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Technology for preparing formaldehyde only through methanol oxidation method

An oxidation method and formaldehyde technology, applied in the direction of organic chemistry, etc., can solve the problems of high cost, poor product quality, immature production technology, etc., and achieve the effect of convenient use and reasonable design

Inactive Publication Date: 2010-08-25
TIANJIN TAIHENG GASES
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Problems solved by technology

[0002] At present, formaldehyde is an important raw material in the organic synthesis industry and has a wide range of applications, but the production technology is not yet mature, the cost is high, and the product quality is poor.

Method used

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  • Technology for preparing formaldehyde only through methanol oxidation method
  • Technology for preparing formaldehyde only through methanol oxidation method

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Embodiment Construction

[0010] refer to figure 1 , exhaust pipe (1), hydrogen controller (2), ECS reactor (3), absorption tower two (4), absorption tower one (5), evaporator (6), reactor (7), right waste heat Boiler (8), silencer filter (9), pressurization fan (10), circulation fan (11), pre-evaporator (12), right waste heat boiler (14) are assembled into one through connecting pipeline (13) according to their system functions And constitute.

[0011] When in use, in the process of producing formaldehyde, the ECS reactor (3) tube is filled with a Φ3.5mm×3.5mm iron-molybdenum catalyst, and the tubes are filled with organic heat carrier diphenyl ether, and its liquid level is slightly higher than that of the catalyst bed. , to remove the heat of reaction. When starting up for the first time, use an induction heater to heat the biphenyl ether to above 260°C, and then press it into the ECS reactor (3) tubes with its own vapor pressure to heat the catalyst to above 220°C. The air sent by the pressurize...

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Abstract

The invention discloses a technology for preparing formaldehyde only through methanol oxidation method. In the technology, a flue, a hydrogen controller, an ECS reactor, a tower 2, a tower 1, an evaporator, a reactor, a left waste heat boiler, a filter-silencer, a booster fan, a circulating fan, a pre-evaporator and a right waste heat boiler are assembled into one piece through a connection pipeline according to the system function. The design is reasonable and the operation is convenient, thus the technology is an ideal formaldehyde preparation technology.

Description

Technical field [0001] The invention relates to a technology for producing formaldehyde in the organic synthesis industry, in particular to a technology for producing formaldehyde by simple oxidation of methanol, which is suitable for chemical synthesis of formaldehyde. Background technique [0002] At present, formaldehyde is an important raw material in the organic synthesis industry and has a wide range of applications, but the production technology is not yet mature, the cost is high, and the product quality is poor. Contents of the invention [0003] The problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a technology for producing formaldehyde by simple oxidation of methanol. The technology is not only reasonable in process and simple in preparation, but also has easy-to-obtain raw materials, does not produce by-products, has high product yield and high utilization rate of raw materials. [0004] The technical s...

Claims

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Application Information

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IPC IPC(8): C07C47/052
Inventor 李中元
Owner TIANJIN TAIHENG GASES
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