An energy-saving and environment-friendly formaldehyde production system and formaldehyde production method

Abstract

The invention relates to the field of production of chemical products, in particular to an energy-saving environment-friendly formaldehyde production system and a formaldehyde production method. The energy-saving environment-friendly formaldehyde production system comprises an air treatment device, a methanol treatment device and a methanol refining device, the air treatment device and the methanol treatment device are in parallel connection and both connected with an oxidation device, and the methanol refining device is serially connected with the oxidation device. The air treatment device is formed by sequential connection of an air filter, an air blower and an air heater, the methanol treatment device is formed by sequential connection of a methanol tank, an anti-explosion pump, a flowmeter and a methanol evaporator, and the methanol evaporator is a plate type evaporator. The energy-saving environment-friendly formaldehyde production system and the formaldehyde production method have the advantages that by technical modification and replacement of a tubular evaporator with the plate type evaporator, the problem that the methanol evaporator is prone to scale formation and damages is solved, and electric energy is saved while energy saving and environment friendliness are benefited.

Description

technical field [0001] The invention relates to the field of chemical product production, in particular to an energy-saving and environment-friendly formaldehyde production system and a formaldehyde production method. Background technique [0002] In the prior art, the methanol evaporator used in the formaldehyde production system is a tubular evaporator, and the treatment process for the raw material air and methanol for the production of formaldehyde is as follows: the air first passes through the air filter and blower, and then is heated by the air heater , and then enter the methanol evaporator to mix with the treated methanol, use the methanol evaporator to distill the treated air and methanol to the required temperature, then enter the mixer to heat the mixed gas, and finally enter the oxidizer For the production of formaldehyde. [0003] However, there are three disadvantages in this process: (1) Large waste of power and short production cycle. A formaldehyde product...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an energy-saving and environment-friendly formaldehyde production system and a formaldehyde production method in view of the above-mentioned defects. The tube evaporator is changed to a plate evaporator, and the process is improved to solve the problem that the methanol evaporator is easy to break down. Dirt and damage problems, saving electric energy, reducing the overall cost, economical and environmentally friendly, the technical solution of the present invention is as follows:

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