CN204563881U - A kind of high-concentration formaldehyde absorption tower - Google Patents

A kind of high-concentration formaldehyde absorption tower Download PDF

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Publication number
CN204563881U
CN204563881U CN201520165464.8U CN201520165464U CN204563881U CN 204563881 U CN204563881 U CN 204563881U CN 201520165464 U CN201520165464 U CN 201520165464U CN 204563881 U CN204563881 U CN 204563881U
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CN
China
Prior art keywords
spray
section
absorption
packing material
material absorbing
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
Application number
CN201520165464.8U
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Chinese (zh)
Inventor
叶子茂
向家勇
鄢小明
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JIANGSU KAIMAO CHEMICAL TECHNOLOGY Co Ltd
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JIANGSU KAIMAO CHEMICAL TECHNOLOGY Co Ltd
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Priority to CN201520165464.8U priority Critical patent/CN204563881U/en
Application granted granted Critical
Publication of CN204563881U publication Critical patent/CN204563881U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of high-concentration formaldehyde absorption tower, the cylindrical shell top on this absorption tower is packing material absorbing section, the bottom of described absorber tower cylinder is spray-absorption section, comprises the high-concentration formaldehyde gas feed be located on cylindrical shell, the gas distributor be connected with high-concentration formaldehyde gas feed, is located at spray system above spray-absorption section; Described spray-absorption section is communicated with by vapor riser with between packing material absorbing section, and the bottom of packing material absorbing section is also provided with the communicating pipe be connected with spray-absorption section spray system, and the sidewall bottom described packing material absorbing section is also provided with adopts liquid mouth; The bottom of described spray-absorption section is connected to form forced circulation by pipeline and liquid pump and spray system, and the bottom of described spray-absorption section is also provided with highly concentrated formaldehyde solution extraction mouth.The utility model can produce the high-concentration formaldehyde of 50 ~ 70%, and can not cause the blocking of filler or column plate, and absorption efficiency is high, and the normal cycle of operation is long, makes production cost low.

Description

A kind of high-concentration formaldehyde absorption tower
Technical field
The utility model belongs to chemical production technology and equipment technical field, relates generally to formaldehyde absorption tower apparatus.
Background technology
Existing absorption tower lower floor dress be filler or column plate.Because concentration of formaldehyde is too high, formalin on filler and column plate is because flowing velocity is slow or do not have complete wetting can produce paraformaldehyde viscous solid on filler or column plate due to filler, along with time integral, cause filler or column plate blocking, the absorption efficiency even tower internals that declines is scrapped.
Summary of the invention
Goal of the invention: for above-mentioned Problems existing and defect, the utility model provides a kind of high-concentration formaldehyde absorption tower, and the paraformaldehyde sticky particle produced when producing highly concentrated formaldehyde solution can be avoided to block filler passage or column plate, and absorption efficiency is high, the normal cycle of operation is long, and cost is low.
Technical scheme: for achieving the above object, the utility model is by the following technical solutions: a kind of high-concentration formaldehyde absorption tower, the cylindrical shell top on this absorption tower is packing material absorbing section, the bottom of described absorber tower cylinder is spray-absorption section, comprises the high-concentration formaldehyde gas feed be located on cylindrical shell, the gas distributor be connected with high-concentration formaldehyde gas feed, is located at spray system above spray-absorption section; Described spray-absorption section is communicated with by vapor riser with between packing material absorbing section, and the bottom of packing material absorbing section is also provided with the communicating pipe be connected with spray-absorption section spray system, and the sidewall bottom described packing material absorbing section is also provided with adopts liquid mouth; The bottom of described spray-absorption section is connected to form forced circulation by pipeline and liquid pump and spray system, and the bottom of described spray-absorption section is also provided with highly concentrated formaldehyde solution extraction mouth.
As preferably, described packing material absorbing section is secondary packing material absorbing section, even three grades of packed absorbers, thus by regulating air-flow Negotiation speed and all numbers of cyclic absorption, control the concentration from every grade of absorber portion extraction formalin, thus various concentration byproduct can be obtained flexibly.
As preferably, described spray system comprises two cover spray equipments, and wherein a set of spray equipment was connected with the communicating pipe of packing material absorbing section, and another set of spray equipment is connected with the bottom of liquid pump with spray-absorption section by pipeline.Owing to adopting independently two cover spray equipments, thus the communicating pipe making flow less is blade mode carries out liquid distribution, advantageously in raising absorptivity.
As preferably, the bottom of described spray-absorption section is for being obliquely installed, and highly concentrated formaldehyde solution extraction mouth is located at lower side.
Described packing material absorbing section can be replaced by column plate absorber portion.
Beneficial effect: compared with prior art, the utility model has the following advantages: can produce the high-concentration formaldehyde of 50 ~ 70%, and can not cause the blocking of filler or column plate, and absorption efficiency is high, and the normal cycle of operation is long, makes production cost low.
Accompanying drawing explanation
Fig. 1 is the structural representation of formaldehyde absorbing tower described in the utility model.
Wherein, packing material absorbing section 1, spray-absorption section 2, formaldehyde gas import 3, gas distributor 4, spray equipment 5, vapor riser 6, adopt liquid mouth 7, highly concentrated formaldehyde solution extraction mouth 8, communicating pipe 9.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen within the application's claims limited range.
As shown in Figure 1, a kind of high-concentration formaldehyde absorption tower, relative to traditional formaldehyde absorbing tower, direct spray-absorption section is also provided with in the bottom of packing material absorbing section or column plate trap, concrete structure is as follows: the spray-absorption section of the bottom of described absorber tower cylinder, comprises the high-concentration formaldehyde gas feed be located on cylindrical shell, the gas distributor be connected with high-concentration formaldehyde gas feed, is located at spray system above spray-absorption section; Described spray-absorption section is communicated with by vapor riser with between packing material absorbing section, and the bottom of packing material absorbing section was connected with spray equipment by communicating pipe, is then connected to form forced circulation by pipeline and liquid pump and another set of spray equipment bottom spray-absorption section.As preferably, the packing material absorbing section on top is secondary packing material absorbing section, in the bottom of packing material absorbing section every grade of bottom and spray-absorption section, extraction mouth is all set, obtain the formalin that concentration differs respectively, thus meet various demand, especially the extraction mouth of the spray-absorption section of bottom can obtain the highly concentrated formaldehyde solution of 50 ~ 70%.
In addition, as preferably, the base plate of each extraction mouth correspondence is for being obliquely installed, and extraction mouth is located at lower side, thus facilitates product extraction.
From oxidator out containing high concentration formaldehyde gas with from tower last layer come rare formalin and from circulating pump at the bottom of tower to top distributor reverse contact of circulation fluid carry out heat exchange and mass transter.Absorbed containing formaldehyde a large amount of in formaldehyde gas, part does not absorb the formaldehyde got off and enters absorption in last layer tower.Owing to not having filler or column plate in tower, liquid residence time is short, does not also have liquid flow dead angle, there will not be oxymethylene polymerization.Owing to there is not the possibility of blocking filler or tower internals, the high-concentration formaldehyde making 50%-70% therefore can be absorbed.

Claims (5)

1. a high-concentration formaldehyde absorption tower, the cylindrical shell top on this absorption tower is packing material absorbing section, it is characterized in that: the bottom of described absorber tower cylinder is spray-absorption section, comprise the high-concentration formaldehyde gas feed be located on cylindrical shell, the gas distributor be connected with high-concentration formaldehyde gas feed, be located at spray system above spray-absorption section; Described spray-absorption section is communicated with by vapor riser with between packing material absorbing section, and the bottom of packing material absorbing section is also provided with the communicating pipe be connected with spray-absorption section spray system, and the sidewall bottom described packing material absorbing section is also provided with adopts liquid mouth; The bottom of described spray-absorption section is connected to form forced circulation by pipeline and liquid pump and spray system, and the bottom of described spray-absorption section is also provided with highly concentrated formaldehyde solution extraction mouth.
2. high-concentration formaldehyde absorption tower according to claim 1, is characterized in that: described packing material absorbing section is secondary packing material absorbing section.
3. high-concentration formaldehyde absorption tower according to claim 1, it is characterized in that: described spray system comprises two cover spray equipments, wherein a set of spray equipment was connected with the communicating pipe of packing material absorbing section, and another set of spray equipment is connected with the bottom of liquid pump with spray-absorption section by pipeline.
4. high-concentration formaldehyde absorption tower according to claim 1, is characterized in that: the bottom of described spray-absorption section is for being obliquely installed, and highly concentrated formaldehyde solution extraction mouth is located at lower side.
5. high-concentration formaldehyde absorption tower according to claim 1, is characterized in that: described packing material absorbing section is column plate absorber portion.
CN201520165464.8U 2015-03-24 2015-03-24 A kind of high-concentration formaldehyde absorption tower Expired - Fee Related CN204563881U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520165464.8U CN204563881U (en) 2015-03-24 2015-03-24 A kind of high-concentration formaldehyde absorption tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520165464.8U CN204563881U (en) 2015-03-24 2015-03-24 A kind of high-concentration formaldehyde absorption tower

Publications (1)

Publication Number Publication Date
CN204563881U true CN204563881U (en) 2015-08-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520165464.8U Expired - Fee Related CN204563881U (en) 2015-03-24 2015-03-24 A kind of high-concentration formaldehyde absorption tower

Country Status (1)

Country Link
CN (1) CN204563881U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106123642A (en) * 2016-08-19 2016-11-16 无锡市华立石化工程有限公司 The heat-exchange system of the novel oxidator of methanol without tube sheet
CN106422677A (en) * 2016-08-31 2017-02-22 安徽金禾实业股份有限公司 Novel formaldehyde spray type absorption tower

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106123642A (en) * 2016-08-19 2016-11-16 无锡市华立石化工程有限公司 The heat-exchange system of the novel oxidator of methanol without tube sheet
CN106422677A (en) * 2016-08-31 2017-02-22 安徽金禾实业股份有限公司 Novel formaldehyde spray type absorption tower

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150819

Termination date: 20180324

CF01 Termination of patent right due to non-payment of annual fee