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A kind of high-purity propane production method for environmentally friendly refrigerant r290

A production method and high-purity technology, applied in chemical instruments and methods, purification/separation of hydrocarbons, hydrocarbons, etc., can solve the problems of low purity of propane, inability to use it as a refrigerant, and production costs, and achieve low reaction temperature , low production cost, low device investment

Active Publication Date: 2018-07-27
SHANDONG YUEAN CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention relates to a high-purity propane production method for environmentally friendly refrigerant R290, and mainly aims at the problems of low propane purity in the prior art, which cannot be used as a refrigerant and high production cost, and provides a new high-purity propane production method

Method used

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  • A kind of high-purity propane production method for environmentally friendly refrigerant r290

Examples

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Effect test

Embodiment 1

[0027] Feedstock 1 contained 86% by weight of propane, 1.0% by weight of ethane, 1.5% by weight of propylene, 5.5% by weight of butane and 5.0% by weight of butene , The pentane content is 1.0%. In addition, the water content in the raw material 1 was 150 ppm (weight) and the sulfur content was 36 ppm (weight).

[0028] according to figure 1 The raw material 1 of the process shown enters the raw material pretreatment unit. The raw material pretreatment unit includes a desulfurization reactor and a dryer for desulfurization and dehydration. After treatment, the water content is less than 5ppm (weight) and the sulfur content is less than 1ppm (weight).

[0029] The hydrogenation reactor is a fixed bed reactor, the hydrogenation catalyst carrier of packing is alumina, the active component of the catalyst is palladium, and the auxiliary agent is cobalt, and the specific composition (weight) is 2.5% of palladium, 0.5% of cobalt, and 97% of alumina . The protective agent in the h...

Embodiment 2

[0034] Feedstock 1 contained 93% by weight of propane, 0.5% by weight of ethane, 2.5% by weight of butane, 3.0% by weight of butene and 1.0% by weight of pentane. In addition, the water content in the raw material 1 was 500 ppm (weight) and the sulfur content was 60 ppm (weight).

[0035] according to figure 1 The raw material 1 of the process shown enters the raw material pretreatment unit. The raw material pretreatment unit includes two desulfurization reactors and two dryers for desulfurization and dehydration. After treatment, the water content is less than 10ppm (weight) and the sulfur content is less than 1ppm (weight).

[0036] The hydrogenation reactor is a fixed-bed reactor, the hydrogenation catalyst carrier is alumina, the catalyst active component is nickel, and the auxiliary agent is molybdenum. The specific composition (weight) is 3.5% nickel, 0.1% molybdenum, and 96.4% alumina . The protective agent in the hydrogenation reactor is a mixture of silicon oxide an...

Embodiment 3

[0041]Feedstock 1 contained 96% by weight of propane, 0.1% by weight of ethane, 0.9% by weight of propylene, 1.5% by weight of butane and 1.0% by weight of butene , The pentane content is 0.5%. In addition, the water content in the raw material 1 was 100 ppm (weight) and the sulfur content was 10 ppm (weight).

[0042] according to figure 1 The raw material 1 of the process shown enters the raw material pretreatment unit. The raw material pretreatment unit includes a desulfurization reactor and two dryers for desulfurization and dehydration. After treatment, the water content is less than 5ppm (weight) and the sulfur content is less than 1ppm (weight).

[0043] The hydrogenation reactor is a trickle bed reactor, the loaded hydrogenation catalyst carrier is activated carbon, the active component of the catalyst is platinum, the auxiliary agent is cobalt, and the specific composition (weight) is 0.5% platinum, 0.05% cobalt, and the rest is active carbon. The protective agent ...

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Abstract

The invention provides a production method of high-purity propane used as an environment-friendly refrigerant R290. Low-purity propane is used as a raw material, after pretreatment of raw materials, saturated hydrogenation, separation and refining, and other processes, the high-purity propane is obtained. The high-purity propane can be used as the environment-friendly refrigerant R290. Added values of the low-purity propane are greatly increased, the process flow is simple, apparatus investment is low, and energy consumption is low. The method can be used in the field of production of the environment-friendly refrigerant.

Description

technical field [0001] The invention relates to a method for producing high-purity propane used for environment-friendly refrigerant R290. Background technique [0002] Propane comes from a wide range of sources. Oilfield gas and gas field condensate all contain a certain amount of propane. In addition, propane is also one of the by-products of oil refining units and naphtha steam cracking ethylene units. However, except that part of propane is used for dehydrogenation to produce propylene, most of propane is used as petroleum liquefied gas fuel, and the added value of the product is low. [0003] Propane can not only be used as a chemical raw material to produce propylene, but also one of the efficient and environmentally friendly refrigerants. At present, the most used refrigerant in China is still R22 refrigerant, and its main component is hydrochlorofluorocarbons (HCFCs). Stop the use of HCFCs. As a transitional solution, R22 is being gradually replaced by hydrofluoro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C7/00C07C9/08
CPCC07C7/005C07C9/08
Inventor 张茂
Owner SHANDONG YUEAN CHEM IND CO LTD
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