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Method for treating waste water generated by washing of tert-butyl peroxybenzoate with weakly alkaline saline solution

A technology of tert-butyl peroxybenzoate and brine solution, which is applied in heating water/sewage treatment, peroxy compound preparation, chemical instruments and methods, etc. There is no reusable value, etc.

Active Publication Date: 2012-07-25
江苏强盛功能化学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no reuse treatment of the wastewater produced after washing with weak alkaline salts. It is generally believed that there is no reuse value in industrial production, and it is often discharged as waste liquid, and this discharged waste liquid mainly contains a large amount of weak alkaline salts. , and tert-butanol produced after the reduction of tert-butyl hydroperoxide, which further increases the load of three wastes treatment, which is extremely inconsistent with green production and environmental friendliness

Method used

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  • Method for treating waste water generated by washing of tert-butyl peroxybenzoate with weakly alkaline saline solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The present embodiment provides a kind of treatment method of the waste water that adopts 1.0wt% sodium carbonate solution washing tert-butyl peroxybenzoate to produce, specifically comprises the steps:

[0023] (1) the purity of 700kg is 98.7wt% tert-butyl peroxybenzoate and the mixture of the 1.0wt% sodium carbonate solution used for washing is introduced into the layered tank from the weakly alkaline brine washing kettle, the upper strata 489.6kg organic phase obtains tert-butyl peroxybenzoate finished product 486.7Kg (purity is 99.52wt%) after drying, lower floor 210.4kg water phase (being the said waste water of the present invention, containing 0.98wt% sodium carbonate, 0.21wt% tert-butyl peroxybenzoate) Butanol), enters the evaporator;

[0024] (2) In the evaporator, after the waste water is evaporated at 65°C for 4.5h, 208.53kg of distilled raffinate (containing 0.99wt% sodium carbonate and 0.025wt% tert-butanol) is obtained, which is directly introduced into th...

Embodiment 2

[0027] The present embodiment provides a kind of treatment method of the waste water that adopts 3.0wt% sodium bicarbonate solution washing tert-butyl peroxybenzoate to produce, specifically comprises the steps:

[0028] (1), the tert-butyl peroxybenzoate of 98.7wt% with the purity of 700kg and the mixture of the 3.0wt% sodium bicarbonate solution used for washing are introduced into the layered tank from the washing kettle, and the upper floor is 497.2kg Organic phase obtains tert-butyl peroxybenzoate finished product 495.9Kg (purity is 99.68wt%) after drying, and lower floor 202.8kg water phase (containing 2.97wt% sodium bicarbonate, 0.24wt% tert-butyl alcohol) enters evaporator; Evaporated at 75°C for 4.0h;

[0029] (2) In the evaporator, after the waste water is evaporated at 75°C for 4 hours, 200.89kg of distilled raffinate (containing 3.00wt% sodium bicarbonate and 0.043wt% tert-butanol) is obtained, which is directly introduced into the weak alkaline brine washing tank ...

Embodiment 3

[0032] The present embodiment provides a kind of treatment method of the waste water that adopts 5.0wt% potassium carbonate solution to wash tert-butyl peroxybenzoate to produce, specifically comprises the steps:

[0033] (1), the purity of 700kg is 98.7wt% tert-butyl peroxybenzoate and the mixture of the 5.0wt% potassium carbonate solution used for washing is introduced into the layered tank from the washing kettle, and the upper 499.7kg organic Obtain tert-butyl peroxybenzoate finished product 496.1Kg (purity is 99.71wt%) after phase is dried, and lower floor 200.3kg water phase (containing 4.96wt% potassium carbonate, 0.24wt% tert-butyl alcohol) enters evaporator;

[0034] (2), in the evaporating device, the waste water was evaporated at 85° C. for 3.5 hours to obtain 198.28 kg of distilled raffinate (containing 5.01wt% potassium carbonate and 0.027wt% tert-butanol), which was directly introduced into the weak alkaline brine washing kettle; In addition, 2.02kg of evaporated...

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Abstract

The invention relates to a method for treating waste water generated by washing tert-butyl peroxybenzoate with a weakly alkaline saline solution, which comprises the steps: recovering the waste water, and then recycling the waste water for washing tert-butyl peroxybenzoate, wherein the step of recovering the waste water comprises the following steps: (1) guiding a mixture of tert-butyl peroxybenzoate and the weakly alkaline saline solution into a delamination tank for delamination, drying the upper layer to obtain a tert-butyl peroxybenzoate finished product, and introducing the waste water at the lower layer to an evaporation device; and (2) evaporating the waste water for 1.5-4.5 hours in the evaporation device at the temperature of 65-100 DEG C to obtain evaporated liquor and evaporated residual liquor, wherein the evaporated residual liquor is further and circularly used for washing tert-butyl peroxybenzoate. When solution recycled by the method provided by the invention is used for washing tert-butyl peroxybenzoate again, the same or similar washing effect can be completely achieved, and therefore, the method avoids industrial wastewater discharge, is beneficial to environmental protection, also saves raw materials, and reduces production cost.

Description

technical field [0001] The present invention relates to a kind of treatment method of tert-butyl peroxybenzoate washing wastewater, in particular to the treatment method of wastewater produced when washing tert-butyl peroxybenzoate with weak alkaline saline solution. Background technique [0002] Tert-butyl peroxybenzoate, referred to as TBPB, its molecular formula is: C 11 h 14 o 3 , the molecular weight is 194.23, and the structural formula is as follows: [0003] [0004] As the most commonly used ester organic peroxide in industry, tert-butyl peroxybenzoate is widely used as a medium-temperature initiator for polymerization reactions such as polystyrene, polyethylene, and polyacrylic acid, as a curing agent for unsaturated polyester, and as a silicon Rubber vulcanizing agent. [0005] Use sulfuric acid or other acids as catalysts, hydrogen peroxide as oxidant, catalyze the oxidation of tert-butyl alcohol to prepare tert-butyl hydroperoxide, and then carry out with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C07C409/38C07C407/00
Inventor 应立应志耀曹俊锋
Owner 江苏强盛功能化学股份有限公司