Method for preparing olefin from synthesis gas and reaction and separation integrated reaction device

A reaction device and synthesis gas technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of many types of components, content of difficult-to-separate components, high energy consumption, etc.

Pending Publication Date: 2022-07-22
JISHOU UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the mixed gas after synthesis gas to olefins reaction contains ethylene, propylene, butene, pentene, methane, ethane, propane, butane, pentane, carbon dioxide, water vapor, and a large amount of unreacted carbon monoxide and hydrogen, etc. , containing many types of components, low single-component content

Method used

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  • Method for preparing olefin from synthesis gas and reaction and separation integrated reaction device
  • Method for preparing olefin from synthesis gas and reaction and separation integrated reaction device

Examples

Experimental program
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Effect test

Embodiment 1

[0112] The NaSFe@NCNC catalyst was prepared according to the method described in Example 6 of Patent CN111821976A. 1.0 g of the catalyst was weighed, 8.0 g of aluminum hydroxide powder, 1.5 g of polyvinyl alcohol and 8.5 mL of water were added. After heating to 90 °C, the materials were mixed uniformly and cooled. Then put it into a catalyst extruder, extrude clover-shaped particles with a diameter of 2mm and a length of 5-10mm, dry it in a blast drying oven at 100 °C for 4 hours, and then put it into a tube furnace, and heat it up to 10 °C / min under nitrogen protection. After calcination at 500°C for 6 hours, the catalyst was naturally cooled to obtain the desired shaped catalyst.

[0113] Select a stainless steel mesh with a wire diameter of 12 wires and a mesh size of 25 meshes. The stainless steel mesh is sealed, and then the stainless steel cage is inserted into the closed reaction vessel of a circular stainless steel tube with an inner diameter of 12 mm and a length of 5...

Embodiment 2

[0116] According to the method described in Example 5 of patent CN111821976, the nonahydrate ferric nitrate was replaced with equimolar cobalt nitrate hexahydrate, and the anhydrous potassium nitrate was replaced with equimolar anhydrous sodium nitrate, and the cobalt nanoparticles were prepared with a limit threshold of nitrogen. The catalyst in the doped carbon nanocages (marked as NaCo@NCNC), weighed 1.0 g of NaCo@NCNC catalyst, added 8.0 g of aluminum hydroxide powder, 1.5 g of polyvinyl alcohol and 8.5 mL of water, heated to 90 °C and mixed the materials After cooling, put it into a catalyst extruder to extrude clover-shaped particles with a diameter of 2mm and a length of 5-10mm, dry it in a blast drying oven at 100 °C for 4 hours, and then put it into a tube furnace under nitrogen protection at 10 °C / min The temperature was raised to 500°C for calcination for 6h, and the shaped catalyst was obtained by natural cooling.

[0117] Select a stainless steel mesh with a wire ...

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Abstract

The invention belongs to the technical field of synthesis gas conversion, and particularly relates to a method for preparing olefin from synthesis gas, namely a reaction and separation integrated reaction device. According to the method for preparing olefin from synthesis gas, the synthesis gas is introduced into a closed reaction container for reaction, a catalyst bed is arranged in the closed reaction container, a flowing absorption solvent is introduced in the closed reaction container, and the catalyst bed is not in contact with the absorption solvent; the method comprises the following steps: introducing synthesis gas into the catalyst bed for catalytic reaction to obtain olefin gas, and absorbing the olefin gas by the flowing absorption solvent to obtain an absorption solution; desorbing the absorption solution to obtain desorption gas, wherein the main component of the desorption gas is olefin. According to the method for preparing the olefin from the synthesis gas, provided by the invention, the conversion per pass of the synthesis gas is improved, the olefin content in the mixed gas obtained after desorption is increased, and the contents of the raw material gas and other components difficult to separate are reduced, so that the subsequent separation difficulty of the product is reduced, and the production cost and the energy consumption are reduced.

Description

technical field [0001] The invention belongs to the technical field of synthesis gas conversion, and in particular relates to a method for producing olefins from synthesis gas and a reaction separation integrated reaction device. Background technique [0002] Low-carbon olefins (including ethylene, propylene, butene, etc.) are important chemical raw materials for the production of polymer materials, detergents, organic solvents, cosmetics, and pharmaceuticals. In 2020, the equivalent consumption of ethylene and propylene in China will be close to 110 million tons, and it is still growing at a rate of 4 to 5%. At present, the main raw material for the production of small molecule olefins is still petroleum, but with the decreasing global oil resources, it is particularly important to develop non-petroleum small molecule olefin production technologies. [0003] Syngas means H 2 The mixed gas with CO can be converted from fossil energy such as coal, natural gas and petroleum,...

Claims

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Application Information

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IPC IPC(8): C07C1/04C07C11/02B01J8/00B01J8/02B01D53/14
CPCB01J8/008B01J8/0005B01J8/0242B01J8/0285B01J8/001B01D53/1493B01D53/1487C07C1/041C07C1/0485B01D2257/7022B01D2252/205B01D2252/2026B01D2252/204C07C11/02
Inventor 卓欧雷辉斌李飞韩涛
Owner JISHOU UNIVERSITY
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