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Production of olefin oxides

A technology for oxidizing olefins and olefins, which is applied in the field of hydrocarbon oxidation systems and can solve problems such as out of control

Active Publication Date: 2016-08-17
DOW TECH INVESTMENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Failure to cool the oxidized olefin product can lead to further reactions which can result in unwanted by-products
In addition, attention should be paid to the temperature control of the reaction vessel, because the oxidation of olefins is a highly exothermic reaction, and the absence of a proper temperature control mechanism can lead to a "runaway reaction"

Method used

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  • Production of olefin oxides
  • Production of olefin oxides
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1- image 3

[0066] image 3is a mixture containing olefins and oxygen and supplied to two reactors Rx1 and Rx2 (for example, figure 2 , a representative graph of the temperature of stream 204 supplied to reactor 201-1 and stream 206 supplied to reactor 201-2). Temperature readings of the same value are represented by dots overlapping each other. Such an ideal situation is represented by a dashed line with a slope of 1, also known as a single line. Such as image 3 As shown, the temperature readings at the inlets of each reactor are predicted to be essentially the same for mixtures comprising olefins and oxygen (eg, the temperature readings closely follow the single line). As described herein, the substantially identical temperature readings for the inlets of each reactor are a direct result of the increased controllability of one coolant drum and single cross-flow heat exchanger for the two reactors.

Embodiment 2

[0067] Example 2 – Figure 4

[0068] Figure 4 is the outlet product of the two reactors Rx1 and Rx2 containing olefin oxides (e.g., figure 2 , a representative graph of the temperature of stream 208 from reactor 201-1 and stream 210 from reactor 201-2). Such as Figure 4 As shown, the temperature measurements of the product outlet streams of each reactor Rx1 and Rx2 are predicted to be substantially the same. Therefore, the temperature measurement is similar to the single line. As described herein, the temperature readings for the product outlet streams of each reactor were substantially the same as a direct result of the increased controllability of one coolant drum and single cross-flow heat exchanger for the two reactors.

Embodiment 3

[0069] Example 3 – Figure 5

[0070] Figure 5 is the coolant fluid outlet of each of reactors Rx1 and Rx2 (e.g., figure 2 , a representative graph of the temperature of stream 214 from reactor 201-1 and stream 216 from reactor 201-2). A temperature indication of the same value for each reactor will produce a line with a slope of 1, also known as Figure 5 The single line indicated by the dotted line above. Such as Figure 5 As shown, the temperature measurements of the coolant fluid outlet streams of each reactor are predicted to be substantially equal. A predictive representation of the accurate nature of the coolant fluid outlet stream temperatures from the two reactors, in contrast to previous methods such as Figure 6 ) compared to the improvement in coolant temperature control.

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PUM

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Abstract

A system and method for the production of oxidized olefins. The system includes two or more reactors having a number of reaction tubes. A catalyst for catalytic oxidation of olefins is on a first side of the number of reaction tubes. A common supply line supplies a mixture comprising olefins and oxygen to the catalyst. Product outlet streams from each reactor are joined to a single product stream. Coolant fluid passing through the reactors flows into a single coolant drum. The single coolant drum supplies the coolant fluid at a common temperature to a number of coolant fluid inlet streams of each reactor.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 61 / 500,428, filed June 23, 2011, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to systems and methods for oxidation of hydrocarbons, in particular systems and methods for oxidation of olefins. Background technique [0004] Alkenes (eg, alkenes) are unsaturated hydrocarbons containing one or more pairs of carbon atoms joined by double bonds. Alkenes are classified in one or both of the following ways: (1) Cyclic or acyclic (aliphatic) alkenes in that the double bond is located respectively on a carbon atom forming part of a cyclic (ring-closed) group or an open-chain group Between, and (2) monoolefins, diolefins, trienes, etc., in that the number of double bonds per molecule is one, two, three, or some other number, respectively. Alkenes containing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/06B01J19/00
CPCB01J8/067B01J19/0013C07D301/06
Inventor K·E·纽曼B·B·奥斯本J·F·肖尔
Owner DOW TECH INVESTMENTS
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