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Washing cooling device and method for methanol-to-olefins reaction product gas

A technology of methanol to olefins and cooling device, applied in chemical instruments and methods, separation methods, vapor condensation and other directions, can solve problems such as clogging of trays, and achieve the effect of avoiding clogging and slowing down the condensation speed

Active Publication Date: 2015-06-24
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a washing and cooling device and method for methanol to olefins reaction product gas, so as to improve the clogging of heavy hydrocarbons mixed with fine catalyst powder after condensation of methanol to olefins reaction product gas in the prior art. Defects caused by some trays

Method used

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  • Washing cooling device and method for methanol-to-olefins reaction product gas

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Experimental program
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Effect test

Embodiment 1

[0046] Use attached figure 1 In the described device, the height of the washing tower 11 is 15 m. The product gas after being washed and cooled by the quench tower enters the washing tower 11 at a high temperature of 110°C for further washing and cooling. The temperature of the washing water is 50°C. After cooling the product gas, the temperature at the bottom of the washing tower is 90°C and the pressure is 0.15 MPa, the organic matter partially condensed during the washing and cooling process enters the bottom of the washing cooling tower with the top-down washing water, overflows into the grease trap 14 at the bottom of the washing cooling tower, and enters the oily water tank 23 together with water;

[0047] The temperature of the reacted gas coming out of the top of the water washing tower 11 is 70°C, and then it enters the first air cooler 22 and the first water cooler 21 in sequence, and then is sent to the gas separation unit; among them, the first air cooler 22 The temp...

Embodiment 2

[0051] Use attached figure 1 In the device, the height of the washing tower is 25m. The product gas after being washed and cooled by the quench tower enters the washing tower 11 at a high temperature of 120°C for further washing and cooling. The temperature of the washing water in the washing tower 11 is 60°C, the temperature at the bottom of the washing tower is 100°C, and the pressure is 1.5MPa. Part of the condensed organic matter in the washing and cooling process enters the bottom of the washing cooling tower with the top-down washing water, overflows into the grease trap 14 at the bottom of the washing cooling tower, and enters the oily water tank 23 together with water;

[0052] The temperature of the reacted gas coming out of the top of the water washing tower 11 is 72°C, and then it enters the first air cooler 22 and the first water cooler 21 in sequence, and then is sent to the gas separation unit; among them, the first air cooler 22 The temperature of the air is the o...

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Abstract

The invention discloses a washing cooling device and method for methanol-to-olefins reaction product gas. The device comprises a first washing cooling unit and a second washing cooling unit, the first washing cooling unit is provided with a product gas inlet and a first washing cooling gas outlet, the second washing cooling unit is provided with a second washing cooling gas inlet and a second washing cooling gas outlet, and the second washing cooling gas inlet is connected with the first washing cooling gas outlet; the second washing cooling gas outlet is connected with a methanol-to-olefins reaction oil-water separating device; the first washing cooling unit comprises a washing tower, and the upper tower diameter and the lower tower diameter of the washing tower are identical. The upper and lower tower diameters of the washing tower are identical, jamming of a tray of the washing tower due to heavy-hydrocarbon condensation is avoided; in addition, the second washing cooling unit is added, and heavy hydrocarbon in the product gas is further removed, so that the product gas can reach subsequent temperature required to reach the separating device without affection on stability of the separating device.

Description

Technical field [0001] The invention relates to the field of methanol-to-olefin reaction, in particular to a washing and cooling device and method for methanol-to-olefin reaction product gas. Background technique [0002] Low-carbon olefins such as ethylene and propylene are important basic raw materials in the modern petrochemical industry. The production of bulk chemicals such as synthetic plastics, synthetic rubber, and synthetic fibers cannot do without olefins. The traditional production of ethylene and propylene uses petroleum as a raw material and is subject to the limitation of petroleum resources. While my country's oil resources are relatively scarce, the demand for oil and petrochemical products has grown rapidly with the development of social economy. The demand for oil has far exceeded domestic production, and the contradiction between supply and demand has become increasingly prominent. It is the future development trend to alleviate the contradiction of petroleum ...

Claims

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Application Information

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IPC IPC(8): B01D47/06B01D47/05B01D5/00B01D53/18C07C7/11C07C11/02
Inventor 高文刚王勇赵良蒋永州苟荣恒何源郭伟郭晓东何海科李国锋
Owner CHNA ENERGY INVESTMENT CORP LTD