Heat exchange device resistant to high temperatures, high pressure and hydrogen corrosion

Abstract

The invention discloses a heat exchange device resistant to high temperatures, high pressure and hydrogen corrosion. The device comprises a shell and a tube plate arranged in the shell, and an inner cavity of the shell is divided into a heat exchange cavity and a refrigerant cavity by the tube plate. The refrigerant cavity is divided into a liquid inlet cavity and a liquid outlet cavity. A heat insulation cylinder and a high-temperature inner header are installed in the heat exchange cavity, and the two ends of a U-shaped heat exchange pipe are communicated with the liquid inlet cavity and the liquid outlet cavity through the tube plate. A communicating part for communicating the inside and outside of the heat insulation cylinder is arranged between the heat insulation cylinder and the tube plate. The high-temperature inner header is communicated with the heat insulation cylinder. A gas inlet pipe and a gas outlet pipe are arranged on the shell, the gas inlet pipe directly faces the high-temperature inner header and is communicated with the high-temperature inner header, and the gas outlet pipe directly faces the communicating part. A first heat preservation material is filled between the high-temperature inner header and the shell, an annular gap between the heat insulation cylinder and a cylinder body forms a dead gas area, and the dead gas area is communicated with an inner cavity of the heat insulation cylinder through the communicating part. By means of the heat exchange device, the manufacturing cost of equipment can be well reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, in particular to a heat exchange device resistant to high temperature, high pressure and hydrogen corrosion. Background technique [0002] At present, the use of heat exchangers to recover the reaction heat of the synthesis gas reaction is more common using tube heat exchangers. Since the temperature of the synthesis gas is high and contains high concentration of hydrogen, in order to ensure the safe operation of the heat exchanger, the equipment It needs to be made of materials that are resistant to high temperature and strong hydrogen corrosion, which leads to high production cost of the heat exchanger and high maintenance cost of the equipment, resulting in high purchase cost of the reaction heat recovery device. Contents of the invention [0003] Aiming at the problem of high manufacturing cost of existing reaction heat recovery devices, this application proposes a heat exchange ...

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Problems solved by technology

[0002] At present, the use of heat exchangers to recover the reaction heat of the synthesis gas reaction is more common using tube heat exchangers. Since the temperature of the synthesis gas is high and contains high concentration of hydrogen, in order to ensure the safe operation of the heat exchanger, the equipment It needs to be made of materials resistant to high temperature and strong hydrogen corrosion, which leads to high production costs of heat exchangers and high maintenance costs of equipment, resulting in high purchase costs of reaction heat recovery devices

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