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High-accuracy and high-capacity dehydration method of various materials in petrochemical process

A petrochemical and material technology, which is applied in the field of petrochemical material purification, can solve the problems of poor development, unreported dehydration, and production capacity that has not yet been formed. It can achieve strength and stability without reduction, reduce regeneration costs, and absorb water The effect of high magnification

Inactive Publication Date: 2009-12-02
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, applied research has not yet been carried out well, and production capacity has not yet been formed. It is a product with a very promising market prospect.
[0011] Although the polymer water-absorbent resin has strong water absorption, it has not been reported to be used in the dehydration of various materials such as oil products in the petrochemical process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The experimental procedure is as follows: The evaluation test of the test dehydrating agent is carried out in a pressurized evaluation device. The diameter of the reactor of the pressurized evaluation device is 13 mm, the particle size is 40-60 mesh, and the loading volume is 10 ml. Test conditions: Airspeed is 2.0h -1 ; The temperature is 20°C; the pressure is 1.0Mpa. Let the liquefied petroleum gas pass through the reactor of the pressurized evaluation device, and detect the liquefied petroleum gas at the inlet and outlet with a water analysis instrument. The experimental raw material is catalytic cracking liquefied petroleum gas after alkali washing, with a water content of 2000ppm.

[0021] The dehydrating agent is cross-linked polyacrylate, which runs for 20 days (equivalent to twice the dehydration rate), the outlet water content is less than 200ppm, and the dehydration rate is greater than 90%.

Embodiment 2

[0023] The experimental procedure is as follows: The evaluation test of the test dehydrating agent is carried out in a pressurized evaluation device. The diameter of the reactor of the pressurized evaluation device is 13 mm, the particle size is 40-60 mesh, and the loading volume is 10 ml. Test conditions: Airspeed is 2.0h -1 ; The temperature is 21°C; the pressure is 1.0Mpa. Let the liquefied petroleum gas pass through the reactor of the pressurized evaluation device, and detect the liquefied petroleum gas at the inlet and outlet with a water analysis instrument. The experimental raw material is catalytic cracking liquefied petroleum gas after alkali washing, with a water content of 2000ppm.

[0024] The dehydrating agent is vinyl alcohol-acrylic acid salt block copolymer, which runs for 20 days (equivalent to twice the dehydration rate), the outlet water content is less than 200ppm, and the dehydration rate is greater than 90%.

Embodiment 3

[0026] The experimental procedure is as follows: The evaluation test of the test dehydrating agent is carried out in a pressurized evaluation device. The diameter of the reactor of the pressurized evaluation device is 13 mm, the particle size is 40-60 mesh, and the loading volume is 10 ml. Test conditions: Airspeed is 2.0h -1 ; The temperature is 22°C; the pressure is 1.0Mpa. Let the liquefied petroleum gas pass through the reactor of the pressurized evaluation device, and detect the liquefied petroleum gas at the inlet and outlet with a water analysis instrument. The experimental raw material is catalytic cracking liquefied petroleum gas after alkali washing, with a water content of 2000ppm.

[0027] The dehydrating agent is cellulose grafted acrylate, which runs for 20 days (equivalent to twice the dehydration rate), the outlet water content is less than 200ppm, and the dehydration rate is greater than 90%.

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Abstract

The invention provides a high-accuracy and high-capacity dehydration method of various materials in petrochemical process. The dehydrating agent is selected from one of or a mixture of two of quadripolymers such as cross-linked polyacrylate, vinyl alcohol-acrylate segmented copolymer, modified PVA, polyvinyl alcohol, polyacrylamide, starch graft acrylate, starch, acrylic acid-acrylamide and maleic anhydride and the like, cellulose graft acrylate and starch graft acrylonitrile saponification hydrolysate. The dehydration method in the invention has high water absorbency and reduces the dehydration cost.

Description

technical field [0001] The invention relates to a high-precision and high-capacity dehydration method for various materials in a petrochemical process, which belongs to the petrochemical material purification technology. Background technique [0002] Moisture and sediment in crude oil often bring troubles to processing and refining. Sediment will block, wear and even corrode equipment, and the existence of water is sometimes the main cause of liquid flooding in distillation (distillation tower flushing). However, the moisture in petroleum products can cause the flame to disperse and flash back, or completely interrupt the combustion and cause flameout; as for the deposit, it is one of the reasons for the blockage of the burner nozzle and the abrasion of the nozzle and sensitive parts. Thermal efficiency is greatly reduced due to heat loss due to abnormal combustion. [0003] There are roughly three forms of water in petroleum products: ①Suspended, water is suspended in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04
Inventor 汪祥胜孙志伟吴志强
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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