Plate-fin heat exchanger with built-in catalyst

Abstract

A plate-fin heat exchanger with a built-in catalyst comprises a heat exchanger body, the heat exchanger body is composed of an inlet connecting pipe, an outlet connecting pipe, end sockets and a plate-fin heat exchanger core, a flow deflector is arranged above the plate-fin heat exchanger core, and the end sockets are arranged on the two sides and the upper portion of the flow deflector. A first high-temperature medium inlet is formed in the top of the upper sealing head, a low-temperature medium outlet and a second high-temperature medium inlet are formed in the sealing heads on the two sides respectively, sealing heads are arranged on the two sides of the lower portion and the bottom of the plate-fin heat exchanger core respectively, and the sealing head at the bottom of the plate-fin heat exchanger core is the first high-temperature medium outlet. The plate-fin heat exchanger has the dual functions of catalytic conversion and low-temperature heat exchange and is compact in structure, and the space occupied by equipment in a cold box is reduced.

Description

technical field [0001] The invention relates to a plate-fin heat exchanger with a built-in catalyst, which belongs to the field of low temperature heat exchange. Background technique [0002] Plate-fin heat exchangers are widely used in air separation, petrochemical, hydrogen liquefaction and other low temperature heat exchange fields because of their good heat exchange effect, compact structure and strong adaptability. The plate-fin heat exchanger utilizes the disturbance of the medium by the fins in the heat transfer channel, so that the cold and hot medium have high heat exchange efficiency. In addition, the plate-fin heat exchanger can choose different fins and guide fins according to different media, which can well meet the mutual heat exchange between gas medium, gas-liquid mixed medium and liquid medium. However, in some fields that require simultaneous low-temperature heat exchange and catalytic conversion, such as hydrogen liquefaction, it is usually necessary to h...

AI Technical Summary

Problems solved by technology

However, in some fields that require low-temperature heat exchange and catalytic conversion at the same time, such as hydrogen liquefaction, a plate-fin heat exchanger and a catalytic device filled with catalyst are usually required at the same time, and there is another gap between the catalytic device and the plate-fin heat exchanger. It needs to be connected through pipelines. In addition, the safety protection measures and cold preservation measures of the catalytic device must be considered, which will increase the volume of the entire cold box, increase equipment investment costs, and cause loss of cooling capacity.

Images