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C5 desulfurization purification process

A process and desulfurizer technology, applied in the field of C5 desulfurization purification process, can solve the problems of high total sulfur and low purity of C5, achieve quick results, less investment, and increase market competitiveness

Inactive Publication Date: 2020-02-04
宁波科元精化股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

C5 has a wide range of uses, but due to the high total sulfur content of C5, its low purity has a negative impact on market demand

Method used

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  • C5 desulfurization purification process

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Embodiment Construction

[0014] Such as figure 1 As shown, a C5 desulfurization purification process, a pipeline static mixer 2 is added before the feed of the C5 catalytic distillation tower 1, and a desulfurization agent injection port 3 is added before the pipeline static mixer 2, and the desulfurization agent injection port 3 is connected to a metering pump.

[0015] Further, the middle and upper part of the C5 catalytic distillation tower 1 is provided with a gas phase extraction port 4, through which the methyl tert-amyl ether in the C5 catalytic distillation tower is extracted.

[0016] Further, the reboiler at the bottom of the C5 catalytic distillation tower 1 is connected to a connecting line, so as to continuously discharge the desulfurizer and sulfur reaction product to the sewage treatment device.

[0017] Further, the temperature of the bottom sensitive plate of C5 catalytic distillation tower 1 is controlled at 130°C-138°C; the pressure of the top tower is controlled at 0.26±0.02MPA; th...

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Abstract

The invention relates to a C5 desulfurization purification process. A pipe static mixer is additionally arranged in front of material feeding of a C5 catalytic distillation tower, a desulfurizer injection port is additionally arranged in front of the pipe static mixer, and the desulfurizer injection port is connected with a metering pump. A gas phase extraction outlet is arranged in the middle andupper part of the C5 catalytic distillation tower, and through the gas phase extraction outlet, methyl tert-amyl ether in the C5 catalytic distillation tower is extracted. Through technical reform ofthe process, the extraction way of methyl tert-amyl ether is changed, by adding a desulfurizer at the desulfurizer injection port, the total sulfur content in the methyl tert-amyl ether and C5 can bereduced to no greater than 10PPM, the purity of C5 is increased to 95% or greater, the investment is small, the energy consumption is low, effects can be taken into play rapidly, long-term quality stability can be maintained, the market competitiveness can be improved, and benefits can be brought to enterprises.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a C5 desulfurization and purification process. Background technique [0002] The main principle of C5 deep processing etherification technology is to generate high-octane TAME (Methyl tert-amyl ether) products, the remaining C5 produced by this process has a high total sulfur content, reaching about 1000PPm, but the market requires ≯10PPM and the raw material C5 carries about 5% C4 components, which affects the purity of the remaining C5; the total sulfur is high, and the purity of C5 Low lack of market competitiveness, bringing huge economic and sales pressure; [0003] With the rapid development of my country's ethylene industry, the cracked C5 fraction will increase significantly. It is a low-investment and quick-result process route to use the cracked C5 fraction and methanol etherification reaction as a high-octane gasoline blending composition. Etherification technology Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C7/20C07C11/10C07C41/06C07C41/46C07C43/04
CPCC07C7/20C07C41/06C07C41/46C07C11/10C07C43/046Y02P20/10
Inventor 陶春风刘海星
Owner 宁波科元精化股份有限公司
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