CN204365109U - A kind of formaldehyde absorbing tower of anti-polymerization - Google Patents
A kind of formaldehyde absorbing tower of anti-polymerization Download PDFInfo
- Publication number
- CN204365109U CN204365109U CN201420869787.0U CN201420869787U CN204365109U CN 204365109 U CN204365109 U CN 204365109U CN 201420869787 U CN201420869787 U CN 201420869787U CN 204365109 U CN204365109 U CN 204365109U
- Authority
- CN
- China
- Prior art keywords
- tower
- formaldehyde
- heat
- coil pipe
- hot water
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of formaldehyde absorbing tower of anti-polymerization, belong to formaldehyde absorbing tower technical field.Be provided with mass transfer exchange mechanism in the inside of absorption tower tower body in the utility model, mass transfer exchange mechanism is used for the formaldehyde gas entered by air inlet and the absorbing liquid mass transfer entered by absorbing liquid entrance to exchange; Absorption tower tower body lower outside wall is provided with heat-insulating coil pipe, and heat-insulating coil pipe is connected with hot water supply system, and hot water supply system is provided with hot water temperature's controller, and pipeline between heat-insulating coil pipe and hot water supply system is provided with hot water flow valve; The external sidewall of the absorbing tower that heat-insulating coil pipe is corresponding offers visual windows, and this visual windows is provided with industrial camera, and industrial camera transfers to industrial computer by EPA.The utility model avoids high-concentration formaldehyde to be polymerized when temperature drop is larger, overcomes the technical barrier of long-standing problem formaldehyde industry production highly concentrated formaldehyde solution.
Description
Technical field
The utility model relates to formaldehyde absorbing tower technical field, more particularly, relates to a kind of formaldehyde absorbing tower of anti-polymerization.
Background technology
Industrial formaldehyde solution is a kind of important Elementary Chemical Industry raw material, conventional is mass fraction be 37% industrial formaldehyde solution, in recent years along with the continuous lifting that formaldehyde Downstream Market requires industrial formol product quality, more and more higher to the concentration requirement of industrial formol, especially the high-concentration formaldehyde market share of 42% ~ 55% is in continuous rising.
Formaldehyde Production take methyl alcohol as raw material, air is passed into after being evaporated by methyl alcohol, under catalyst action, formaldehyde is oxidized in formolite reaction device, the reaction gas containing formaldehyde is obtained after reaction, this reaction gas need absorb to obtain formalin further in formaldehyde absorbing tower, this absorption process generally completes in the first absorption tower, usually also assists second, third absorption tower.The technology of the traditional absorption system of current formaldehyde industry is as follows: from the formaldehyde gas of oxidator by entering in the first absorption tower at the bottom of tower, structured filling material layer is entered by padding support frame, absorbing liquid then enters liquid distribution trough by tower top, absorbing liquid is sprayed in structured packing uniformly, filling surface absorbed liquid is soaked, gas by during packing layer space and the absorbing liquid of filling surface carry out mass transfer exchange.High-concentration formaldehyde is discharged from bottom in first absorption tower of the prior art, but the high-concentration formaldehyde bottom the first absorption tower is very easily polymerized, and produces number of polymers and has a strong impact on follow-up transport and processing use.How effectively preventing the polymerization of formalin in tower, is the technical barrier of long-standing problem formaldehyde industry production highly concentrated formaldehyde solution.
Pass through patent retrieval, how to avoid the technical scheme of oxymethylene polymerization existing open about in production high-concentration formaldehyde process, as: Chinese Patent Application No.: 200920232727.7, the applying date: on September 9th, 2009, invention and created name is: methyl aldehyde combined type absorption tower, this application case discloses a kind of methyl aldehyde combined type absorption tower for formaldehyde cooling and absorbing technique, there is cylindrical shell, cylindrical shell comprises section at the bottom of tower from bottom to top successively, cooling section, absorber portion, float valve section, tower top section, disc type distributor is provided with between cooling section and absorber portion, the diameter of cooling section is larger than the diameter of absorber portion, cooling section and absorber portion inside are all filled with stainless steel structured packing.This application case completes needing the operation of the absorption operation completed on two absorption towers to be incorporated in a device, and save the cost of overall investment, the loss of heat is less.
And for example, Chinese Patent Application No.: 201410473513.4, the applying date: on September 16th, 2014, invention and created name is: the absorption tower device in a kind of silver-colored method high-concentration formaldehyde device, this application case discloses the absorption tower device in a kind of silver-colored method high-concentration formaldehyde device, comprise the first absorption tower and second absorption tower, described first absorption tower is divided into air inlet section, float valve tray section, Pall ring section, structured packing section and gaseous phase outlet from bottom to up successively, is provided with gas feed and the spray equipment for spraying formalin in described air inlet section; Described float valve tray section is provided with multilayer float valve tray; Collecting tank is provided with between described float valve tray section and Pall ring section; Described structured packing section is divided into multilayer structured packing and combines; Described second absorption tower is divided into air inlet section, the first structured packing section, the second structured packing section and bubble-cap section from bottom to up successively; The top of described bubble-cap section is also provided with structured packing and catches liquid layer and wire mesh demister.Two above-mentioned technical schemes to some extent solve the problem that formaldehyde is easily polymerized, but comparatively large to the transformation of existing equipment, and project reconstruction cost is high.
Utility model content
1. the utility model technical problem that will solve
The high-concentration formaldehyde that the purpose of this utility model is to overcome formaldehyde absorption tower bottom in prior art is very easily polymerized, number of polymers is caused to affect the deficiency of subsequent transportation and processing use, provide a kind of formaldehyde absorbing tower of anti-polymerization, adopt the technical solution of the utility model, effectively can be prevented the polymerization of formalin in tower by the design of heat-insulating coil pipe, overcome the technical barrier of long-standing problem formaldehyde industry production highly concentrated formaldehyde solution.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
The formaldehyde absorbing tower of a kind of anti-polymerization of the present utility model, comprise absorption tower tower body, also comprise mass transfer exchange mechanism, air inlet, gas outlet, heat-insulating coil pipe and visual windows, wherein: the side opening of described tower body lower end, absorption tower is provided with air inlet, this tower body top, absorption tower offers gas outlet, and tower body top, absorption tower is provided with absorbing liquid entrance, be provided with mass transfer exchange mechanism in the inside of absorption tower tower body, this mass transfer exchange mechanism is used for the formaldehyde gas entered by air inlet and the absorbing liquid mass transfer entered by absorbing liquid entrance to exchange; Described absorption tower tower body lower outside wall is provided with heat-insulating coil pipe, this heat-insulating coil pipe is positioned at the below of mass transfer exchange mechanism, described heat-insulating coil pipe is connected with hot water supply system, hot water supply system is provided with hot water temperature's controller, and pipeline between heat-insulating coil pipe and hot water supply system is provided with hot water flow valve; The external sidewall of the absorbing tower that above-mentioned heat-insulating coil pipe is corresponding offers visual windows, this visual windows is provided with industrial camera, described industrial camera transfers to industrial computer by EPA, industrial computer processes industrial camera signal and stores, and is sent to display display.
Further improve as the utility model, described mass transfer exchange mechanism comprises lower packing layer, upper packing layer, lower liquid distributor and upper liquid distributor, and above-mentioned lower packing layer, lower liquid distributor, upper packing layer, upper liquid distributor are installed from the bottom to top successively in tower body inside, absorption tower.
Further improve as the utility model, also comprise discharging pump and finished pot, bottom described absorption tower tower body, be connected to finished pot by conveyance conduit, between finished pot and absorption tower tower body outlet at bottom, discharging pump is installed.
Further improve as the utility model, the conveyance conduit periphery between bottom described finished pot and absorption tower tower body is provided with heat-insulation layer.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with prior art, has following beneficial effect:
(1) formaldehyde absorbing tower of a kind of anti-polymerization of the present utility model, absorption tower tower body lower outside wall is provided with heat-insulating coil pipe, this heat-insulating coil pipe is connected with hot water supply system, hot water supply system is provided with hot water temperature's controller, and pipeline between heat-insulating coil pipe and hot water supply system is provided with hot water flow valve, the utility model carries out heat supply by temperature and the controlled hot water supply system of flow to heat-insulating coil pipe, temperature drop in the tower of tower body bottom, absorption tower is effectively controlled, thus avoid high-concentration formaldehyde to be polymerized when temperature drop is larger, overcome the technical barrier of long-standing problem formaldehyde industry production highly concentrated formaldehyde solution,
(2) formaldehyde absorbing tower of a kind of anti-polymerization of the present utility model, the external sidewall of the absorbing tower that heat-insulating coil pipe is corresponding offers visual windows, this visual windows is provided with the industrial camera be connected with industrial computer, whether the high-concentration formaldehyde can being observed tower body inside, absorption tower by industrial camera intuitively there occurs polymerization, and control temperature and the flow of hot water supply system, thus effectively prevent the polymerization of formalin in tower;
(3) formaldehyde absorbing tower of a kind of anti-polymerization of the present utility model, reasonable in design, principle is simple, is convenient to promote the use of.
Accompanying drawing explanation
Fig. 1 is the structural representation of the formaldehyde absorbing tower of a kind of anti-polymerization of the present utility model.
Label declaration in schematic diagram:
1, air inlet; 21, lower packing layer; 22, upper packing layer; 31, lower liquid distributor; 32, upper liquid distributor; 4, gas outlet; 5, heat-insulating coil pipe; 6, visual windows; 7, discharging pump; 8, finished pot.
Detailed description of the invention
For understanding content of the present utility model further, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
Composition graphs 1, the formaldehyde absorbing tower of a kind of anti-polymerization of the present embodiment, primarily of compositions such as absorption tower tower body, mass transfer exchange mechanism, air inlet 1, gas outlet 4, heat-insulating coil pipe 5, visual windows 6, discharging pump 7 and finished pots 8.In the present embodiment, the side opening of absorption tower tower body lower end is provided with air inlet 1, this air inlet 1 is delivered to tower body inside, absorption tower for the formaldehyde gas of autoxidation device in future, this tower body top, absorption tower offers gas outlet 4, and tower body top, absorption tower is provided with absorbing liquid entrance, in the inside of absorption tower tower body, mass transfer exchange mechanism is installed, concrete mass transfer exchange mechanism in the present embodiment comprises lower packing layer 21, upper packing layer 22, lower liquid distributor 31 and upper liquid distributor 32, lower packing layer 21, lower liquid distributor 31, upper packing layer 22, upper liquid distributor 32 installs (as shown in Figure 1) from the bottom to top successively in tower body inside, absorption tower, this mass transfer exchange mechanism is used for the formaldehyde gas entered by air inlet 1 and the absorbing liquid mass transfer entered by absorbing liquid entrance to exchange.
In order to control tower body bottom, absorption tower tower in temperature drop, the present embodiment is provided with heat-insulating coil pipe 5 on the tower body lower outside wall of absorption tower, this heat-insulating coil pipe 5 is positioned at the below of mass transfer exchange mechanism, and heat-insulating coil pipe 5 is connected with hot water supply system, hot water supply system is provided with hot water temperature's controller, meanwhile, the pipeline between heat-insulating coil pipe 5 and hot water supply system is provided with hot water flow valve.Applicant is found by great many of experiments, at the high-concentration formaldehyde of tower body bottom, absorption tower, if temperature drop is larger in its tower, then easily be polymerized, the present embodiment by installing heat-insulating coil pipe 5 on the tower body lower outside wall of absorption tower, temperature drop speed in the tower controlling tower body bottom, absorption tower, thus avoid high-concentration formaldehyde and be polymerized when temperature drop is larger, overcome the technical barrier of long-standing problem formaldehyde industry production highly concentrated formaldehyde solution.Control the effect of temperature drop to increase heat-insulating coil pipe 5 in the present embodiment, the cross section of heat-insulating coil pipe 5 is set to semicircular structure, the diametral plane of semicircular structure heat-insulating coil pipe 5 and the lateral wall of absorption tower tower body fit, the periphery of this semicircular structure heat-insulating coil pipe 5 outwardly, and in the outside of periphery, heat-insulation layer is installed, avoid scattering and disappearing of heat.
The present embodiment offers visual windows 6 on the external sidewall of absorbing tower of heat-insulating coil pipe 5 correspondence, this visual windows 6 is provided with industrial camera, described industrial camera transfers to industrial computer by EPA, industrial computer processes industrial camera signal and stores, and is sent to display display.Whether the high-concentration formaldehyde can being observed tower body inside, absorption tower by industrial camera intuitively there occurs polymerization, and controls temperature and the flow of hot water supply system, thus effectively prevents the polymerization of formalin in tower.
During use, the formaldehyde gas of autoxidation device is transported from air inlet 1, absorbing liquid is passed into from absorbing liquid entrance, absorbing liquid and formaldehyde gas complete mass transfer exchange reaction in mass transfer exchange mechanism, in tower body bottom, absorption tower by temperature drop speed in heat-insulating coil pipe 5 control tower, mass transfer exchanges the high-concentration formaldehyde formed and discharges bottom the tower body of absorption tower, finished pot 8 is connected to by conveyance conduit bottom the tower body of absorption tower, between finished pot 8 and absorption tower tower body outlet at bottom, discharging pump 7 is installed, and bottom finished pot 8 and absorption tower tower body between conveyance conduit periphery be provided with heat-insulation layer, this heat-insulation layer will ensure that high-concentration formaldehyde arrives the temperature drop speed before finished pot 8 to a certain extent, thus ensure that the quality of high-concentration formaldehyde.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (4)
1. the formaldehyde absorbing tower of an anti-polymerization, comprise absorption tower tower body, it is characterized in that: also comprise mass transfer exchange mechanism, air inlet (1), gas outlet (4), heat-insulating coil pipe (5) and visual windows (6), wherein:
The side opening of described tower body lower end, absorption tower is provided with air inlet (1), this tower body top, absorption tower offers gas outlet (4), and tower body top, absorption tower is provided with absorbing liquid entrance, be provided with mass transfer exchange mechanism in the inside of absorption tower tower body, this mass transfer exchange mechanism is used for the formaldehyde gas entered by air inlet (1) and the absorbing liquid mass transfer entered by absorbing liquid entrance to exchange; Described absorption tower tower body lower outside wall is provided with heat-insulating coil pipe (5), this heat-insulating coil pipe (5) is positioned at the below of mass transfer exchange mechanism, described heat-insulating coil pipe (5) is connected with hot water supply system, hot water supply system is provided with hot water temperature's controller, and pipeline between heat-insulating coil pipe (5) and hot water supply system is provided with hot water flow valve;
The external sidewall of absorbing tower that above-mentioned heat-insulating coil pipe (5) is corresponding offers visual windows (6), (6) are provided with industrial camera to this visual windows, described industrial camera transfers to industrial computer by EPA, industrial computer processes industrial camera signal and stores, and is sent to display display.
2. the formaldehyde absorbing tower of a kind of anti-polymerization according to claim 1, it is characterized in that: described mass transfer exchange mechanism comprises lower packing layer (21), upper packing layer (22), lower liquid distributor (31) and upper liquid distributor (32), above-mentioned lower packing layer (21), lower liquid distributor (31), upper packing layer (22), upper liquid distributor (32) are installed from the bottom to top successively in tower body inside, absorption tower.
3. the formaldehyde absorbing tower of a kind of anti-polymerization according to claim 1 and 2, it is characterized in that: also comprise discharging pump (7) and finished pot (8), be connected to finished pot (8) by conveyance conduit bottom described absorption tower tower body, discharging pump (7) is installed between finished pot (8) and absorption tower tower body outlet at bottom.
4. the formaldehyde absorbing tower of a kind of anti-polymerization according to claim 3, is characterized in that: the conveyance conduit periphery between bottom described finished pot (8) and absorption tower tower body is provided with heat-insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869787.0U CN204365109U (en) | 2014-12-31 | 2014-12-31 | A kind of formaldehyde absorbing tower of anti-polymerization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869787.0U CN204365109U (en) | 2014-12-31 | 2014-12-31 | A kind of formaldehyde absorbing tower of anti-polymerization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204365109U true CN204365109U (en) | 2015-06-03 |
Family
ID=53321360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420869787.0U Expired - Fee Related CN204365109U (en) | 2014-12-31 | 2014-12-31 | A kind of formaldehyde absorbing tower of anti-polymerization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204365109U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569252A (en) * | 2019-01-22 | 2019-04-05 | 厦门大学嘉庚学院 | Active formaldehyde absorption and disposition integrated system and its working method |
| CN112569748A (en) * | 2020-11-09 | 2021-03-30 | 潍坊惠丰化工有限公司 | Absorption tower and absorption process for absorbing high-concentration formaldehyde |
| CN114643028A (en) * | 2020-12-18 | 2022-06-21 | 浙江国宇塑业有限公司 | Formaldehyde production device based on DCS control system |
-
2014
- 2014-12-31 CN CN201420869787.0U patent/CN204365109U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569252A (en) * | 2019-01-22 | 2019-04-05 | 厦门大学嘉庚学院 | Active formaldehyde absorption and disposition integrated system and its working method |
| CN109569252B (en) * | 2019-01-22 | 2024-04-12 | 厦门大学嘉庚学院 | Active formaldehyde absorption and disposal integrated system and working method thereof |
| CN112569748A (en) * | 2020-11-09 | 2021-03-30 | 潍坊惠丰化工有限公司 | Absorption tower and absorption process for absorbing high-concentration formaldehyde |
| CN114643028A (en) * | 2020-12-18 | 2022-06-21 | 浙江国宇塑业有限公司 | Formaldehyde production device based on DCS control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204365109U (en) | A kind of formaldehyde absorbing tower of anti-polymerization | |
| CN104163438B (en) | A kind of recovery process of discharging ammonia | |
| CN212458016U (en) | Waste heat recovery system | |
| CN205360991U (en) | Low boiling organic gas adsorbs treating column | |
| CN205035302U (en) | A rectifying still fluid recovery unit that is arranged in synthetic technology of carboxamide | |
| CN205598940U (en) | A tail gas degree of depth absorbing device for alkoxylation | |
| CN109280215B (en) | Desorption device for chlorobutene latex production and application thereof | |
| CN209338109U (en) | A kind of hydrogen from methyl alcohol high-efficient washing device | |
| CN207694787U (en) | A kind of hydrogenation and dehydrogenization retort | |
| CN206454298U (en) | A kind of chemical industry rectifier unit | |
| CN204996459U (en) | Horizontal extrinsic cycle atomizing ethoxy - reaction unit | |
| CN204325190U (en) | The acid neutralising arrangement of a kind of biodiesel methanol | |
| CN204365108U (en) | A kind of Monitoring and Controlling mechanism preventing oxymethylene polymerization | |
| CN204005264U (en) | Gas conveying tube drainage means | |
| CN206519002U (en) | A kind of carbamide dust aspiration cleaning system | |
| CN106693564A (en) | Urea dust gas absorbing and purifying system | |
| CN204293899U (en) | Ethylene trimerization prepares hexene-1 reaction product flash tank | |
| CN209005530U (en) | A kind of Tower for purifying waste gas | |
| CN209237691U (en) | Tail gas and subsequent acidic water treatment facilities when a kind of damage | |
| CN106310903A (en) | Waste gas reaction tower capable of secondary treatment | |
| CN206955994U (en) | A kind of oil and fat refining deodorizing tower | |
| CN205833396U (en) | A kind of sour method composite heat transfer dilute sulfuric acid spray appliance | |
| CN204369779U (en) | A kind of oxidative absorption system preparing high-concentration formaldehyde | |
| CN205907197U (en) | Concentrated sulfuric acid dilutes equipment on line for ammonia -acid process compound fertilizer production | |
| CN205473475U (en) | Acrolein apparatus for producing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20181231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |