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Formaldehyde production energy-saving device and production process

An energy-saving device and formaldehyde technology, which is applied in the preparation of carbon-based compounds, organic compounds, chemical instruments and methods, etc., can solve the problems that affect the continuous and stable production, inflexible operation adjustment, short operation cycle, etc., and achieve good economy Benefits, short process flow, and small footprint

Pending Publication Date: 2021-03-09
潍坊惠丰化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing formaldehyde production process, the process flow is long, the energy consumption is high, the operation adjustment is not flexible enough, and the operation cycle is short, which affects the continuous and stable production

Method used

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  • Formaldehyde production energy-saving device and production process
  • Formaldehyde production energy-saving device and production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A formaldehyde production process, the steps are as follows:

[0051] (1), methanol and air enter into the ternary gas processor 1 under the action of the Roots blower 21 and the vacuum pump 31 respectively, and at the same time, open the first switch valve 41, and water vapor enters the ternary gas processor 1 through the first steam pipeline 4 Mix uniformly inside to obtain a ternary mixed gas.

[0052] (2) The mixed ternary mixed gas enters the oxidizer 5, and under the catalysis of the silver catalyst, the oxidation reaction of methanol is carried out at a high temperature of 590° C. to obtain reaction gas.

[0053](3), the reaction gas is sent to the absorption tower 8, and the reaction gas is washed and absorbed by the absorption liquid, and the obtained formaldehyde solution is finally collected in the collection tank 9, and the tail gas produced is transported to the incinerator 7 for incineration Treatment, the unabsorbed aqueous methanol solution is discharge...

Embodiment 2

[0055] A formaldehyde production process, the steps are as follows:

[0056] (1), methanol and air enter into the ternary gas processor 1 under the action of the Roots blower 21 and the vacuum pump 31 respectively, and at the same time, open the first switch valve 41, and water vapor enters the ternary gas processor 1 through the first steam pipeline 4 Mix uniformly inside to obtain a ternary mixed gas.

[0057] (2) The mixed ternary mixed gas enters the oxidizer 5, and under the catalysis of the silver catalyst, the oxidation reaction of methanol is carried out at a high temperature of 610° C. to obtain reaction gas.

[0058] (3), the reaction gas is sent to the absorption tower 8, and the reaction gas is washed and absorbed by the absorption liquid, and the obtained formaldehyde solution is finally collected in the collection tank 9, and the tail gas produced is transported to the incinerator 7 for incineration Treatment, the unabsorbed aqueous methanol solution is discharg...

Embodiment 3

[0060] A formaldehyde production process, the steps are as follows:

[0061] (1), methanol and air enter into the ternary gas processor 1 under the action of the Roots blower 21 and the vacuum pump 31 respectively, and at the same time, open the first switch valve 41, and water vapor enters the ternary gas processor 1 through the first steam pipeline 4 Mix uniformly inside to obtain a ternary mixed gas.

[0062] (2) The mixed ternary mixed gas enters the oxidizer 5, and under the catalysis of the silver catalyst, the oxidation reaction of methanol is carried out at a high temperature of 600° C. to obtain a reaction gas.

[0063] (3), the reaction gas is sent to the absorption tower 8, and the reaction gas is washed and absorbed by the absorption liquid, and the obtained formaldehyde solution is finally collected in the collection tank 9, and the tail gas produced is transported to the incinerator 7 for incineration Treatment, the unabsorbed aqueous methanol solution is discha...

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Abstract

The invention discloses a formaldehyde production energy-saving device and a production process, and relates to the technical field of formaldehyde production and manufacturing. An evaporator, a filter and a superheater are sequentially arranged in a ternary gas processor from bottom to top, and the ternary gas processor is connected with an oxidizer through a first mixed gas pipeline. A heat exchange layer is arranged on the periphery of the oxidizer in a sleeving mode, a water outlet pipeline is connected between the heat exchange layer and an incinerator, and the incinerator is connected with the ternary gas processor through a second steam pipeline. The output end of the oxidizer is connected with an absorption tower through a second mixed gas pipeline, an absorption tower is connectedwith a collection tank through a formaldehyde pipeline, the methanol aqueous solution pipeline is arranged between the ternary gas processor and the absorption tower, and a tail gas exhaust pipelineis arranged between the absorption tower and the incinerator.Good economic benefits are realized. The method has the advantages of short process flow, less equipment, small occupied area, less investment and good economic benefit.

Description

technical field [0001] The invention relates to the technical field of formaldehyde production and manufacturing, in particular to an energy-saving device for formaldehyde production and a production process. Background technique [0002] At present, there are mainly two methods of formaldehyde production at home and abroad: the silver method and the iron-molybdenum method. Among them, the silver method is widely promoted because of its advantages of small investment and large operating flexibility. The silver method production process uses methanol, air The three-way mixed gas with water vapor is dehydrogenated and oxidized to produce formaldehyde under the action of a silver catalyst. The reaction temperature is generally around 650 ° C, depending on the catalyst. [0003] However, in the existing formaldehyde production process, the process flow is long, the energy consumption is high, the operation adjustment is not flexible enough, and the operation cycle is short, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/38C07C47/04C07C45/78
CPCC07C45/38C07C45/783C07C47/04
Inventor 陈磊孙晶晶孙玉石石运冬牟林林
Owner 潍坊惠丰化工有限公司
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