CN104675729A - Fan system with formaldehyde process gas circulation protecting device - Google Patents
Fan system with formaldehyde process gas circulation protecting device Download PDFInfo
- Publication number
- CN104675729A CN104675729A CN201510132429.0A CN201510132429A CN104675729A CN 104675729 A CN104675729 A CN 104675729A CN 201510132429 A CN201510132429 A CN 201510132429A CN 104675729 A CN104675729 A CN 104675729A
- Authority
- CN
- China
- Prior art keywords
- fan
- valve
- circulating
- outlet
- wind unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- 230000001681 protective effect Effects 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- 230000009191 jumping Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000012895 dilution Substances 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- AEWKYDHSUQKENZ-UHFFFAOYSA-N formaldehyde iron molybdenum Chemical compound C=O.[Mo].[Fe] AEWKYDHSUQKENZ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fan system with a formaldehyde process gas circulation protecting device. A first cutting-off valve is arranged at an inlet part of a pressurization fan, a second cutting-off valve is arranged at an outlet part of a circulation fan set, a safety valve is arranged in the circulation fan set, one end of the safety valve is communicated with an inlet of a first circulation fan, the other end of the safety valve is communicated with an outlet of the second circulation fan, nitrogen gas sequentially enters a protection valve and a check valve, and the check valve is simultaneously is communicated with the inlet of the first circulation fan and the outlet of the second circulation fan. The fan system has the advantages that the protecting device is added into the original fan system, in addition, a safe exhaust system is additionally arranged at the fan outlet, and the outlet overpressure caused by the inertial movement of the fan after the fan tripping is prevented.
Description
Technical field
The present invention relates to a kind of blower fan system producing formaldehyde, particularly a kind of blower fan system with gas recycling-guard device.
Background technique
At present, in iron molybdenum formaldehyde device production process, as occurred, power failure suddenly or blower fan system interlocking cause the phenomenon of the unexpected stop jumping of blower fan, the process gas of fan outlet carries pump circulation to become adverse current from original blower fan, inflammable and explosive gas backflow is to blower fan system, very easily form explosive mixture after the fresh air exported with pressure blower mixes, produce the security incidents such as detonation, blower fan system as shown in Figure 3.
Summary of the invention
The object of the invention is to overcome above deficiency, the blower fan system with formaldehyde process gas recycling-guard device that a kind of structure is simple, safe and reliable is provided.
Object of the present invention is achieved through the following technical solutions: a kind of blower fan system with formaldehyde process gas recycling-guard device, comprise pressure blower, air enters circulating wind unit after entering pressure blower, circulating wind unit comprises the first circulating fan and the second circulating fan, air and methyl alcohol enter conversion absorption system afterwards, described circulating wind unit is entered from a conversion absorption system circulation technology gas part out, another part enters exhaust treatment system and disposes laggard row exhaust emissions, in the inlet of pressure blower, the first cut-off valve is set, the outlet port of circulating wind unit arranges the second cut-off valve, safety valve is provided with in circulating wind unit, one end of safety valve communicates with the import of the first circulating fan, the other end of safety valve communicates with the outlet of the second circulating fan, nitrogen enters Protective valve and safety check successively, safety check communicates with the import of the first circulating fan and the outlet of the second circulating fan simultaneously.
The present invention compared with prior art has the following advantages: the present invention with the addition of protective gear in original blower fan system; this protective gear is the practical risk existed according to formaldehyde blower fan; in the import of pressure blower and the outlet of the second circulating fan, the first cut-off valve and the second cut-off valve are installed respectively; and the process gas that installation may be gone here and there in protecting nitrogen with dilution system between above-mentioned valve; and installed safe venting system additional at fan outlet, prevent the superpressure that may cause outlet in the inertia motion of blower fan stop jumping rear fan.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
The graph of a relation of Fig. 2 methyl alcohol and oxygen content;
Fig. 3 is the structural representation of blower fan system of the prior art;
Number in the figure: 1-pressure blower, 2-first circulating fan, 3-second circulating fan, 4-transform absorption system, 5-exhaust treatment system, 6-first cut-off valve, 7-second cut-off valve, 8-safety valve, 9-Protective valve, 10-safety check.
embodiment:
in order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
As Fig. 1 shows a kind of mode of execution that the present invention has the blower fan system of formaldehyde process gas recycling-guard device, comprise pressure blower 1, air enters circulating wind unit after entering pressure blower 1, circulating wind unit comprises the first circulating fan 2 and the second circulating fan 3, air and methyl alcohol enter and transform absorption system 4 afterwards, circulating wind unit is entered from a conversion absorption system 4 circulation technology gas part out, another part enters exhaust treatment system 5 and disposes laggard row exhaust emissions, in the inlet of pressure blower 1, the first cut-off valve 6 is set, the outlet port of circulating wind unit arranges the second cut-off valve 7, safety valve 8 is provided with in circulating wind unit, one end of safety valve 8 communicates with the import of the first circulating fan 2, the other end of safety valve 8 communicates with the outlet of the second circulating fan 3, nitrogen enters Protective valve 9 and safety check 10 successively, safety check 10 communicates with the import of the first circulating fan 2 and the outlet of the second circulating fan 3 simultaneously.
After second circulating fan 3 outlet adds methyl alcohol, process gas main component is (molar percentage): nitrogen 76.77%, oxygen 9.9%, methyl alcohol 10%, carbon monoxide: 0.83%, dimethyl ether 0.21%, water: 2.27%, methyl alcohol is flammable and explosive substance, but under lower oxygen content, can not form explosive mixture, the relation of methyl alcohol and oxygen content is as Fig. 2.
When blower fan normally runs, first cut-off valve 6 and the second cut-off valve 7 are all in open mode, Protective valve 9 is in closed condition, when there is abnormal stop jumping in blower fan system, first cut-off valve 6 and the second cut-off valve 7, Protective valve 9 starts interlocking simultaneously, first cut-off valve 6 and the second cut-off valve 7 are closed, cut off air enter pressure blower system and prevent process gas refluence phenomenon, Protective valve 9 is opened and is carried out nitrogen filled protection to blower fan system simultaneously, the process gas may gone here and there in dilution system, the inertia motion of closing rear fan in order to the first cut-off valve 6 after preventing blower fan stop jumping and the second cut-off valve 7 likely causes the superpressure of fan outlet, safe venting system has been installed additional at fan outlet, to protect blower fan system.
The present invention with the addition of protective gear in original blower fan system; this protective gear is the practical risk existed according to formaldehyde blower fan; in the import of pressure blower 1 and the outlet of the second circulating fan 3, first cut-off valve 6 and the second cut-off valve 7 is installed respectively; and the process gas that installation may be gone here and there in protecting nitrogen with dilution system between above-mentioned valve; and installed safe venting system additional at fan outlet, prevent the superpressure that may cause outlet in the inertia motion of blower fan stop jumping rear fan.
Claims (1)
1. one kind has the blower fan system of formaldehyde process gas recycling-guard device, comprise pressure blower (1), air enters circulating wind unit after entering pressure blower (1), circulating wind unit comprises the first circulating fan (2) and the second circulating fan (3), air and methyl alcohol enter and transform absorption system (4) afterwards, described circulating wind unit is entered from described conversion absorption system (4) circulation technology gas part out, another part enters exhaust treatment system (5) and disposes laggard row exhaust emissions, it is characterized in that: in the inlet of described pressure blower (1), the first cut-off valve (6) is set, the outlet port of described circulating wind unit arranges the second cut-off valve (7), safety valve (8) is provided with in described circulating wind unit, one end of described safety valve (8) communicates with the import of the first circulating fan (2), the other end of described safety valve (8) communicates with the outlet of the second circulating fan (3), nitrogen enters Protective valve (9) and safety check (10) successively, described safety check (10) communicates with the import of described first circulating fan (2) and the outlet of described second circulating fan (3) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132429.0A CN104675729A (en) | 2015-03-25 | 2015-03-25 | Fan system with formaldehyde process gas circulation protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132429.0A CN104675729A (en) | 2015-03-25 | 2015-03-25 | Fan system with formaldehyde process gas circulation protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104675729A true CN104675729A (en) | 2015-06-03 |
Family
ID=53311195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510132429.0A Pending CN104675729A (en) | 2015-03-25 | 2015-03-25 | Fan system with formaldehyde process gas circulation protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104675729A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566080A (en) * | 2015-12-11 | 2016-05-11 | 四川天华富邦化工有限责任公司 | Iron-molybdenum formaldehyde production method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203190560U (en) * | 2013-03-21 | 2013-09-11 | 卢孟龙 | Fire fighting air supply system |
| CN203768268U (en) * | 2014-04-11 | 2014-08-13 | 南通江天化学品有限公司 | Circulating air supply device for production of formaldehyde |
| CN104214123A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Linkage control device and method for double compressors |
| CN204511933U (en) * | 2015-03-25 | 2015-07-29 | 南通江天化学股份有限公司 | There is the blower fan system of formaldehyde process gas recycling-guard device |
-
2015
- 2015-03-25 CN CN201510132429.0A patent/CN104675729A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203190560U (en) * | 2013-03-21 | 2013-09-11 | 卢孟龙 | Fire fighting air supply system |
| CN104214123A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Linkage control device and method for double compressors |
| CN203768268U (en) * | 2014-04-11 | 2014-08-13 | 南通江天化学品有限公司 | Circulating air supply device for production of formaldehyde |
| CN204511933U (en) * | 2015-03-25 | 2015-07-29 | 南通江天化学股份有限公司 | There is the blower fan system of formaldehyde process gas recycling-guard device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566080A (en) * | 2015-12-11 | 2016-05-11 | 四川天华富邦化工有限责任公司 | Iron-molybdenum formaldehyde production method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150603 |
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| RJ01 | Rejection of invention patent application after publication |