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Method for coproduction of dicumyl peroxide (DCP) and epoxybutane (CHPBO)

A technology of dicumyl peroxide and butylene oxide, applied in the preparation of peroxy compounds, chemical instruments and methods, preparation of organic compounds, etc., can solve the problem of consumption of reducing agent and hydrogen, low CHP conversion rate, BO selection In order to achieve the effect of reducing waste water discharge treatment, shortening process flow and reducing equipment investment

Active Publication Date: 2015-07-15
SINOPEC SHANGHAI ENG +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is the problem of long process flow, low CHP conversion rate, low BO selectivity, consumption of reducing agent and hydrogen, and discharge of sulfur-containing waste water in the prior art. A new dicumyl peroxide DCP is provided Method for co-production with butylene oxide CHPBO

Method used

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  • Method for coproduction of dicumyl peroxide (DCP) and epoxybutane (CHPBO)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] in such as figure 1 In the shown process flow, the fresh raw material cumene (1) and the recycled cumene (19) reclaimed by the combined unit enter the alkali cleaning device (30) for alkali cleaning, and the cumene (20) and air after the alkali cleaning (2) gas-liquid two-phase oxidation reaction occurs in the cumene oxidation unit (21), generates CHP oxidation liquid (3), wherein a part of CHP oxidation liquid (5) enters the epoxidation reaction unit (22) of the BO device and Butene (4) undergoes an epoxidation reaction, and the epoxidation reaction product (7) enters the butene and BO separation unit (23), and the separated butene (8) returns to the epoxidation reaction unit (22) for recycling . From the thick dimethyl benzyl alcohol (9) flowing from butene and BO separation unit (23), the dimethyl benzyl alcohol rectification unit (25) of the DCP device separates the refined dimethyl benzyl alcohol (14) and Cumene (13). Refined dimethyl benzyl alcohol (14) enters ...

Embodiment 2

[0025] According to the conditions described in Example 1, only the production scale of the DCP industrial plant was changed to 1000 tons / year. As a result, the CHP conversion rate reaches 99.6%, and the BO selectivity reaches 99.1%. While producing 1,000 tons / year of DCP products, 266.7 tons / year of BO products are co-produced, and materials such as cumene, CHP and DMCA are recycled without vulcanization. The consumption of reducing agent and hydrogen raw material and the discharge of sulfur-containing wastewater.

Embodiment 3

[0027] According to the conditions described in Example 1, only the production scale of the DCP industrial plant was changed to 10,000 tons / year. As a result, the conversion rate of CHP reaches 99.7%, and the selectivity of BO reaches 99.2%. While producing 10,000 tons / year of DCP products, 2,666.7 tons / year of BO products are co-produced, and materials such as cumene, CHP and DMCA are recycled, and there is no Consumption of sulfide reducing agent and hydrogen feedstock and discharge of sulfur-containing wastewater.

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Abstract

The invention relates to a method for coproduction of dicumyl peroxide (DCP) and epoxybutane (CHPBO) to mainly solve the problems that the method in the prior art is long in flow, low in CHP conversion rate and low in BO selectivity, consumes a reducing agent and hydrogen, and discharges sulfur-containing wastewater. The invention adopts the technical scheme that the method for coproduction of DCP and epoxybutane (CHPBO) adopts the technical means of oxidation reaction, epoxidation reaction, condensation reaction and the like to realize efficient coupling of industrialized DCP and BO processes, wherein the CHP conversion rate reaches 97.2-99.7%, the BO selectivity reaches 95.7-99.2%, and the consumption of sulfide and hydrogen and the discharge of the sulfur-containing wastewater are avoided, so that the problems are well solved. The method can be used for production of DCP and epoxybutane.

Description

technical field [0001] The invention relates to a method for the joint production of dicumyl peroxide DCP and butylene oxide CHPBO. Background technique [0002] Dicumyl peroxide DCP is a crosslinking agent for rubber and plastics and an initiator for polymer materials, commonly known as "industrial monosodium glutamate", mainly used in the initiation of expandable polystyrene, crosslinking of wires and cables, shoemaking, etc. In the three major fields, the industrial demand is large. There are generally three industrial production methods of DCP: (1) cumene hydroperoxide CHP and α,α-dimethylbenzyl alcohol DMCA undergo condensation dehydration reaction to generate DCP; (2) CHP and α-methylstyrene undergo Addition reaction generates DCP; (3) CHP and α-chlorocumene generate DCP through displacement reaction. Among them: DMCA is made from CHP, and there are roughly three traditional methods: (1) Reduction method: reduce CHP with water-soluble sulfide and other inorganic redu...

Claims

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Application Information

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IPC IPC(8): C07C409/16C07C407/00C07D303/04C07D301/19
Inventor 李勇徐尔玲李镇东杨建平李真泽张斌何琨
Owner SINOPEC SHANGHAI ENG
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