Heat exchange device for composite methyl alcohol evaporator

Abstract

The invention relates to the field of methyl alcohol processing production, in particular to a heat exchange device for a composite methyl alcohol evaporator. The heat exchange device comprise a cylinder body, a sealing cover, a fixing structure, a scale removing structure, a sealing structure, a limiting structure and a heat exchange structure. When a first valve body and a third valve body are closed, and a second valve body and a fourth valve body are opened, external water enters the cylinder body from the upper end of the cylinder body, at the moment, water entering from a water inlet inthe upper end flushes a piston to the other end of the cylinder body, a metal ring is arranged between a heat exchange pipe and the piston, and connected with the heat exchange pipe in a sliding manner, therefore the piston drives the metal ring to slide on the exterior of the heat exchange pipe in the sliding process under the flushing force effect of the water, thus water scale on the exterior of the heat exchange pipe can be cleared away in time, flushing force of the water is far larger than elasticity of a second spring, and therefore the piston does not obstruct a water outlet in the lower end.

Description

technical field [0001] The invention relates to the field of methanol processing and production, in particular to a heat exchange device for a composite methanol evaporator. Background technique [0002] Methanol (CH3OH) is the simplest saturated monohydric alcohol with a CAS number of 67-56-1 or 170082-17-4, a molecular weight of 32.04, and a boiling point of 64.7°C. Because it was first discovered in retorted wood, it is also called "wood alcohol" or "wood essence". The lowest dose of human oral poisoning is about 100mg / kg body weight, and oral intake of 0.3-1g / kg can be fatal. Used in the manufacture of formaldehyde and pesticides, etc., and used as an extractant for organic matter and a denaturant for alcohol. The finished product is usually made by reacting carbon monoxide with hydrogen. In the production and processing of methanol, compound methanol evaporators are widely used, and in order to better extract methanol and save energy, it is generally necessary to ins...

AI Technical Summary

Problems solved by technology

[0003] When the heat exchanger is in use, tap water needs to be connected externally for heat exchange. Due to geological and environmental factors, the tap water in some areas has a high alkali content. Scale accumulates on the outside of the heat pipe, which seriously affects the heat transfer efficiency of the heat exchanger

Images