CN105135450A - Tail gas treatment method for formaldehyde produced through silver catalysis method - Google Patents
Tail gas treatment method for formaldehyde produced through silver catalysis method Download PDFInfo
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- CN105135450A CN105135450A CN201510561982.6A CN201510561982A CN105135450A CN 105135450 A CN105135450 A CN 105135450A CN 201510561982 A CN201510561982 A CN 201510561982A CN 105135450 A CN105135450 A CN 105135450A
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- tail gas
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Abstract
The invention discloses a tail gas treatment method for formaldehyde produced through a silver catalysis method. Tail gas exhausted above a second absorbing tower is conveyed into a water seal tank, then the tail gas passes a gas distributor and is conveyed into a combustion furnace to be combusted, generated vapor is conveyed into a steam pressure stabilizing tank and then enters a vapor distributor, and cyclic utilization is achieved. The method fully utilizes the characteristics that the content of H2 in the tail gas produced during production reaches 20% or so and vapor is generated when the H2 is directly combusted. By means of the method, harmful gas in H2, CO and CH4 is converted into heat energy, meanwhile, the generated vapor is cyclically used in production, waste is turned into wealth, and the environment is protected.
Description
Technical field
The present invention relates to a kind of production method of formaldehyde, particularly relate to a kind of silver-colored catalysis method and produce exhaust gas treating method in formaldehyde.
Background technology
The method of methanol production formaldehyde is utilized to mainly contain two kinds at present, wherein one is silver-colored catalysis method, and silver-colored catalysis method requires very high to reaction temperature, reaches 600 ~ 640 DEG C, but its main reaction 1 after firing temperature reaches 200 DEG C and can cease fire, maintain reaction by reaction releasing heat; And a large amount of side reactions in course of reaction, can be produced, these side reactions can produce H
2, CO, CH
4, the existing technique of gas that these side reactions produce is that it is emptying or sends into boiler combustion, and directly emptyingly discharged toxic gas, this mode is inadvisable, and directly send boiler combustion can produce a large amount of steam and CO
2, be also unfavorable for boiler safety and protection of the environment.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of silver-colored catalysis method realizing recycling and producing exhaust gas treating method in formaldehyde.
For achieving the above object, the technical solution adopted in the present invention is: a kind of silver-colored catalysis method produces exhaust gas treating method in formaldehyde, the tail gas of discharging above second absorption tower is sent into water sealed tank, then through gas distributor, feeding combustion furnace burns, the steam produced is sent into steam vacuum tank, then enters vapor distributor, realize recycling.
Advantageous Effects of the present invention is: due to H in the tail gas of generation in production
2amount reach about 20%, and its directly burning produces is steam, therefore, by this method not only by H
2, CO, CH
4in pernicious gas change into heat energy, the water steam simultaneously produced uses in production, turns waste into wealth, protection of the environment.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further elaborated.
A kind of silver-colored catalysis method produces exhaust gas treating method in formaldehyde, and the tail gas of discharging above second absorption tower is sent into water sealed tank, then through gas distributor, feeding combustion furnace burns, the steam produced is sent into steam vacuum tank, then enters vapor distributor, realize recycling.
Because in reaction, the effect of steam both can remove reaction heat, the aerial explosion limit of methyl alcohol can be expanded again simultaneously, play safety in production, control the effect of reaction temperature, therefore, steam is extremely important for production process, and the emptying or direct burning of original production technology all has problems, and is emptyingly discharged by pernicious gas, and the water vapour produced that directly burns can affect boiler safety, due to H in the tail gas of generation in production
2amount reach about 20%, and its directly burning produces is steam, therefore, by this method not only by H
2, CO, CH
4in pernicious gas change into heat energy, the water steam simultaneously produced uses in production.
Although give detailed description and explanation to the specific embodiment of the present invention above; but what should indicate is; we can carry out various equivalence according to conception of the present invention to above-mentioned embodiment and change and amendment; its function produced do not exceed that description contains yet spiritual time, all should within protection scope of the present invention.
Claims (1)
1. silver-colored catalysis method produces an exhaust gas treating method in formaldehyde, and the tail gas of discharging above second absorption tower is sent into water sealed tank, then through gas distributor, feeding combustion furnace burns, the steam produced is sent into steam vacuum tank, then enters vapor distributor, realize recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510561982.6A CN105135450A (en) | 2015-09-07 | 2015-09-07 | Tail gas treatment method for formaldehyde produced through silver catalysis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510561982.6A CN105135450A (en) | 2015-09-07 | 2015-09-07 | Tail gas treatment method for formaldehyde produced through silver catalysis method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105135450A true CN105135450A (en) | 2015-12-09 |
Family
ID=54720904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510561982.6A Pending CN105135450A (en) | 2015-09-07 | 2015-09-07 | Tail gas treatment method for formaldehyde produced through silver catalysis method |
Country Status (1)
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| CN (1) | CN105135450A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS444288A1 (en) * | 1988-11-01 | 1990-07-12 | Boris Ing Kudelas | Method of waste gas treatment from formaldehyde production |
| CN102320942A (en) * | 2011-06-14 | 2012-01-18 | 田宝峰 | Production process and device of formaldehyde |
| CN202203955U (en) * | 2011-08-01 | 2012-04-25 | 武陟县华宇油化有限公司 | Formaldehyde tail gas burner |
| CN202470078U (en) * | 2012-02-14 | 2012-10-03 | 湖北三江化工有限责任公司 | Energy-saving system using formaldehyde tail gas |
| CN202813396U (en) * | 2012-08-13 | 2013-03-20 | 陈晋祥 | Tail gas combustion furnace |
| CN204213941U (en) * | 2014-10-30 | 2015-03-18 | 沭阳县金辉化工有限公司 | Formaldehyde exhaust treatment system |
| CN104776441A (en) * | 2014-01-15 | 2015-07-15 | 天津市武清区福林化工工贸有限公司 | Formaldehyde tail gas recycling system |
-
2015
- 2015-09-07 CN CN201510561982.6A patent/CN105135450A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS444288A1 (en) * | 1988-11-01 | 1990-07-12 | Boris Ing Kudelas | Method of waste gas treatment from formaldehyde production |
| CN102320942A (en) * | 2011-06-14 | 2012-01-18 | 田宝峰 | Production process and device of formaldehyde |
| CN202203955U (en) * | 2011-08-01 | 2012-04-25 | 武陟县华宇油化有限公司 | Formaldehyde tail gas burner |
| CN202470078U (en) * | 2012-02-14 | 2012-10-03 | 湖北三江化工有限责任公司 | Energy-saving system using formaldehyde tail gas |
| CN202813396U (en) * | 2012-08-13 | 2013-03-20 | 陈晋祥 | Tail gas combustion furnace |
| CN104776441A (en) * | 2014-01-15 | 2015-07-15 | 天津市武清区福林化工工贸有限公司 | Formaldehyde tail gas recycling system |
| CN204213941U (en) * | 2014-10-30 | 2015-03-18 | 沭阳县金辉化工有限公司 | Formaldehyde exhaust treatment system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |
|
| RJ01 | Rejection of invention patent application after publication |