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Iron-molybdenum formaldehyde production method

A production method and formaldehyde technology, which is applied in the field of iron-molybdenum method formaldehyde production, can solve problems such as the inability of the system to continue to operate, and achieve the effects of promoting high-efficiency and low-consumption operation, increasing conversion rate, and improving production efficiency

Inactive Publication Date: 2016-05-11
SICHUAN TIANHUA FUBANG CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention is safe and reliable, and can be applied to all formaldehyde iron-molybdenum catalysts, and solves the problem that the system cannot continue to operate after the original iron-molybdenum method catalyst with a special formula containing metal chromium is shut down; it promotes efficient and low-consumption operation of the system, improves production efficiency, and reduces production costs

Method used

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Examples

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Effect test

Embodiment 1

[0033] A kind of iron-molybdenum method formaldehyde production method, comprises the following steps successively:

[0034] Air intake: the intake pipe is used to send fresh air to the fan, and the connecting pipe III connected with the intake pipe sends recovered exhaust gas to the fan through the intake pipe, and the fresh air and recovered exhaust gas form a mixed gas at the inlet of the fan;

[0035] Mixing: The fan sends the mixed gas to the reactor through the connecting pipe Ⅰ, the methanol input pipe connected to the connecting pipe Ⅰ adds methanol to the connecting pipe Ⅰ, the mixed gas and methanol enter the reactor after mixing at the inlet of the reactor, and methanol is added The content is 8.5% by volume;

[0036] Reaction: The added methanol is brought into the reactor by the mixed gas for reaction to obtain a gas mixture. The gas mixture is sent to the absorption tower through the connecting pipe II. The controlled space velocity of the reaction is 3500m3--- / h...

Embodiment 2

[0044] A kind of iron-molybdenum method formaldehyde production method, comprises the following steps successively:

[0045] Air intake: the intake pipe is used to send fresh air to the fan, and the connecting pipe III connected with the intake pipe sends recovered exhaust gas to the fan through the intake pipe, and the fresh air and recovered exhaust gas form a mixed gas at the inlet of the fan;

[0046] Mixing: The fan sends the mixed gas to the reactor through the connecting pipe Ⅰ, the methanol input pipe connected to the connecting pipe Ⅰ adds methanol to the connecting pipe Ⅰ, the mixed gas and methanol enter the reactor after mixing at the inlet of the reactor, and methanol is added The content is 9% by volume;

[0047] Reaction: The added methanol is brought into the reactor by the mixed gas for reaction to obtain a gas mixture, which is sent to the absorption tower through the connecting pipe II, and the controlled space velocity of the reaction is 4000m 3 --- / h, the...

Embodiment 3

[0055] A kind of iron-molybdenum method formaldehyde production method, comprises the following steps successively:

[0056] Air intake: the intake pipe is used to send fresh air to the fan, and the connecting pipe III connected with the intake pipe sends recovered exhaust gas to the fan through the intake pipe, and the fresh air and recovered exhaust gas form a mixed gas at the inlet of the fan;

[0057] Mixing: The fan sends the mixed gas to the reactor through the connecting pipe Ⅰ, the methanol input pipe connected to the connecting pipe Ⅰ adds methanol to the connecting pipe Ⅰ, the mixed gas and methanol enter the reactor after mixing at the inlet of the reactor, and methanol is added The content is 9.5% by volume;

[0058] Reaction: The added methanol is brought into the reactor by the mixed gas for reaction to obtain a gas mixture, which is sent to the absorption tower through the connecting pipe II, and the controlled space velocity of the reaction is 4500m 3 --- / h, t...

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Abstract

The invention relates to an iron-molybdenum formaldehyde production method, which sequentially comprises the following steps of intake, mixing, reaction, absorption and tail gas treatment. The method is safe and reliable, and can be applied to all iron-molybdenum catalysts for formaldehyde, the problem that a system cannot continue running after the off production of an original chromium-containing iron-molybdenum catalyst adopting a special formula is solved, efficient and low-consumption running of the system is promoted, production benefits are improved, and production cost is reduced.

Description

technical field [0001] The invention relates to the field of iron-molybdenum method formaldehyde production, in particular to an iron-molybdenum method formaldehyde production method. Background technique [0002] At present, the traditional iron-molybdenum method formaldehyde production process must use the iron-molybdenum method catalyst with a special formula containing metallic chromium. In the production process, once other catalysts are used, explosion and catalyst agglomeration will occur, the device cannot operate normally, and the service life of the catalyst is less than 50%, and the iron-molybdenum method catalyst with a special formula containing metal chromium will not appear after returning to use. Phenomenon. The fatal problem is that the company of the iron-molybdenum method catalyst with a special formula containing chromium metal has stopped producing the special formula catalyst containing chromium metal, resulting in the inability of the existing process...

Claims

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Application Information

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IPC IPC(8): C07C45/38C07C47/052
CPCC07C45/38
Inventor 侯朝鹏郭大林刘孔满杨友明先中国袁林刘吉银胡小刚张利罗俊国
Owner SICHUAN TIANHUA FUBANG CHEM IND CO LTD
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