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Light gasoline catalytic rectification etherification device and technique

A catalytic rectification and light gasoline technology, which is applied in the fields of multi-stage series refining process, petroleum industry, and hydrocarbon oil treatment, and can solve the problems affecting the oxygen stability index of gasoline, automobile exhaust pollution, and affecting the full combustion of gasoline, etc. , to achieve the effect of reducing olefin content, reducing raw material consumption and good effect

Inactive Publication Date: 2015-04-29
CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessive olefin content in gasoline will lead to poor stability of gasoline and affect the oxygen stability index in gasoline. The oil product is easy to change color, form colloid, easily block the engine nozzle, and generate deposits in the engine intake valve and combustion chamber. And it will also affect the full combustion of gasoline and aggravate the emission pollution of automobile exhaust

Method used

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  • Light gasoline catalytic rectification etherification device and technique
  • Light gasoline catalytic rectification etherification device and technique
  • Light gasoline catalytic rectification etherification device and technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A light gasoline catalytic rectification etherification device, including a pre-reactor, a catalytic reaction rectification tower, a methanol extraction tower and a methanol refining tower;

[0034] The top of the prereactor is provided with a prereactor feed port, and the bottom end is provided with a prereactor discharge port;

[0035] The top of the catalytic reaction rectification tower is provided with a discharge port at the top of the catalytic reaction rectification tower, the upper part is provided with the methanol feed port of the catalytic reaction rectification tower and the feed port of the catalytic reaction rectification tower, and the bottom of the tower is provided with an etherification Rear product outlet;

[0036] The rectification section and the etherification reaction section of the catalytic reaction rectification tower adopt window-opening flow-guiding structured packing, and each packing layer contains two different structures of component A a...

Embodiment 2

[0058] The light gasoline catalytic rectification etherification device adopted in the present embodiment is the same as that in Embodiment 1.

[0059] In this embodiment, the process steps of using the above-mentioned device to carry out the etherification of light gasoline by catalytic rectification are:

[0060] 1.1, the light gasoline raw material and methanol containing active olefins (mainly composed of 2-methyl-1-butene, 2-methyl-2-butene) enter the prereactor from the feed port of the prereactor for preliminary The etherification reaction generates TAME, wherein: the feed flow rate of methanol to the prereactor is 6.44×10 3 kg / h, the feed flow rate of light gasoline to the prereactor is 5.00×10 4 kg / h, the temperature of the pre-reactor is 60°C, the operating pressure of the pre-reactor is 0.1 MPa, and the reacted mixture is taken out from the outlet of the pre-reactor.

[0061] 1.2. Enter the mixture produced in step 1.1 and newly supplemented methanol into the cata...

Embodiment 3

[0074] The light gasoline catalytic rectification etherification device adopted in the present embodiment is the same as that in Embodiment 1.

[0075] In this embodiment, the process steps of using the above-mentioned device to carry out the etherification of light gasoline by catalytic rectification are:

[0076] 1.1, the light gasoline raw material and methanol containing active olefins (mainly composed of 2-methyl-1-butene, 2-methyl-2-butene) enter the prereactor from the feed port of the prereactor for preliminary The etherification reaction generates TAME, wherein: the feed flow rate of methanol to the prereactor is 9.06×10 3 kg / h, the feed flow rate of light gasoline to the prereactor is 6.00×10 4 kg / h, the temperature of the pre-reactor is 45°C, the operating pressure of the pre-reactor is 0.1 MPa, and the reacted mixture is taken out from the outlet of the pre-reactor.

[0077] 1.2. Enter the mixture produced in step 1.1 and newly supplemented methanol into the cata...

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Abstract

The invention discloses a light gasoline catalytic rectification etherification device and technique. The device comprises a pre-reactor, a catalytic reaction rectification tower, a methanol extraction tower and a methanol refinement tower. The technique comprises the following steps: a light gasoline raw material containing active olefins is mixed with methanol in the pre-reactor to perform etherification reaction so as to generate TAME (tert amyl methyl ether); the reaction product is pumped to the catalytic reaction rectification tower; new methanol is supplemented into the tower, so that the active olefins perform etherification reaction with the methanol, wherein the total conversion rate is 99.5% above; under the rectifying action, the TAME and other heavy components are distilled off from the tower bottom, the unreacted active olefins, methanol and other light components are distilled off from the tower top and enter the methanol extraction tower; and water enters via the upper part of the methanol extraction tower, the methanol water solution is discharged from the tower bottom and enters the methanol refinement tower, the methanol is discharged from the top of the methanol refinement tower and returns to the pre-reactor, and the water from the tower bottom returns to the upper part of the methanol extraction tower, thereby implementing recycling. The method is simple, has the advantages of favorable effect and high conversion rate of active olefins, and is beneficial to lowering the olefin content and enhancing the octane number of the oil product in the field of etherification of light gasoline.

Description

technical field [0001] The invention relates to a light gasoline catalytic rectification etherification device and process, belonging to the technical field of petrochemical industry. Background technique [0002] With the strengthening of environmental awareness, countries around the world have continuously increased the requirements for gasoline combustion emissions. Excessive olefin content in gasoline will lead to poor stability of gasoline and affect the oxygen stability index in gasoline. The oil product is easy to change color, form colloid, easily block the engine nozzle, and generate deposits in the engine intake valve and combustion chamber. And it will also affect the full combustion of gasoline and aggravate the emission pollution of automobile exhaust. In addition, highly volatile olefins are easy to evaporate into the atmosphere, accelerate the formation of tropospheric ozone, and form photochemical smog. Therefore, reducing the olefin content of FCC gasoline ...

Claims

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Application Information

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IPC IPC(8): C10G53/04
CPCC10G53/04C10G2300/104C10G2300/1044
Inventor 黄益平孙玉玉岳昌海黄晶晶倪嵩波陆晓咏徐义明
Owner CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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