CN217698297U

CN217698297U - Formaldehyde removal equipment

Info

Publication number: CN217698297U
Application number: CN202221976434.1U
Authority: CN
Inventors: 张辉; 王芳; 魏大淳; 马金喜; 伍飞; 李曙朝; 杜军; 熊超
Original assignee: Lianyungang Petrochemical Co Ltd
Current assignee: Lianyungang Petrochemical Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-11-01
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a dealdehyding equipment belongs to dealdehyding equipment technical field, including air cooler and cooler, the cooler cools down for the ethylene glycol solution after filtering, and ethylene glycol discharging pipeline is linked together with air cooler 1, its characterized in that, air cooler 1 be linked together through pipeline and dealdehyding bed A, be equipped with valve J on the pipeline that links to each other, dealdehyding bed A be linked together through pipeline and dealdehyding bed B, be equipped with valve D and valve E on the pipeline that links to each other in proper order, dealdehyding bed B be linked together through pipeline and basket filter, basket filter be linked together through pipeline and cooler, basket filter is used for filtering the mechanical impurity in the ethylene glycol, makes the ethylene glycol can more accord with the production needs, is equipped with the liquid level control valve on the pipeline that links to each other; solves the technical problem of high aldehyde content of the glycol produced by the existing equipment, and is mainly applied to the aspect of removing aldehyde from the glycol.

Description

Formaldehyde removal equipment

Technical Field

The utility model belongs to the technical field of the aldehyde equipment of taking off, concretely relates to aldehyde equipment takes off.

Background

Ethylene glycol is a colorless and slightly viscous liquid, commonly called glycol, and can be mixed with water in any proportion. The ethylene glycol is mainly used for preparing polyester, terylene, surfactant, synthetic fiber, antifreezing agent of engines and the like, can be used for producing industrial products such as synthetic resin, terylene fiber, antifreezing fluid of automobiles and the like, has extremely wide industrial application and is an essential chemical basic raw material. The high aldehyde content in the ethylene glycol product can affect the ultraviolet transmittance, thereby affecting the quality of the polyester fiber product, so that the downstream industry of the ethylene glycol product has strict requirements on the aldehyde content in the ethylene glycol product, wherein the lower the aldehyde content is, the better the quality of the polyester fiber product is.

To this phenomenon, the utility model provides a aldehyde equipment takes off improves the aldehyde ability of taking off of ethylene glycol product, reduces the aldehyde content in the product.

Disclosure of Invention

In order to solve the technical problems proposed in the background art, the design provides a dealdehyding device, which adopts the following technical scheme:

a dealdehyding device comprises an air cooler and a cooler, wherein the air cooler is used for cooling produced glycol solution, the cooler is used for cooling filtered glycol solution, a glycol discharge pipeline is communicated with a circulating pump, and the circulating pump is communicated with the air cooler through a pipeline.

The air cooler 1 is communicated with the aldehyde removing bed B through a pipeline, a valve A, a valve C and a valve E are sequentially arranged on a connecting pipeline, the aldehyde removing bed B is communicated with the aldehyde removing bed C through a pipeline, and a valve H and a valve B are sequentially arranged on the connecting pipeline; the dealdehyding bed C is communicated with the basket filter through a pipeline, and a valve I is arranged on the connected pipeline; the dealdehyding bed B is communicated with the basket filter through a pipeline, and a valve G is arranged on the connected pipeline; the aldehyde removing bed A is communicated with the basket filter through a pipeline, a valve F is arranged on the pipeline, the aldehyde removing bed A, the aldehyde removing bed B and the aldehyde removing bed C are identical in structure, the aldehyde removing bed A and the aldehyde removing bed B are identical in size, the diameter of the aldehyde removing bed C is larger than that of the aldehyde removing bed A and that of the aldehyde removing bed B, the height of the aldehyde removing bed C (5) is higher than that of the aldehyde removing bed A (2) and that of the aldehyde removing bed B (4), and the aldehyde removing capacity of the aldehyde removing bed C is superior to that of the aldehyde removing bed A and that of the aldehyde removing bed B.

The aldehyde removal bed A comprises a shell, wherein a feeding port A, a discharging port A and a base are respectively arranged on the shell, aldehyde removal resin is arranged in the shell, the aldehyde removal resin plays a role as a catalyst in the aldehyde removal process, namely the aldehyde removal bed is a macroporous strong acid cation exchange resin catalyst with special performance, aldehyde and glycol react to form glycol acetal by an aldehyde removal mechanism, and the glycol acetal is not in the product quality range of international glycol.

The basket filter comprises a shell, wherein a feeding hole and a discharging hole are formed in the left side and the right side of the shell respectively, and a filtering basket is arranged in the shell.

The utility model discloses be equipped with the design of 3 dealdehyding beds, the operational mode of dealdehyding bed A and dealdehyding bed B divide into three kinds: one is used for standby, the other is used in series, and the other is used in parallel; the added aldehyde removal bed C can be operated independently or respectively connected with the aldehyde removal bed A and the aldehyde removal bed B in parallel.

The utility model has the advantages that: through adopting the utility model discloses a design, through the operation mode of adjusting 3 aldehyde beds of taking off, aldehyde bed A and aldehyde bed B's operation mode divide into three kinds: one is used for standby, the other is used in series, and the third is used in parallel; the added aldehyde removing bed C can independently operate, and also can respectively operate in parallel with the aldehyde removing bed A and the aldehyde removing bed B, the aldehyde removing resin can be replaced on line when replaced, the plant is prevented from being stopped and replaced, the aldehyde removing capacity of the equipment can be improved under the condition of series connection, the aldehyde content of the ethylene glycol product is reduced, and the method is suitable for comprehensive popularization and application.

Drawings

Figure 1 is the structure diagram of the aldehyde removing equipment of the utility model.

Detailed Description

Example 1

As shown in fig. 1:

when the aldehyde removal bed A2 and the aldehyde removal bed B4 are adopted for serial aldehyde removal,

a dealdehyding device comprises an air cooler 1 and a cooler 7, wherein an ethylene glycol discharge pipeline is communicated with the air cooler 1, and is characterized in that the air cooler 1 is communicated with a dealdehyding bed A2 through a pipeline, a valve J3-11 is arranged on a connecting pipeline, the dealdehyding bed A2 is communicated with a dealdehyding bed B4 through a pipeline, a valve D3-4 and a valve E3-5 are sequentially arranged on the connecting pipeline, the dealdehyding bed B4 is communicated with a basket filter 6 through a pipeline, the basket filter comprises a shell, a feed inlet 6-1 and a discharge outlet 6-2 are respectively arranged on the left side and the right side of the shell, a filter basket 6-3 is arranged in the shell, the basket filter 6 is communicated with the cooler 7 through a pipeline, and a liquid level regulating valve 3-10 is arranged on the connecting pipeline.

The working principle of the utility model is as follows: by controlling the opening of valves J3-11, D3-4, E3-5 and G3-7 and the closing of other valves, the glycol solution produced immediately after being input into the air cooler 1 by the circulating pump 8 is cooled, then is jointly dealdehydized by the dealdehyding bed A2 and the dealdehyding bed B4, then is filtered by the basket filter 6 to remove impurities, is cooled by the cooler 7 and then is collected in the storage tank.

Example 2

When the aldehyde is removed by using the aldehyde removal bed C alone,

a dealdehyding device comprises an air cooler 1 and a cooler 7, wherein an ethylene glycol discharge pipeline is communicated with the air cooler 1, and is characterized in that the air cooler 1 is communicated with a dealdehyding bed C5 through a pipeline, a valve A3-1 and a valve B3-2 are arranged on a connecting pipeline, the dealdehyding bed C5 is communicated with a basket filter 6 through a pipeline, the basket filter comprises a shell, a feed inlet 6-1 and a discharge outlet 6-2 are respectively arranged on the left side and the right side of the shell, a filter basket 6-3 is arranged in the shell, and a valve I3-9 is arranged on a connecting pipeline.

The working principle of the utility model is as follows: by controlling the opening of the valve A3-1, the valve B3-2 and the valve I3-9 and closing the other valves, the glycol solution which is just produced is input into the air cooler 1 through the circulating pump 8 to be cooled, then is jointly dealdehydized through the dealdehyding bed C5, then is filtered by the basket filter 6 to remove impurities, is cooled through the cooler 7 and then is collected in the storage tank.

The utility model discloses an embodiment of multiple mode can be realized to the opening and closing of regulation valve, and applicant no longer lists here one by one.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. A dealdehyding device comprises an air cooler (1) and a cooler (7), an ethylene glycol discharge pipeline is communicated with a circulating pump (8), the circulating pump (8) is communicated with the air cooler (1) through a pipeline, and is characterized in that,

the air cooler (1) is communicated with the aldehyde removing bed A (2) through a pipeline, a valve J (3-11) is arranged on a connecting pipeline, the aldehyde removing bed A (2) is communicated with the aldehyde removing bed B (4) through a pipeline, a valve D (3-4) and a valve E (3-5) are sequentially arranged on the connecting pipeline, the aldehyde removing bed B (4) is communicated with the basket filter (6) through a pipeline, the basket filter (6) is communicated with the cooler (7) through a pipeline, and a liquid level regulating valve (3-10) is arranged on the connecting pipeline;

the air cooler (1) is communicated with the aldehyde removal bed B (4) through a pipeline, a valve A (3-1), a valve C (3-3) and a valve E (3-5) are sequentially arranged on the connected pipeline, the aldehyde removal bed B (4) is communicated with the aldehyde removal bed C (5) through a pipeline, and a valve H (3-8) and a valve B (3-2) are sequentially arranged on the connected pipeline; the dealdehyding bed C (5) is communicated with the basket filter (6) through a pipeline, and a valve I (3-9) is arranged on the connected pipeline;

the dealdehyding bed B (4) is communicated with the basket filter (6) through a pipeline, and a valve G (3-7) is arranged on the connected pipeline;

the dealdehyding bed A (2) is communicated with the basket filter (6) through a pipeline, and a valve F (3-6) is arranged on the connected pipeline.

2. The aldehyde removing equipment according to claim 1, wherein the aldehyde removing bed A (2), the aldehyde removing bed B (4) and the aldehyde removing bed C (5) have the same structure, the aldehyde removing bed A (2) and the aldehyde removing bed B (4) have the same size, the diameter of the aldehyde removing bed C (5) is larger than that of the aldehyde removing bed A (2) and the aldehyde removing bed B (4), and the height of the aldehyde removing bed C (5) is higher than that of the aldehyde removing bed A (2) and the aldehyde removing bed B (4).

3. The apparatus according to claim 1, wherein the aldehyde removing bed A (2) comprises a housing, the housing is provided with a feed inlet A (2-5), a feed inlet A (2-2), a discharge outlet A (2-4) and a base (2-3), and the housing is filled with aldehyde removing resin (2-1).

4. The apparatus according to claim 1, wherein the basket filter comprises a housing, the housing is provided with a feed inlet and a discharge outlet (6-1, 6-2) at the left and right sides thereof, and a filter basket (6-3) is arranged in the housing.