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Front-placed type axial-radial synthesis tower

An axial-radial, front-end technology, which is applied in the synthesis reaction of ammonia, dimethyl ether, and medium-pressure combined alcohol production, can solve the problems of large power consumption of the cycle machine, large resistance of the synthesis tower, and non-recovery of reaction heat, etc. Achieve the effect of high heat recovery grade, lower tower resistance and high reaction heat recovery rate

Inactive Publication Date: 2006-12-13
ZHEJIANG UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art that the resistance of the synthesis tower is relatively large, the power consumption of the cycle machine is large, and the heat of reaction is not recovered, the present invention provides a method that reduces the resistance of the synthesis tower, can significantly reduce the power consumption of the cycle machine, and has a high recovery of reaction heat. front-mounted shaft-radial synthesis tower

Method used

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  • Front-placed type axial-radial synthesis tower

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Effect test

Embodiment 1

[0018] see figure 1 : consists of outer cylinder (1), gas collection box (2), cover plate (3), gasket (4), inner cylinder body (5), air induction pipe (6), upper ring pipe (7), descending cooling pipe (8), up cold pipe (9), lower ring pipe (10), center pipe (11), well frame (12), support ring (13), radial outer cylinder I (14), radial inner cylinder I (15), cold shock tube (16), diamond distributor (17), radial inner cylinder II (18), radial outer cylinder II (19), conical flower plate (20), lower head support (21), catalyst discharge pipe (22), bulkhead (23) constitute the synthesis tower, wherein parts (2) ~ (23) form the inner cylinder, and parts (6) ~ (10) are welded into a single tube baffle cooling Tube tube, a cover plate (3) is provided between the gas collection box (2) and the cold tube tube, and the air-leading tube (6) of the cold tube tube is connected to the gas collection box (2) and the cold tube tube, and the cold tube tube Supported on the inner cylinder wa...

Embodiment 2

[0022] DN1200 alcohol synthesis tower, filled with C 207 Type Catalyst 11.5m 3 , cold pipe area 140m 2 . The tower inlet pressure is 12.0MPa, and the tower gas volume is 115000Nm 3 / h, of which the amount of cold shock gas ~ 25000Nm 3 / h. Into the tower gas composition: H 2 : 70.1%, CO: 4.2%, CO 2 : 0.5%, N 2 : 24.1%, CH 4 : 1.1%. The bed temperature is 230°C, the tower gas is 240°C, and the tower gas pressure is 11.6MPa. The production of sperm alcohol is 4.5t / h, and the by-product of ~0.5MPa steam is 2.4t / h.

[0023] The remaining structures and implementation methods of this embodiment are the same as those of Embodiment 1.

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Abstract

The related front axis-radial converter comprises an outside drum and an inside drum, wherein the inside drum comprises: a collection box, a cover plate, a pad, an body, a cold-tube liner, a central tube, a #-shaped frame, a support ring, a radial outside drum I / II, a radial inside drum I / II, a quench tube, a distributor, a taper figure pattern board, a low head-seal bearing, a catalyst-out tube, and a bulkhead. This invention has ideal temperature distribution, large production capacity, and applies conveniently.

Description

(1) Technical field [0001] The invention relates to a cold tube-cold shock type gas-solid phase catalytic reactor, which is mainly used for the exothermic reaction of methanol synthesis, especially for the occasion of medium-pressure alcohol production, and can also be used for the synthesis reaction of dimethyl ether and ammonia . (2) Background technology [0002] A heat exchanger is installed in the lower part of the general cold-tube synthesis tower except for the catalyst basket. This is to ensure that the gas entering the bed reaches the activation temperature of the catalyst, and part of the heat is taken from the heat exchanger to recover the high-temperature gas from the bed. But this will inevitably reduce the temperature of the outlet gas, reduce the recoverable heat of the outlet gas, and also reduce the grade of recovered heat. In addition, the traditional internal parts of the synthesis tower also make it more difficult for the catalyst to self-unload due to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02
Inventor 陈运根喻旭春刘华彦杨祖望任贤朋谈志人
Owner ZHEJIANG UNIV OF TECH
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