0%), inorganic chlorine 11%), The iron content is 2.2%, and the phosphorus content is 1.1%.

[0046] The processing method includes the following steps:

[0047] 1) Put 250.12g of the above organic waste liquid into the scraper evaporator, and adopt the vacuum distillation process, the material temperature is 128°C, the vacuum degree is 0.6KPa, and the organic chloride in the organic waste liquid is separated to obtain 164.37g of organic chloride ( 74.3% organic chlorine content) and 85.75g of residual high boilers in the first kettle (i.e. the first residue); among them, the separation rate of organic chloride is 65.71%, and the separation rate of organic chlorine is 93.89%;

[0048] The separated organic chlorides were separated by vacuum distillation process,...

Embodiment 3

[0055] This example provides a treatment method for organic waste liquid. In the organic waste liquid, the total chlorine content is 68% (organic chlorine 56% (including tetrachlorethylene 5.3%, carbon tetrachloride 8.9%), inorganic chlorine 12%), The iron content is 4.13%, and the phosphorus content is 1.0%.

[0056] The processing method includes the following steps:

[0057] 1) Put 249.95g of the above organic waste liquid into the scraper evaporator, adopt the vacuum distillation process, the material temperature is 130°C, the vacuum degree is 0.5KPa, and the organic chloride in the organic waste liquid is separated to obtain 166.87g of organic chloride ( 75.9% organic chlorine content) and 83.08g of residual high boilers in the first kettle (i.e. the first residue); among them, the separation rate of organic chlorides was 66.76%, and the separation rate of organic chlorines was 90.49%;

[0058] The separated organic chlorides were separated by vacuum distillation process...

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Abstract

The invention discloses a method for treating an organic waste liquid. The organic waste liquid contains phosphorus, iron and chlorine, and the method comprises the steps: (1) separating organic chloride in the organic waste liquid through vacuum distillation so as to obtain organic chloride and first residues; (2) performing vacuum distillation on the organic chloride, performing separation so asto obtain a crude product and second residues, sending the second residues to an incineration system, absorbing hydrogen chloride in the incineration tail gas so as to prepare hydrochloric acid, andperforming extraction on the first residues so as to obtain an iron-containing product and residual waste; and (3) performing purification and concentration on the iron-containing product so as to obtain an iron salt water treatment agent and hydrochloric acid, distilling the residual waste so as to obtain hydrogen chloride and waste residues, recovering the obtained hydrogen chloride for preparation of hydrochloric acid, and sending the waste residues to the incineration system. The problem of difficult treatment of the waste liquid is solved effectively, recycling of a part of the resourcesis achieved, the impact on the environment is reduced at the same time, the utilization rate of the resources is improved, and considerable economic benefits are brought, so that double benefits of environmental protection and economy are achieved.

Description

technical field [0001] The invention belongs to the field of chemical production, and in particular relates to the treatment of organic waste liquid produced in the production of 1,1,1,3,3-pentachloropropane, in particular to a treatment method for high phosphorus-containing, iron-containing, chlorine-containing organic waste liquid. Background technique [0002] 1,1,1,3,3-pentachloropropane (HCC-240fa) is an important intermediate for the preparation of 1,1,1,3,3-pentafluoropropane (HFC-245fa), and the ODP of HFC-245fa (consumption Ozone Potential) value is 0, no damage to the atmospheric ozone layer, low GWP (Global Warming Potential) value, non-flammable, low toxicity, and environmentally friendly, so it is widely used as a blowing agent in polyurethane industry, refrigeration Industry, construction and other fields, it can also be used to prepare refrigerants, heat transfer media and aerosol propellants, etc., and has broad market prospects. [0003] The current method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04F23G7/04C01G49/10C07C17/383C07C19/01C02F101/20C02F101/36C02F101/10C02F101/12
CPCC01G49/10C02F1/046C02F2101/105C02F2101/203C02F2101/36C02F2103/36C02F2301/08C07C17/383F23G7/04F23G2209/101C07C19/01
Inventor 马腾飞王睿闵律平秦炜戴伟
Owner 太仓中化环保化工有限公司