CN203947049U - A kind of device of preparing formaldehyde - Google Patents
A kind of device of preparing formaldehyde Download PDFInfo
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- CN203947049U CN203947049U CN201420377839.2U CN201420377839U CN203947049U CN 203947049 U CN203947049 U CN 203947049U CN 201420377839 U CN201420377839 U CN 201420377839U CN 203947049 U CN203947049 U CN 203947049U
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- outlet
- aldehyde
- formaldehyde
- entrance
- alcohol
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 469
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 134
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 238000011084 recovery Methods 0.000 claims abstract description 19
- 239000002562 thickening agent Substances 0.000 claims abstract description 13
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 6
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims abstract 83
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 153
- 238000005406 washing Methods 0.000 claims description 114
- 239000002912 waste gas Substances 0.000 claims description 69
- 239000007788 liquid Substances 0.000 claims description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- 239000007789 gas Substances 0.000 claims description 37
- 238000002156 mixing Methods 0.000 claims description 31
- 239000003595 mist Substances 0.000 claims description 24
- 238000009833 condensation Methods 0.000 claims description 23
- 230000005494 condensation Effects 0.000 claims description 23
- 239000002699 waste material Substances 0.000 claims description 17
- 239000010808 liquid waste Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 150000001299 aldehydes Chemical class 0.000 description 199
- 238000010586 diagram Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 6
- 239000006210 lotion Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000012043 crude product Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- OOSUHIIJYDMCCW-UHFFFAOYSA-N cyanamide;formaldehyde Chemical compound O=C.NC#N OOSUHIIJYDMCCW-UHFFFAOYSA-N 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- -1 pharmacy Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000003206 sterilizing agent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Treating Waste Gases (AREA)
Abstract
The application provides a kind of device of preparing formaldehyde, comprises formaldehyde reaction device, formaldehyde absorbing tower, formaldehyde knockout tower and formaldehyde thickener; Formaldehyde reaction device is provided with mixed gas opening for feed and thick aldehyde discharge port, formaldehyde absorbing tower is provided with thick aldehyde opening for feed and bottom formaldehyde discharge port, formaldehyde knockout tower is provided with containing alcohol formaldehyde entrance and the outlet of smart aldehyde, and formaldehyde thickener is provided with smart aldehyde entrance and the outlet of dense aldehyde; Mixed gas opening for feed is connected with material feeding tube road, and thick aldehyde discharge port is connected with thick aldehyde opening for feed, bottom formaldehyde discharge port with contain alcohol formaldehyde entrance and be connected, smart aldehyde exports and is connected with smart aldehyde entrance, dense aldehyde exports and is connected with dense aldehyde groove; The bottom of formaldehyde reaction device is provided with heat recovery boiler, and bottom formaldehyde discharge port and containing being provided with formaldehyde filter between alcohol formaldehyde entrance is provided with smart aldehyde well heater between smart aldehyde outlet and smart aldehyde entrance.The device that uses the application to provide, can, effectively compared with less energy-consumption, improve product purity.
Description
Technical field
The utility model relates to chemical field, in particular to a kind of device of preparing formaldehyde.
Background technology
Pure formaldehyde is the colourless gas with irritating smell, and its boiling point is-19 DEG C, can be explosion gas with air and oxygen mix.Easy firing, the water-soluble and alcohol of energy, is slightly soluble in acetone, benzene and ether.Formaldehyde gas, under high pressure and low temperature, can be liquefied as colourless liquid, is all conventionally to sell with the aqueous solution, and 35%～40% formalin is called as formalin.Weighed very important synthesis material formaldehyde or modern age chemical industrial one, be applied to the synthetic of urea-formaldehyde resin and trimeric cyanamide-formaldehyde resin, still sterilizing agent and sanitas pharmaceutically of formaldehyde, formaldehyde is also for tensio-active agent, plastics, rubber, tanning, papermaking, dyestuff, pharmacy, agricultural chemicals, photographic film, explosive, material of construction and sterilization, stifling and anticorrosion process.
Polymethoxy dimethyl ether is paid attention to by countries in the world as the applied research of diesel oil additive, is considered to novel clean energy, and formaldehyde is the important material of producing polymethoxy dimethyl ether.
The technique of current production formaldehyde is comparatively ripe, and it is relatively good that the use of silver-colored catalyst catalyzer is all done, but still exist, energy consumption is large, material consumption is high, and carbon monoxide and CO2 emissions are large, and productive rate awaits the problems such as raising.
Utility model content
The purpose of this utility model is to provide a kind of device of preparing formaldehyde, to solve the above problems.
The application provides a kind of device of preparing formaldehyde, comprises formaldehyde reaction device, formaldehyde absorbing tower, formaldehyde knockout tower and formaldehyde thickener; Described formaldehyde reaction device is provided with mixed gas opening for feed and thick aldehyde discharge port, described formaldehyde absorbing tower is provided with thick aldehyde opening for feed and bottom formaldehyde discharge port, described formaldehyde knockout tower is provided with containing alcohol formaldehyde entrance and the outlet of smart aldehyde, and described formaldehyde thickener is provided with smart aldehyde entrance and the outlet of dense aldehyde; Described mixed gas opening for feed is connected with material feeding tube road, described thick aldehyde discharge port is connected with described thick aldehyde opening for feed, described bottom formaldehyde discharge port is connected containing alcohol formaldehyde entrance with described, and described smart aldehyde outlet is connected with described smart aldehyde entrance, and described dense aldehyde outlet is connected with dense aldehyde groove; The bottom of described formaldehyde reaction device is provided with heat recovery boiler, and described bottom formaldehyde discharge port and described containing between alcohol formaldehyde entrance are provided with formaldehyde filter, and described smart aldehyde exports between described smart aldehyde entrance and is provided with smart aldehyde well heater.
Preferably, this device also comprises mixing tank, mixing tank strainer and flame damper, and described mixing tank, described mixing tank strainer and described flame damper are successively set on described material feeding tube road, and the outlet of described flame damper is connected with described mixed gas opening for feed.
Preferably, this device also comprises methanol evaporator, air preheater, waste gas mist eliminator and steam mist eliminator; Described mixing tank is provided with methanol inlet, gas inlet, waste gas recovery entrance and steam-in; Described methanol inlet is connected with the outlet of described methanol evaporator, described gas inlet is connected with the outlet of described air preheater, described waste gas reclaims entrance and is connected with the outlet of described waste gas mist eliminator, described steam-in is connected with the outlet of described steam mist eliminator, and the entrance of described steam mist eliminator is connected with steam feed pipeline; Described formaldehyde absorbing tower is also provided with top waste gas outlet, and described top waste gas outlet is connected with the entrance of described waste gas mist eliminator.
Preferably, this device also comprises methyl alcohol well heater and air filter; Described methanol evaporator is provided with liquid circulation outlet and gas inlet, described methyl alcohol well heater is arranged on the methanol feeding pipeline being connected with described gas inlet, on methanol feeding pipeline before the entrance of described methyl alcohol well heater, be provided with circulation feed back bifurcations, described liquid circulation outlet is connected with described circulation feed back bifurcations; The outlet of described air filter is connected with the entrance of described air preheater.
Preferably, the described formaldehyde absorbing tower of this device is provided with overflow weir, overflow feedback outlet and thick aldehyde feedback outlet, and described formaldehyde filter and described containing between alcohol formaldehyde entrance are provided with thick aldehyde feed back branch outlet; Described overflow weir is connected with described overflow feedback outlet, is provided with the thick aldehyde water cooler of overflow between described overflow weir and described overflow feedback outlet; Described thick aldehyde feedback outlet is connected with described thick aldehyde feed back branch outlet, is provided with the thick aldehyde water cooler that refluxes between described thick aldehyde feedback outlet and described thick aldehyde feed back branch outlet.
Preferably, between the thick aldehyde water cooler of described overflow weir and described overflow, be provided with waste gas condensation liquid feedback outlet; Described waste gas mist eliminator is provided with the outlet of waste gas condensation liquid; Described waste gas condensation liquid outlet is connected with described waste gas condensation liquid feedback outlet, between described waste gas condensation liquid outlet and described waste gas condensation liquid feedback outlet, is provided with phlegma storage tank.
Preferably, described formaldehyde knockout tower is also provided with except alcohol circulation feedback outlet; Between described smart aldehyde outlet and described smart aldehyde well heater, be provided with except alcohol circulation feed back bifurcations; Describedly is connected except alcohol circulation feedback outlet with described except alcohol circulation feed back bifurcations, describedly removes alcohol circulation feed back bifurcations and described removing between alcohol circulation feedback outlet is provided with except alcohol reboiler.
Preferably, this device also comprises except alcohol condenser, except alcohol water cooler, except alcohol tower groove, except alcohol washing tower and rare aldehyde water cooler; Described formaldehyde knockout tower is also provided with top discharge mouth; Described except alcohol washing tower is provided with washing entrance, washings exports and washings circulation feedback outlet; Described top discharge mouth is connected with the described entrance except alcohol condenser, the described outlet except alcohol condenser is connected with the described entrance except alcohol water cooler, the described outlet except alcohol water cooler is connected with the described entrance except alcohol tower groove, the described outlet except alcohol tower groove is connected with described washing entrance, and described washings outlet is connected with thick alcohol discharging pipeline; On described thick alcohol discharging pipeline, be provided with washings loop branches mouth, after described washings loop branches mouth is connected with described rare aldehyde water cooler, be connected with washings circulation feedback outlet; The described alcohol tower groove that removes is also provided with recovery outlet, and described formaldehyde knockout tower is also provided with recovery entrance and is connected with described recovery outlet.
Preferably, the described alcohol washing tower that removes is also provided with top dehumidifying outlet; The dehumidifying outlet of described top is connected except alcohol moisture trap, secondary remove alcohol moisture trap in turn with one-level successively, and described one-level reclaims outlet and pneumatic outlet except alcohol moisture trap is provided with circulation, and described secondary removes alcohol moisture trap and is provided with waste gas outlet and waste liquid outlet; Between the described outlet except alcohol tower groove and washing entrance, be provided with except alcohol dehumidifying return branch mouth, described circulation is reclaimed outlet and is connected with the described alcohol dehumidifying return branch mouth that removes, described pneumatic outlet is connected with the entrance that described secondary removes alcohol moisture trap, described waste gas outlet is connected with flare system, and described waste liquid outlet is connected with liquid waste treatment system.
Preferably, this device also comprises rare aldehyde condenser, rare aldehyde washing tower, the rare aldehyde moisture trap of one-level, the rare aldehyde moisture trap of secondary, second rare aldehyde water cooler and rare aldehyde dashpot; Described formaldehyde thickener is also provided with the rare aldehyde outlet in top, and the rare aldehyde outlet in described top is connected with the entrance of described rare aldehyde condenser, and the outlet of described rare aldehyde condenser is connected with described rare aldehyde dashpot; Described rare aldehyde condenser is also provided with rare aldehyde washing branch outlet, and described rare aldehyde washing tower is provided with rare aldehyde washing entrance, the rare aldehyde outlet in bottom, top mixed export and rare aldehyde cycles of washing feedback outlet; Described rare aldehyde washing branch outlet is connected with described rare aldehyde washing entrance, and described top mixed export is connected in turn with the rare aldehyde moisture trap of described one-level, the rare aldehyde moisture trap of described secondary; Between described rare aldehyde washing branch outlet and described rare aldehyde washing entrance, be provided with the rare aldehyde moisture trap of one-level liquid return bifurcations, between the entrance of the outlet of described rare aldehyde condenser and described rare aldehyde dashpot, be provided with the rare aldehyde of washing and store bifurcations, the rare aldehyde outlet in described bottom stores bifurcations with the rare aldehyde of described washing and is connected; The rare aldehyde moisture trap of described one-level is also provided with liquid exit, and described liquid exit is connected with the rare aldehyde moisture trap of described one-level liquid return bifurcations; The rare aldehyde outlet in described bottom and the rare aldehyde of described washing store between bifurcations and are provided with rare aldehyde cycles of washing bifurcations, and described rare aldehyde cycles of washing bifurcations is connected with described rare aldehyde cycles of washing feedback outlet after being connected with described second rare aldehyde water cooler again; The rare aldehyde moisture trap of described secondary is also provided with rare aldehyde waste gas outlet and rare aldehyde waste liquid outlet, and described rare aldehyde waste gas outlet is connected with flare system, and described rare aldehyde waste liquid outlet is connected with liquid waste treatment system.
By the device of preparing formaldehyde that uses the application to provide, the beneficial effect that can obtain has: the first, and the use of heat recovery boiler, utilizes and reacts the heat of emitting fully, reduces the energy consumption level of whole device; The second, the use of mixing tank, effectively controls the ratio of various materials, and material is fully mixed, and improves the transformation efficiency of reaction and the utilization ratio of material, reduces the consumption of material simultaneously; The 3rd, the recycle of material, has also improved the transformation efficiency of reaction and the utilization ratio of material; The 4th, except alcohol device can effectively reclaim methyl alcohol, reduce material waste; The 5th, the use of moisture trap and waste gas and waste liquid system can reduce the discharge of tail gas sewage, reduces environmental pollution.
Brief description of the drawings
The schematic diagram of a kind of device of preparing formaldehyde that Fig. 1 provides for the utility model embodiment;
The schematic diagram (having increased the device such as mixing tank, mixing tank strainer) of a kind of device of preparing formaldehyde that Fig. 2 provides for the utility model embodiment;
The schematic diagram of a kind of device of preparing formaldehyde that Fig. 3 provides for the utility model embodiment (increased the thick aldehyde water cooler of overflow, the devices such as thick aldehyde water cooler reflux);
The schematic diagram (having increased except alcohol condenser, except alcohol water cooler, except devices such as alcohol tower grooves) of a kind of device of preparing formaldehyde that Fig. 4 provides for the utility model embodiment;
The schematic diagram (having increased the devices such as rare aldehyde condenser, rare aldehyde washing tower, the rare aldehyde moisture trap of one-level, the rare aldehyde moisture trap of secondary) of a kind of device of preparing formaldehyde that Fig. 5 provides for the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples, the application is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the application, but not restriction to the application.
The schematic diagram of a kind of device of preparing formaldehyde that Fig. 1 provides for the utility model embodiment.
The device of preparing formaldehyde as shown in Figure 1, comprises formaldehyde reaction device 1, formaldehyde absorbing tower 2, formaldehyde knockout tower 3 and formaldehyde thickener 4; Formaldehyde reaction device 1 is provided with mixed gas opening for feed 10 and thick aldehyde discharge port 11, formaldehyde absorbing tower 2 is provided with thick aldehyde opening for feed 20 and bottom formaldehyde discharge port 21, formaldehyde knockout tower 3 is provided with containing alcohol formaldehyde entrance 30 and smart aldehyde outlet 31, and formaldehyde thickener 4 is provided with smart aldehyde entrance 40 and dense aldehyde outlet 41; Mixed gas opening for feed 10 is connected with material feeding tube road 12, thick aldehyde discharge port 11 is connected with thick aldehyde opening for feed 20, bottom formaldehyde discharge port 21 be connected containing alcohol formaldehyde entrance 30, smart aldehyde outlet 31 is connected with smart aldehyde entrance 40, dense aldehyde exports 41 and is connected with dense aldehyde groove 42; The bottom of formaldehyde reaction device 1 is provided with heat recovery boiler 13, and bottom formaldehyde discharge port 21 and containing being provided with formaldehyde filter 32 between alcohol formaldehyde entrance 30 is provided with smart aldehyde well heater 43 between smart aldehyde outlet 31 and smart aldehyde entrance 40.
The materials such as warm air, methanol vapor, water vapor are carried by material feeding tube road 12 and are passed through mixed gas opening for feed 10 and enter in formaldehyde reaction device 1, and after reaction for some time, crude product is exported through thick aldehyde discharge port 11.Be arranged on the heat recovery boiler 13 of formaldehyde reaction device 1 bottom periphery, the heat recovery and utilization that reaction can be discharged, to reduce the energy consumption of whole production technique.
Crude product is after thick aldehyde discharge port 11 outputs, enter in formaldehyde absorbing tower 2 through thick aldehyde opening for feed 20 again, after completing circulated sprinkling absorb in formaldehyde absorbing tower 2, through bottom formaldehyde discharge port 21, formaldehyde filter 32 with enter formaldehyde knockout tower 3 containing alcohol formaldehyde entrance 30 and remove alcohol processing.
Complete except after alcohol processing, material, through smart aldehyde outlet 31 outputs, after the interior heating of smart aldehyde well heater 43, enters formaldehyde thickener 4 through smart aldehyde entrance 40 and carries out concentration, then exports and enter the interior storage of dense aldehyde groove 42 through dense aldehyde outlet 41.
The reaction of preparing formaldehyde is thermopositive reaction, in heat recovery boiler 13, is connected with cool circulation water, the flow of controlled circulation water, reaction is remained at a suitable temperature, unnecessary heat is recycled water and absorbs, and recirculated water is imported to other positions of whole system, reduces the energy consumption of whole device.
The schematic diagram (having increased the device such as mixing tank, mixing tank strainer) of a kind of device of preparing formaldehyde that Fig. 2 provides for the utility model embodiment.
The device of preparing formaldehyde as shown in Figure 2, one preferred embodiment in, this device also comprises mixing tank 5, mixing tank strainer 51 and flame damper 52, mixing tank 5, mixing tank strainer 51 and flame damper 52 are successively set on material feeding tube road 12, and the outlet of flame damper 52 is connected with mixed gas opening for feed 10.
Raw material enters mixing tank strainer 51 after the interior abundant mixing of mixing tank 5, removes after a small amount of solid impurity, enters and in formaldehyde reaction device 1, carries out catalyzed reaction through flame damper 52 and mixed gas opening for feed 10.
One more preferred embodiment in, this device also comprises methanol evaporator 53, air preheater 54, waste gas mist eliminator 55 and steam mist eliminator 56; Mixing tank 5 is provided with methanol inlet 501, gas inlet 502, waste gas recovery entrance 503 and steam-in 504; Methanol inlet 501 is connected with the outlet 5301 of methanol evaporator 53, gas inlet 502 is connected with the outlet of air preheater 54, waste gas reclaims entrance 503 and is connected with the outlet of waste gas mist eliminator 55, steam-in 504 is connected with the outlet of steam mist eliminator 56, and the entrance of steam mist eliminator 56 is connected with steam feed pipeline 505; Formaldehyde absorbing tower 2 is also provided with top waste gas outlet 22, and top waste gas outlet 22 is connected with the entrance of waste gas mist eliminator 55.
Another preferred embodiment in, this device also comprises methyl alcohol well heater 57 and air filter 58; Methanol evaporator 53 is provided with liquid circulation outlet 506 and gas inlet 507, methyl alcohol well heater 57 is arranged on the methanol feeding pipeline 59 being connected with gas inlet 507, on methanol feeding pipeline 59 before the entrance of methyl alcohol well heater 57, be provided with circulation feed back bifurcations 508, liquid circulation outlet 506 is connected with circulation feed back bifurcations 508; The outlet of air filter 58 is connected with the entrance of air preheater 54.
The four strands of materials that mainly contain that enter mixing tank 5 are respectively methanol vapor, air, hot water and steam and recovery waste gas.
Methanol vapor: liquid methyl alcohol enters methyl alcohol well heater 57 by methanol feeding pipeline 59 and heats, then in methanol evaporator 53, gasify and control the methyl alcohol atmospheric pressure of 0.5MPa, after being exported by the outlet 5301 of methanol evaporator 53, then enter mixing tank 5 through methanol inlet 501.Part methyl alcohol is got back to methanol feeding pipeline 59 through liquid circulation outlet 506 and circulation feed back bifurcations 508, enters methanol evaporator 53 and gasifies through methyl alcohol well heater 57, gas inlet 507.
Air: air is removed after solid impurity via air filter 58, then send into air preheater 54 and be heated to 110 degrees Celsius, then enter mixing tank 5 through gas inlet 502.The amount visual response situation of the amount of air and methyl alcohol maintains a suitable ratio (as A/M---1.8～1.9).
Hot water and steam: steam is entered after steam mist eliminator 56 dehumidifies and entered mixing tank 5 through steam-in 504 again by steam feed pipeline 505.Its flow and methyl alcohol throughput ratio are generally S/M---0.5～0.6.
Reclaim waste gas: the tail gas that formaldehyde absorbing tower 2 discharges reclaims entrance 503 through waste gas again and enters mixing tank 5 after top waste gas outlet 22 enters 55 dehumidifying of waste gas mist eliminator.
Above-mentioned methanol vapor, air, hot steam, recovery waste gas, after mixing tank 5 mixes, enter mixing tank strainer 51.Mixture temperature will, more than 88 degrees Celsius, to prevent that condensation from producing, reduce filter effect and change gaseous state composition.Gas mixture enters formaldehyde reaction device 1 by flame damper 52 after mixer filter 51 filters again.
When gas mixture enters after formaldehyde reaction device 1, under the katalysis of silver-colored catalyst, fierce exothermic oxidation reaction will be produced.The response behaviour that maintains safe and efficient rate needs four kinds of inlet amounies maintain a specific ratio, to maintain 660 degrees Celsius of best temperature of reaction.Temperature of reaction is controlled its oxidizing reaction by controlling air flow quantity.
The use of mixing tank can effectively improve the utilization ratio of each material, and reducing the loss of material and the side reaction that cause because of mismate increases, and improves productive rate, reduces material consumption level.
The schematic diagram of a kind of device of preparing formaldehyde that Fig. 3 provides for the utility model embodiment (increased the thick aldehyde water cooler of overflow, the devices such as thick aldehyde water cooler reflux).
The device of preparing formaldehyde as shown in Figure 3, one preferred embodiment in, the formaldehyde absorbing tower 2 of this device is provided with overflow weir 23, overflow feedback outlet 24 and thick aldehyde feedback outlet 25, and formaldehyde filter 32 is provided with thick aldehyde feed back branch outlet 26 with containing between alcohol formaldehyde entrance 30; Overflow weir 23 is connected with overflow feedback outlet 24, is provided with the thick aldehyde water cooler 27 of overflow between overflow weir 23 and overflow feedback outlet 24; Thick aldehyde feedback outlet 25 is connected with thick aldehyde feed back branch outlet 26, between thick aldehyde feedback outlet 25 and thick aldehyde feed back branch outlet 26, is provided with the thick aldehyde water cooler 28 that refluxes.
Crude product enters after formaldehyde absorbing tower 2 through thick aldehyde opening for feed 20, column bottom temperature is controlled at 60～65 degrees Celsius, after at the bottom of tower, thick aldehyde is filtered by formaldehyde filter 32, a thick aldehyde recycle pump can be preferably set, through thick aldehyde feed back branch outlet 26, material is pumped into the thick aldehyde water cooler 28 that refluxes, after cooling, send formaldehyde absorbing tower (C-120) back to through thick aldehyde feedback outlet 25 again, form circulating cooling and absorb.
In formaldehyde absorbing tower 2 towers, be provided with overflow weir 23, a middle aldehyde recycle pump can be preferably set, middle aldehyde is pumped into after the thick aldehyde water cooler 27 of overflow and enters formaldehyde absorbing tower 2 through overflow feedback outlet 24 again, thereby in forming, aldehyde circulating cooling absorbs.The middle aldehyde increasing flows into the lower circulation of formaldehyde absorbing tower 2 through overflow weir 23.This section of circulation fluid temperature is controlled at 38 degrees Celsius and is advisable below.
Another preferred embodiment in, between the thick aldehyde water cooler 27 of overflow weir 23 and overflow, be provided with waste gas condensation liquid feedback outlet 29; Waste gas mist eliminator 55 is provided with waste gas condensation liquid outlet 551; Waste gas condensation liquid outlet 551 is connected with waste gas condensation liquid feedback outlet 29, between the outlet 551 of waste gas condensation liquid and waste gas condensation liquid feedback outlet 29, is provided with phlegma storage tank 552.
The waste gas of exporting from the top waste gas outlet 22 of formaldehyde absorbing tower 2, after waste gas mist eliminator 55 is processed, have partial liquefaction, enter phlegma storage tank 552 through waste gas condensation liquid outlet 551, and then get back in middle aldehyde circulation through waste gas condensation liquid feedback outlet 29, get back to recycle in formaldehyde absorbing tower 2 through the thick aldehyde water cooler 27 of overflow and overflow feedback outlet 24.
In addition, the entrance (not shown) of an amount of makeup water can be set at the top of formaldehyde absorbing tower 2, for to the interior water delivery of formaldehyde absorbing tower 2, in order to regulate the object of concentration of formaldehyde.
One comparatively preferred embodiment in, formaldehyde knockout tower 3 is also provided with except alcohol circulation feedback outlet 33; Between the outlet 31 of essence aldehyde and smart aldehyde well heater 43, be provided with except alcohol circulation feed back bifurcations 34; Remove alcohol circulation feed back bifurcations 34 and be connected except alcohol circulation feedback outlet 33, be provided with except alcohol reboiler 35 except alcohol circulation feed back bifurcations 34 and except between alcohol circulation feedback outlet 33.
Formaldehyde absorbing tower 2 dense aldehyde after treatment is through entering formaldehyde knockout tower 3 containing alcohol formaldehyde entrance 30, in formaldehyde knockout tower 3, remove alcohol material after treatment from smart aldehyde outlet 31 outputs, through entering and heat except alcohol reboiler 35 except alcohol circulation feed back bifurcations 34, then through getting back to formaldehyde knockout tower 3 except alcohol circulation feedback outlet 33.
The schematic diagram (having increased except alcohol condenser, except alcohol water cooler, except devices such as alcohol tower grooves) of a kind of device of preparing formaldehyde that Fig. 4 provides for the utility model embodiment.
The device of preparing formaldehyde as shown in Figure 4, in an embodiment being more preferably, this device also comprises except alcohol condenser 36, except alcohol water cooler 37, except alcohol tower groove 38, except alcohol washing tower 39 and rare aldehyde water cooler 301; Formaldehyde knockout tower 3 is also provided with top discharge mouth 302; Except alcohol washing tower 39 is provided with washing entrance 303, washings outlet 304 and washings circulation feedback outlet 305; Top discharge mouth 302 is connected with the entrance except alcohol condenser 36, except the outlet of alcohol condenser 36 is connected with the entrance except alcohol water cooler 37, except the outlet of alcohol water cooler 37 is connected with the entrance except alcohol tower groove 38, except the outlet 3801 of alcohol tower groove 38 is connected with washing entrance 303, washings outlet 304 is connected with thick alcohol discharging pipeline 306; On thick alcohol discharging pipeline 306, be provided with washings loop branches mouth 307, after washings loop branches mouth 307 is connected with rare aldehyde water cooler 301, be connected with washings circulation feedback outlet 305; Reclaim outlet 316 except alcohol tower groove 38 is also provided with, formaldehyde knockout tower 3 is also provided with recovery entrance 317 and is connected with recovery outlet 316.
Methyl alcohol, from top discharge mouth 302 distillates, enters except 36 condensations of alcohol condenser, except cooling in alcohol water cooler 37, then enters except alcohol tower groove 38.Liquid methanol is through reclaiming outlet 316 and reclaiming entrance 317 and get back to formaldehyde knockout tower 3, gas enters except alcohol washing tower 39 through the outlet 3801 except alcohol tower groove 38 and washing entrance 303, washings after washing is exported through washings outlet 304 at the bottom of tower, a part enters rare aldehyde water cooler 301 through washings loop branches mouth 307, and cooling rear output is also got back to except alcohol washing tower 39 through washings circulation feedback outlet 305; Another part washings is directly exported.
In an optional embodiment, except alcohol washing tower 39 is also provided with top dehumidifying outlet 308; Top dehumidifying outlet 308 is connected except alcohol moisture trap 309, secondary remove alcohol moisture trap 310 in turn with one-level successively, one-level reclaims outlet 311 and pneumatic outlet 312 except alcohol moisture trap 309 is provided with circulation, and secondary removes alcohol moisture trap 310 and is provided with waste gas outlet 313 and waste liquid outlet 314; Remove the outlet 3801 of alcohol tower groove 38 and wash between entrance 303 and be provided with except alcohol dehumidifying return branch mouth 315, circulation is reclaimed outlet 311 and is connected except alcohol dehumidifying return branch mouth 315, pneumatic outlet 312 is connected with the entrance that secondary removes alcohol moisture trap 310, waste gas outlet 313 is connected with flare system, and waste liquid outlet 314 is connected with liquid waste treatment system.
Through the gas of circulation cleaning, remaining a small amount of methyl alcohol and formaldehyde do washing, purifying again via the bubble plate except alcohol washing tower 39 epimeres again, then enter one-level except 309 demists of alcohol moisture trap through top dehumidifying outlet 308, enter secondary except alcohol moisture trap 310 is again after demist through pneumatic outlet 312, extract discharge out by vacuum pump (not shown), the waste gas outlet 313 that secondary removes alcohol moisture trap 310 is connected with flare system, and waste liquid outlet 314 is connected with liquid waste treatment system.One-level reclaims outlet 311 and gets back to except alcohol washing tower 39 except alcohol dehumidifying return branch mouth 315, washing entrance 303 through circulation except the partial material in alcohol moisture trap 309.
The schematic diagram (having increased the devices such as rare aldehyde condenser, rare aldehyde washing tower, the rare aldehyde moisture trap of one-level, the rare aldehyde moisture trap of secondary) of a kind of device of preparing formaldehyde that Fig. 5 provides for the utility model embodiment.
The device of preparing formaldehyde as shown in Figure 5, in an optional embodiment, this device also comprises rare aldehyde condenser 44, rare aldehyde washing tower 45, the rare aldehyde moisture trap 46 of one-level, the rare aldehyde moisture trap 47 of secondary, second rare aldehyde water cooler 48 and rare aldehyde dashpot 49; Formaldehyde thickener 4 is also provided with the rare aldehyde outlet 401 in top, and the rare aldehyde outlet 401 in top is connected with the entrance of rare aldehyde condenser 44, and the outlet 4401 of rare aldehyde condenser 44 is connected with rare aldehyde dashpot 49; Rare aldehyde condenser 44 is also provided with rare aldehyde washing branch outlet 402, and rare aldehyde washing tower 45 is provided with rare aldehyde washing entrance 403, the rare aldehyde outlet 404 in bottom, top mixed export 405 and rare aldehyde cycles of washing feedback outlet 406; Rare aldehyde washing branch outlet 402 is connected with rare aldehyde washing entrance 403, and top mixed export 405 is connected in turn with the rare aldehyde moisture trap 46 of one-level, the rare aldehyde moisture trap 47 of secondary; Between rare aldehyde washing branch outlet 402 and rare aldehyde washing entrance 403, be provided with the rare aldehyde moisture trap of one-level liquid return bifurcations 407, between the entrance of the outlet of rare aldehyde condenser 44 and rare aldehyde dashpot 49, be provided with the rare aldehyde of washing and store bifurcations 408, the rare aldehyde outlet 404 in bottom stores bifurcations 408 with the rare aldehyde of washing and is connected; The rare aldehyde moisture trap 46 of one-level is also provided with liquid exit 409, and liquid exit 409 is connected with the rare aldehyde moisture trap of one-level liquid return bifurcations 407; The rare aldehyde outlet 404 in bottom and the rare aldehyde of washing store between bifurcations 408 and are provided with rare aldehyde cycles of washing bifurcations 410, and rare aldehyde cycles of washing bifurcations 410 is connected with rare aldehyde cycles of washing feedback outlet 406 after being connected with second rare aldehyde water cooler 48 again; The rare aldehyde moisture trap 47 of secondary is also provided with rare aldehyde waste gas outlet 411 and rare aldehyde waste liquid outlet 412, and rare aldehyde waste gas outlet 411 is connected with flare system, and rare aldehyde waste liquid outlet 412 is connected with liquid waste treatment system.
Through top, rare aldehyde outlet 401 enters rare aldehyde condenser 44 to the gas of formaldehyde thickener 4, and condensation goes out rare aldehyde and flow to rare aldehyde dashpot 49 through the outlet 4401 of rare aldehyde condenser 44.Residual gas enters rare aldehyde washing tower 45 circulation cleanings absorptions through rare aldehyde washing branch outlet 402 and rare aldehyde washing entrance 403 again.Washing lotion, then is sent into second rare aldehyde water cooler 48 through rare aldehyde cycles of washing bifurcations 410 and is got back to rare aldehyde washing tower 45 through rare aldehyde cycles of washing feedback outlet 406 again after cooling from the bottom of rare aldehyde washing tower 45 after the rare aldehyde outlet 404 in bottom is extracted out, forms circulation cleaning and absorbs.The washing lotion of enrichment, after rare aldehyde cycles of washing bifurcations 410 is extracted out, then stores bifurcations 408 and delivers to rare aldehyde dashpot 49 through washing rare aldehyde.
Gas after circulation cleaning absorbs, remaining a small amount of formaldehyde, again via the bubble plate of rare aldehyde washing tower 45 epimeres, do again washing, purifying, entering the rare aldehyde moisture trap 46 of one-level finally by top mixed export 405 dehumidifies, part material enters after rare aldehyde moisture trap 47 dehumidifying of secondary, and waste gas enters flare system through rare aldehyde waste gas outlet 411, and waste liquid enters liquid waste treatment system through rare aldehyde waste liquid outlet 412 and processes; A part of material is got back to rare aldehyde washing tower 45 through recovered material outlet 409, the rare aldehyde moisture trap of one-level liquid return bifurcations 407, rare aldehyde washing entrance 403 in addition.
The entrance that an input washing lotion is preferably set, is injected bubble plate washing lotion by de-salted water, the washing lotion of enrichment flows into the circulation washing lotion of lower floor through overflow weir.
The device that uses the application to provide, can, effectively compared with less energy-consumption, reduce environmental pollution, improves product purity.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a device of preparing formaldehyde, is characterized in that, comprises formaldehyde reaction device (1), formaldehyde absorbing tower (2), formaldehyde knockout tower (3) and formaldehyde thickener (4); Described formaldehyde reaction device (1) is provided with mixed gas opening for feed (10) and thick aldehyde discharge port (11), described formaldehyde absorbing tower (2) is provided with thick aldehyde opening for feed (20) and bottom formaldehyde discharge port (21), described formaldehyde knockout tower (3) is provided with containing alcohol formaldehyde entrance (30) and smart aldehyde outlet (31), and described formaldehyde thickener (4) is provided with smart aldehyde entrance (40) and dense aldehyde outlet (41); Described mixed gas opening for feed (10) is connected with material feeding tube road (12), described thick aldehyde discharge port (11) is connected with described thick aldehyde opening for feed (20), described bottom formaldehyde discharge port (21) is connected containing alcohol formaldehyde entrance (30) with described, described smart aldehyde outlet (31) is connected with described smart aldehyde entrance (40), and described dense aldehyde outlet (41) is connected with dense aldehyde groove (42); The bottom of described formaldehyde reaction device (1) is provided with heat recovery boiler (13), described bottom formaldehyde discharge port (21) and described containing between alcohol formaldehyde entrance (30) are provided with formaldehyde filter (32), between described smart aldehyde outlet (31) and described smart aldehyde entrance (40), are provided with smart aldehyde well heater (43).
2. the device of preparing formaldehyde according to claim 1, it is characterized in that, also comprise mixing tank (5), mixing tank strainer (51) and flame damper (52), it is upper that described mixing tank (5), described mixing tank strainer (51) and described flame damper (52) are successively set on described material feeding tube road (12), and the outlet of described flame damper (52) is connected with described mixed gas opening for feed (10).
3. the device of preparing formaldehyde according to claim 2, is characterized in that, also comprises methanol evaporator (53), air preheater (54), waste gas mist eliminator (55) and steam mist eliminator (56); Described mixing tank (5) is provided with methanol inlet (501), gas inlet (502), waste gas recovery entrance (503) and steam-in (504); Described methanol inlet (501) is connected with the outlet (5301) of described methanol evaporator (53), described gas inlet (502) is connected with the outlet of described air preheater (54), described waste gas reclaims entrance (503) and is connected with the outlet of described waste gas mist eliminator (55), described steam-in (504) is connected with the outlet of described steam mist eliminator (56), and the entrance of described steam mist eliminator (56) is connected with steam feed pipeline (505); Described formaldehyde absorbing tower (2) is also provided with top waste gas outlet (22), and described top waste gas outlet (22) is connected with the entrance of described waste gas mist eliminator (55).
4. the device of preparing formaldehyde according to claim 3, is characterized in that, also comprises methyl alcohol well heater (57) and air filter (58); Described methanol evaporator (53) is provided with liquid circulation outlet (506) and gas inlet (507), described methyl alcohol well heater (57) is arranged on the methanol feeding pipeline (59) being connected with described gas inlet (507), on methanol feeding pipeline (59) before the entrance of described methyl alcohol well heater (57), be provided with circulation feed back bifurcations (508), described liquid circulation outlet (506) is connected with described circulation feed back bifurcations (508); The outlet of described air filter (58) is connected with the entrance of described air preheater (54).
5. the device of preparing formaldehyde according to claim 4, it is characterized in that, described formaldehyde absorbing tower (2) is provided with overflow weir (23), overflow feedback outlet (24) and thick aldehyde feedback outlet (25), and described formaldehyde filter (32) and described containing between alcohol formaldehyde entrance (30) are provided with thick aldehyde feed back branch outlet (26); Described overflow weir (23) is connected with described overflow feedback outlet (24), between described overflow weir (23) and described overflow feedback outlet (24), is provided with the thick aldehyde water cooler of overflow (27); Described thick aldehyde feedback outlet (25) is connected with described thick aldehyde feed back branch outlet (26), is provided with the thick aldehyde water cooler (28) that refluxes between described thick aldehyde feedback outlet (25) and described thick aldehyde feed back branch outlet (26).
6. the device of preparing formaldehyde according to claim 5, is characterized in that, is provided with waste gas condensation liquid feedback outlet (29) between the thick aldehyde water cooler of described overflow weir (23) and described overflow (27); Described waste gas mist eliminator (55) is provided with waste gas condensation liquid outlet (551); Described waste gas condensation liquid outlet (551) is connected with described waste gas condensation liquid feedback outlet (29), between described waste gas condensation liquid outlet (551) and described waste gas condensation liquid feedback outlet (29), is provided with phlegma storage tank (552).
7. the device of preparing formaldehyde according to claim 6, is characterized in that, described formaldehyde knockout tower (3) is also provided with except alcohol circulation feedback outlet (33); Between described smart aldehyde outlet (31) and described smart aldehyde well heater (43), be provided with except alcohol circulation feed back bifurcations (34); Describedly is connected except alcohol circulation feedback outlet (33) with described except alcohol circulation feed back bifurcations (34), describedly removes alcohol circulation feed back bifurcations (34) and described removing between alcohol circulation feedback outlet (33) is provided with except alcohol reboiler (35).
8. the device of preparing formaldehyde according to claim 7, it is characterized in that, also comprise except alcohol condenser (36), except alcohol water cooler (37), except alcohol tower groove (38), except alcohol washing tower (39) and rare aldehyde water cooler (301); Described formaldehyde knockout tower (3) is also provided with top discharge mouth (302); Described except alcohol washing tower (39) is provided with washing entrance (303), washings exports (304) and washings circulation feedback outlet (305); Described top discharge mouth (302) is connected with the described entrance except alcohol condenser (36), the described outlet except alcohol condenser (36) is connected with the described entrance except alcohol water cooler (37), the described outlet except alcohol water cooler (37) is connected with the described entrance except alcohol tower groove (38), the described outlet (3801) except alcohol tower groove (38) is connected with described washing entrance (303), and described washings outlet (304) is connected with thick alcohol discharging pipeline (306); On described thick alcohol discharging pipeline (306), be provided with washings loop branches mouth (307), after described washings loop branches mouth (307) is connected with described rare aldehyde water cooler (301), be connected with washings circulation feedback outlet (305); Describedly reclaim outlet (316) except alcohol tower groove (38) is also provided with, described formaldehyde knockout tower (3) is also provided with and reclaims entrance (317) and export (316) with described recovery and be connected.
9. the device of preparing formaldehyde according to claim 8, is characterized in that, the described alcohol washing tower (39) that removes is also provided with top dehumidifying outlet (308); Described top dehumidifying outlet (308) is connected except alcohol moisture trap (309), secondary remove alcohol moisture trap (310) in turn with one-level successively, described one-level reclaims outlet (311) and pneumatic outlet (312) except alcohol moisture trap (309) is provided with circulation, and described secondary removes alcohol moisture trap (310) and is provided with waste gas outlet (313) and waste liquid outlet (314); Between the described outlet (3801) except alcohol tower groove (38) and washing entrance (303), be provided with except alcohol dehumidifying return branch mouth (315), described circulation is reclaimed outlet (311) and is connected with the described alcohol dehumidifying return branch mouth (315) that removes, described pneumatic outlet (312) is connected with the entrance that described secondary removes alcohol moisture trap (310), described waste gas outlet (313) is connected with flare system, and described waste liquid outlet (314) is connected with liquid waste treatment system.
10. the device of preparing formaldehyde according to claim 9, it is characterized in that, also comprise rare aldehyde condenser (44), rare aldehyde washing tower (45), the rare aldehyde moisture trap of one-level (46), the rare aldehyde moisture trap of secondary (47), second rare aldehyde water cooler (48) and rare aldehyde dashpot (49); Described formaldehyde thickener (4) is also provided with the rare aldehyde outlet in top (401), the rare aldehyde outlet in described top (401) is connected with the entrance of described rare aldehyde condenser (44), and the outlet (4401) of described rare aldehyde condenser (44) is connected with described rare aldehyde dashpot (49); Described rare aldehyde condenser (44) is also provided with rare aldehyde washing branch outlet (402), and described rare aldehyde washing tower (45) is provided with rare aldehyde washing entrance (403), the rare aldehyde outlet in bottom (404), top mixed export (405) and rare aldehyde cycles of washing feedback outlet (406); Described rare aldehyde washing branch outlet (402) is connected with described rare aldehyde washing entrance (403), and described top mixed export (405) is connected in turn with the rare aldehyde moisture trap of described one-level (46), the rare aldehyde moisture trap of described secondary (47); Between described rare aldehyde washing branch outlet (402) and described rare aldehyde washing entrance (403), be provided with the rare aldehyde moisture trap of one-level liquid return bifurcations (407), between the entrance of the outlet of described rare aldehyde condenser (44) and described rare aldehyde dashpot (49), be provided with the rare aldehyde of washing and store bifurcations (408), the rare aldehyde outlet in described bottom (404) stores bifurcations (408) with the rare aldehyde of described washing and is connected; The rare aldehyde moisture trap of described one-level (46) is also provided with liquid exit (409), and described liquid exit (409) is connected with the rare aldehyde moisture trap of described one-level liquid return bifurcations (407); The rare aldehyde of the rare aldehyde outlet in described bottom (404) and described washing stores between bifurcations (408) and is provided with rare aldehyde cycles of washing bifurcations (410), and described rare aldehyde cycles of washing bifurcations (410) is connected with described rare aldehyde cycles of washing feedback outlet (406) after being connected with described second rare aldehyde water cooler (48) again; The rare aldehyde moisture trap of described secondary (47) is also provided with rare aldehyde waste gas outlet (411) and rare aldehyde waste liquid outlet (412), described rare aldehyde waste gas outlet (411) is connected with flare system, and described rare aldehyde waste liquid outlet (412) is connected with liquid waste treatment system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420377839.2U CN203947049U (en) | 2014-07-09 | 2014-07-09 | A kind of device of preparing formaldehyde |
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| CN201420377839.2U CN203947049U (en) | 2014-07-09 | 2014-07-09 | A kind of device of preparing formaldehyde |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984965A (en) * | 2015-07-09 | 2015-10-21 | 天津渤化永利化工股份有限公司 | Method for washing formaldehyde concentrator |
| CN107501060A (en) * | 2017-08-24 | 2017-12-22 | 开封龙宇化工有限公司 | A kind of concentrated formaldehyde production technology |
| CN108658743A (en) * | 2018-06-08 | 2018-10-16 | 天津渤化永利化工股份有限公司 | A kind of device of recycling formaldehyde |
-
2014
- 2014-07-09 CN CN201420377839.2U patent/CN203947049U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984965A (en) * | 2015-07-09 | 2015-10-21 | 天津渤化永利化工股份有限公司 | Method for washing formaldehyde concentrator |
| CN104984965B (en) * | 2015-07-09 | 2017-03-08 | 天津渤化永利化工股份有限公司 | A kind of method of cleaning formaldehyde concentrator |
| CN107501060A (en) * | 2017-08-24 | 2017-12-22 | 开封龙宇化工有限公司 | A kind of concentrated formaldehyde production technology |
| CN107501060B (en) * | 2017-08-24 | 2020-12-11 | 开封龙宇化工有限公司 | Production process of concentrated formaldehyde |
| CN108658743A (en) * | 2018-06-08 | 2018-10-16 | 天津渤化永利化工股份有限公司 | A kind of device of recycling formaldehyde |
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