Technology for producing formaldehyde through iron-molybdenum method

A production process and formaldehyde technology, which is applied in the field of French formaldehyde production process, can solve the problems of long catalyst supply cycle, cumbersome procedures, and high price, and achieve the effects of shortening the supply cycle, ensuring product quality, and short supply cycle

Inactive Publication Date: 2017-02-15
XINJIANG TIANZHI CHENYE CHEM +1
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  • Application Information

AI Technical Summary

Problems solved by technology

All iron-molybdenum catalysts are imported from abroad. Foreign catalysts have a long supply cycle, are expensive, and have cumbersome procedures. As the market demand gradually increases, the contradiction becomes more prominent.

Method used

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  • Technology for producing formaldehyde through iron-molybdenum method
  • Technology for producing formaldehyde through iron-molybdenum method

Examples

Experimental program
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Embodiment Construction

[0021] Refer to attached figure 1 , this embodiment includes sequentially connecting an air filter (1), a booster fan (2), a circulation fan (3), a methanol preheater (4), a methanol vaporizer (5), a formaldehyde reactor (6), and a formaldehyde Absorption tower (8), heat transfer oil condenser (7) and ECS tail gas treatment system (11);

[0022] (a). Raw air first enters the air filter, booster fan, and circulation fan in sequence to remove mechanical impurities, then enters the methanol preheater, and is heated by the dilute formaldehyde from the middle section of the formaldehyde absorption tower (8) before entering the methanol vaporizer , is heated by gas-phase formaldehyde from the formaldehyde reactor and then sent to the formaldehyde reactor;

[0023] (b). After the reaction in the iron-molybdenum catalyst bed of the formaldehyde reactor, it enters the shell side of the methanol vaporizer to vaporize the methanol, cools down the formaldehyde gas, and then enters the fo...

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Abstract

The invention relates to a technology for producing formaldehyde through an iron-molybdenum method. The technology utilizes an air filter, a booster fan, a circulating fan, a methanol preheater, a methanol vaporizer, a formaldehyde reactor, a formaldehyde absorption tower, a heat conduction oil condenser and an ECS tail gas treatment system and the above units are orderly connected. Through a national iron-molybdenum catalyst technology, the problem that the existing iron-molybdenum catalyst for formaldehyde production has dependence on import, the import period is long and an imported product has a high price is solved. The technology realizes nationalization of an iron-molybdenum catalyst for formaldehyde production, thoroughly breaks monopolization of the foreign catalyst technology in the iron-molybdenum catalyst market and has the characteristics of high conversion rate, high yield, high selectivity, long life and low unit consumption. The technology can be widely used in the field of formaldehyde production.

Description

technical field [0001] The invention relates to the field of formaldehyde production by iron-molybdenum method, in particular to a method for producing formaldehyde by method. Background technique [0002] Formaldehyde is one of the important raw materials in the organic chemical industry, and is widely used in wood industry, textile industry, antiseptic solution and other industries. At present, there are mainly two processes for formaldehyde production: the silver method and the iron-molybdenum method. Since the production of formaldehyde by the iron-molybdenum method was introduced into China, domestic formaldehyde production no longer relies solely on the silver method to produce formaldehyde. The production of formaldehyde by the silver method not only has a low conversion rate, but also has a methanol content of 2-3% in the formaldehyde product, high reaction temperature, and harsh operating conditions. The production of formaldehyde by iron-molybdenum method has high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/38C07C47/052
CPCC07C45/38C07C47/04
Inventor 吴彬邓建康关刚毛臻单芙蓉高军林李向荣
Owner XINJIANG TIANZHI CHENYE CHEM
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