CN201751409U - Stack gas circulating device - Google Patents
Stack gas circulating device Download PDFInfo
- Publication number
- CN201751409U CN201751409U CN201020287702XU CN201020287702U CN201751409U CN 201751409 U CN201751409 U CN 201751409U CN 201020287702X U CN201020287702X U CN 201020287702XU CN 201020287702 U CN201020287702 U CN 201020287702U CN 201751409 U CN201751409 U CN 201751409U
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- gas
- air outlet
- equipment
- methylene oxide
- stack
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Abstract
The utility model relates to the technique field of methylene oxide producing equipment, especially to a stack gas circulating device for producing methylene oxide in the methylene oxide producing equipment. The stack gas circulating device includes a water scrubber arranged on an air outlet of an exhaust gas treating device arranged on the tail end of the methylene oxide equipment, the top end of the water scrubber is connected with a gas-liquid separator, an air outlet of the gas-liquid separator is provided with a gas pipeline for supplying gas to a mixer of the methylene oxide equipment, the gas pipeline is connected with a circulating blower, and a preheater is arranged on an air outlet side of the circulating blower. The stack gas circulating device is capable of reducing consumption of methanol and improving operational safety, and has a great yield and high methylene oxide concentration.
Description
Technical field
The utility model relates to the Formaldehyde Production equipment technical field, especially a kind of stack gas circulation device that is used for Formaldehyde Production.
Background technology
Present formaldehyde more than 90% gets from methanol oxidation, also has from hydro carbons direct oxidation or dme oxidation and produces.With methyl alcohol is the method for raw material production formaldehyde, is divided into " silver-colored method " and " iron molybdenum method ".Compare with iron molybdenum method, silver-colored method less investment, technical process is simple.And iron molybdenum method flow process complexity, investment are big, power consumption height and product formic acid content are high.Therefore, domestic most of formaldehyde plant adopts silver-colored method.Domestic silver-colored legal system formaldehyde, in nearly 20 years history, experienced by of the progress of float stone silver catalyst to catalyst for electrolytic silver, experienced the progress that waste heat boiler and tail gas boiler grow out of nothing, experienced the progress of horizontalboiler, experienced vaporizer and be heated to the progress of heating by water vapor by hot water or hot formaldehyde to vertical boilers.Formaldehyde Production equipment commonly used at present, its final tail gas that produces directly is disposed to atmosphere, causes vent gas to utilize again, makes the consumption of feed proportioning steam increase greatly.
The utility model content
The technical problems to be solved in the utility model is: shortcoming and deficiency in order to solve above-mentioned existence, a kind of stack gas circulation device that is used for Formaldehyde Production is provided, and the tail gas recycle of part economizes on resources.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of stack gas circulation device, be used for Formaldehyde Production equipment, water wash column with the exhaust gas processing device air outlet that is arranged on formaldehyde equipment tail end, the top of water wash column is connected with gas-liquid separator, the place, air outlet of gas-liquid separator is provided with gas is sent into the gas pipeline in the mixing tank on the formaldehyde equipment, is connected with recycle blower on the gas pipeline.Provide stack gas by circulation device for Formaldehyde Production equipment, reduce the consumption of batching steam, improve output.
Further, the recycle blower air outlet side on the described gas pipeline also is provided with preheater.
The beneficial effects of the utility model are that stack gas circulation device of the present utility model reduces the methyl alcohol unit consumption, improve processing safety, and output is big, concentration of formaldehyde is high.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Among the figure 1, water wash column, 2, gas-liquid separator, 3, gas pipeline, 4, recycle blower, 5, preheater.
Embodiment
In conjunction with the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
The stack gas circulation device of preferred forms as shown in Figure 1, be used for Formaldehyde Production equipment, water wash column 1 with the exhaust gas processing device air outlet that is arranged on formaldehyde equipment tail end, the top of water wash column 1 is connected with gas-liquid separator 2, the place, air outlet of gas-liquid separator 2 is provided with gas is sent into the gas pipeline in the mixing tank 3 on the formaldehyde equipment, be connected with recycle blower 4 on the gas pipeline 3, recycle blower 4 air outlet sides on the gas pipeline 3 also are provided with preheater 5.
Methyl alcohol, airborne oxygen, enter the oxidizer internal reaction after mixing in the mixing tank of formaldehyde equipment from the batching steam of formaldehyde device systems and stack gas, the gas mixture that contains formaldehyde after the reaction enters the absorption tower and absorbs, the nonabsorbable tail gas that top of tower produces after absorbing is delivered to exhaust gas processing device and is burned the recovery heat, be used to produce steam, and a discharging gas part of burning the back generation enters water wash column 1, and all the other directly discharge atmosphere.The discharging gas that enters in the water wash column 1 is removed solid particulate such as dust, purified the gas in it, owing in water wash column 1 interior effluent air, have liquid, so discharging gas enters gas pipeline 3 and uses as stack gas through entering gas after gas-liquid separator 2 separates behind the water wash column 1, by the recycle blower 4 that is connected on the pipeline stack gas is blasted in the preheater 5, the stack gas after the preheating directly enters in the mixing tank and uses.The effect of stack gas is similar with batching steam, can remove reaction heat, increases stack gas and can reduce the batching steam consumption in mixing tank.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification sheets, must determine its technical scope according to the claim scope.
Claims (2)
1. stack gas circulation device, be used for Formaldehyde Production equipment, it is characterized in that: water wash column (1) with the exhaust gas processing device air outlet that is arranged on formaldehyde equipment tail end, the top of water wash column (1) is connected with gas-liquid separator (2), the place, air outlet of gas-liquid separator (2) is provided with gas is sent into the gas pipeline in the mixing tank (3) on the formaldehyde equipment, is connected with recycle blower (4) on the gas pipeline (3).
2. stack gas circulation device according to claim 1 is characterized in that: recycle blower (4) air outlet side on the described gas pipeline (3) also is provided with preheater (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020287702XU CN201751409U (en) | 2010-08-09 | 2010-08-09 | Stack gas circulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020287702XU CN201751409U (en) | 2010-08-09 | 2010-08-09 | Stack gas circulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201751409U true CN201751409U (en) | 2011-02-23 |
Family
ID=43601815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020287702XU Expired - Lifetime CN201751409U (en) | 2010-08-09 | 2010-08-09 | Stack gas circulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201751409U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372616A (en) * | 2010-08-09 | 2012-03-14 | 江苏恒茂机械制造有限公司 | Flue gas circulation process and apparatus |
-
2010
- 2010-08-09 CN CN201020287702XU patent/CN201751409U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372616A (en) * | 2010-08-09 | 2012-03-14 | 江苏恒茂机械制造有限公司 | Flue gas circulation process and apparatus |
| CN102372616B (en) * | 2010-08-09 | 2014-06-18 | 江苏凯茂石化科技有限公司 | Flue gas circulation process and apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU KAIMAO CHEMICAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: JIANGSU HENGMAO MACHINERY MANUFACTURE CO., LTD. Effective date: 20140429 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 213169 CHANGZHOU, JIANGSU PROVINCE TO: 214000 WUXI, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140429 Address after: Xuelang Street Ge Dai Binhu District of Jiangsu Province in 214000 communities in Wuxi City Patentee after: Jiangsu Kaimao Chemical Technology Co., Ltd. Address before: 213169, Jiangsu province Changzhou city Wujin District snow town industrial concentration area Patentee before: Jiangsu Hengmao Machine Manufacture Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20180904 Address after: 214000 Jinxi Road, Wuxi City, Jiangsu Province, No. 100 Patentee after: WUXI ZHIGUI TECHNOLOGY CO., LTD. Address before: 214000 Jiangsu Wuxi Binhu District Xuelang street Gudai community Patentee before: Jiangsu Kaimao Chemical Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110223 |
|
| CX01 | Expiry of patent term |