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Method for recovering tert-butylamine from rubber accelerator TBBS wastewater

A technology of rubber accelerator and waste water recycling, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problem that solid waste cannot be effectively solved, the processing equipment occupies a large area, and it is difficult to operate stably for a long time. and other problems, to achieve the effect of reducing water treatment costs, low treatment costs, and solving large equipment investment

Inactive Publication Date: 2021-05-07
KEMAI CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, looking at many treatment schemes, although the existing schemes have solved the problem of wastewater discharge, they still cannot get out of the way. The treatment equipment occupies a large area and the treatment cost is high. to effectively solve problems, etc.

Method used

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1: This embodiment provides a kind of method for processing rubber accelerator waste water, and described method comprises the steps:

[0034] (1) After the rubber accelerator TBBS wastewater (COD>20000mg / L) is filtered by cooling and sedimentation, part of the organic matter (COD<15000mg / L) is removed; the cooling and sedimentation under the conditions of 40°C / 50°C / 60°C / 70°C are investigated respectively Effect; Table 1 shows the sedimentation effect under different temperature conditions.

[0035] Table 1

[0036] Raw water COD(mg / L) temperature(°C) Effluent COD(mg / L) COD removal rate 25000 40 13004 48％ 25000 50 15010 40％ 25000 60 17200 31％ 25000 70 20104 20％

[0037] The results show that the effects of cooling and sedimentation are different under different temperature conditions, and the COD removal rate is the highest at 48% at 40% °C, and the effect is the best.

[0038] (2) The filtrate from sedimentati...

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Abstract

The invention belongs to the field of wastewater treatment, and particularly relates to a method for recovering tert-butylamine from rubber accelerator TBBS wastewater. The method comprises the following steps: (1) cooling and settling the rubber accelerator TBBS wastewater to separate out organic resin, filtering, and taking filtrate for next treatment; (2) carrying out MVR evaporation concentration on the filtrate, returning mother liquor to a raw water system for retreatment, and carrying out next-step treatment on condensed water; (3) after the COD of the condensed water is less than 500mg / L after the condensed water is adsorbed by acidic resin, returning the condensed water to a production system for recycling, and after the saturated resin is backwashed by inorganic acid, recycling the tert-butylamine raw material. According to the process, raw water is pretreated by adopting a cooling sedimentation method, most organic matters are removed, the quality of water entering an MVR system is improved, the MVR evaporation load is reduced, condensed water is adsorbed by acidic resin, the quality of production reuse water is improved, tert-butylamine in wastewater can be recovered, and the amine consumption of a product is reduced.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a method for recycling t-butylamine from rubber accelerator TBBS waste water. Background technique [0002] The raw material tert-butylamine in the synthesis process of the rubber accelerator TBBS is in excess relative to 2-mercaptobenzothiazole (MBT). As a result, the COD of wastewater is as high as 20,000mg / L or more, the wastewater is difficult to treat, and it causes waste of raw materials, resulting in high product costs. [0003] There are currently 4 treatment options for the above wastewater: [0004] 1) Catalytic oxidation method + multi-effect evaporation: In the presence of a catalyst, under high temperature and high pressure, oxygen and air or other oxidants are used to oxidize the organic matter in the wastewater into carbon dioxide and water, and the oxidized water is then subjected to multi-effect evaporation , the condensed water returns to the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C07C209/86C07C211/07C02F101/30C02F103/36
CPCC02F9/00C07C209/86C07C211/07C02F1/001C02F1/048C02F1/286C02F2001/007C02F2101/30C02F2103/36
Inventor 李霞陆平刘海良贾楠楠何秀萍
Owner KEMAI CHEM
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