CN206198880U

CN206198880U - Formaldehyde plant gas-filtering device

Info

Publication number: CN206198880U
Application number: CN201621305533.1U
Authority: CN
Inventors: 周斌贤
Original assignee: WUXI HUALI PETROLEUM AND CHEMICAL ENGINEERING Co Ltd
Current assignee: WUXI HUALI PETROLEUM AND CHEMICAL ENGINEERING Co Ltd
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2017-05-31
Anticipated expiration: 2026-11-30

Abstract

The utility model is related to a kind of formaldehyde plant gas-filtering device, including base, casing is installed on the base, one end middle part of the casing is provided with input port, the other end middle part of the casing is provided with delivery outlet, the equipped at outlet port is provided with back-fire relief silk screen, interval is provided with multiple coarse filters successively from top to bottom for inside one end of the casing, interval is provided with multiple fine filters to the inside other end of the casing successively from top to bottom, and each coarse filter and each fine filter are corresponded.The utility model compact conformation, rationally, it is easy to operate, by redesigning the mounting structure of filter, the condensate liquid in casing is not piled up, can along the order of support base down pile up after unified discharge.

Description

Formaldehyde plant gas-filtering device

Technical field

The utility model is related to filter technical field, especially a kind of formaldehyde plant gas-filtering device.

Background technology

Air cleaner be widely used in oil, chemical industry, metallurgy, electric power, machinery etc. need it is net to the process gas in device The industry of change and department.

During due to production formaldehyde secondary filter need to be carried out to the process gas in device.Generating the reaction of formaldehyde needs to pass through Expensive catalyst is carried out, and the quality requirement for gas is very high, can otherwise corrode catalyst, longevity when general catalyst Life must stop at 2~3 months, and during more catalyst changeout, produce wholesale cost to waste.And the structure of horizontal placement is unfavorable The exclusion of condensed fluid in gas, causes paper filter core to tear, and changes filter core and is also required to parking.Frequently parking can be to factory Normal production and service life of equipment produce extreme influence.

In order to save the production run cost of factory, it is to avoid the catalysis in filter element and reactor is changed in frequently parking Agent, can for a long time using and the pneumatic filter that has outstanding filter capacity be just highly desirable to.

Filter of the prior art, its floor space is big, and weight is big, and the condensed water in casing is susceptible to pile up, It is difficult to exclude.

Utility model content

The applicant is for the shortcoming in above-mentioned existing production technology, there is provided a kind of formaldehyde plant gas mistake rational in infrastructure Filter device, so that using vertical structure, it is ensured that in the case that the harmful substance in gas is removed, condensate liquid therein can more had Imitate and quickly exclude, and solve the problems, such as catalytic erosion.

The technical scheme that the utility model is used is as follows：

A kind of formaldehyde plant gas-filtering device, including base, are provided with casing, one end of the casing on the base Middle part is provided with input port, and the other end middle part of the casing is provided with delivery outlet, and the equipped at outlet port is provided with back-fire relief silk screen, Interval is provided with multiple coarse filters successively from top to bottom for inside one end of the casing, and the inside other end of the casing is from upper Down interval is provided with multiple fine filters successively, and each coarse filter and each fine filter are corresponded.

As the further improvement of above-mentioned technical proposal：

The tapered structure in the two ends of the casing；

The rear and front end of the casing is separately installed with maintenance door.

The beneficial effects of the utility model are as follows：

The utility model compact conformation, rationally, it is easy to operate, by redesigning the mounting structure of filter, make casing Interior condensate liquid will not be piled up, can along the order of support base down pile up after unified discharge.

The utility model also has the following advantages that：

(1) service life of paper filter core in catalyst reactor and filter is improve, production is reduced and is safeguarded into This.

(2) device fabrication cost is reduced.

(3) content of harmful substance in the waste gas of process units exclusion is reduced, is conducive to environmental protection.

(4) filter capacity improves 40% in the case of identical device volume.

(5) SR declines 20%, saving energy consumption.

(6) filter core service life extends more than 3 times.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the full sectional view in Fig. 1 along Section A-A.

Fig. 3 is the side view of Fig. 1.

Wherein：1st, input port；2nd, casing；3rd, coarse filter；4th, fine filter；5th, base；6th, back-fire relief silk screen；7th, export Mouthful；8th, maintenance door.

Specific embodiment

Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is illustrated.

As shown in Figure 1, Figure 2 and Figure 3, the formaldehyde plant gas-filtering device of the present embodiment, including base 5, pacifies on base 5 Equipped with casing 2, one end middle part of casing 2 is provided with input port 1, and the other end middle part of casing 2 is provided with delivery outlet 7, delivery outlet 7 Place is provided with back-fire relief silk screen 6, and interval is provided with multiple coarse filters 3 successively from top to bottom for inside one end of casing 2, casing 2 Interval is provided with multiple fine filters 4 to the internal other end successively from top to bottom, each coarse filter 3 and each fine filter 4 one One correspondence.

The tapered structure in the two ends of casing 2.

The rear and front end of casing 2 is separately installed with maintenance door 8.

In actual use, gas enters from input port 1, is carried out respectively through coarse filter 3 and fine filter 4 Filter, the gas after filtering is excluded from delivery outlet 7.During coming, produced condensed water drips from top to down, vertical The filter of installation, condensed water is piled up from top to bottom, is finally discharged from the pipeline of bottom.

In use, the condensate liquid in gas needs effectively quick discharge to the utility model, extends making for paper filter core With the life-span, increase the filter area of FU volume, reduce equipment cost, optimization filter effect is so as to extend making for catalyst With the life-span, the stop frequency produced because changing filter core or catalyst is reduced, improve the average product of package unit unit interval Energy.

The utility model effectively eliminates condensate liquid：In original horizontal type structure, filter core only has apart from device bottom 10mm, such as crosses conference and causes to shake and cause paper filter core to tear, but the spacing of 10mm is unfavorable for that the discharge of condensate liquid is caused Hydrops, causes paper filter core to make moist, and also results in tear.

The utility model makes structure into vertical, the spacing of filter core and device bottom can be extended into 30~50mm, matches somebody with somebody The leakage fluid dram that conjunction is additionally arranged at the bottom, the hydrops for being is easily drained, so as to protect paper filter core not make moist, increases the service life.

The utility model increases filter area：Original horizontal type structure, filter core is horizontal arrangement, and floor space is big, and Top cover weight is excessive, and dismounting is all needed to use lifting device, it has not been convenient to filter core is changed when repairing.

After the utility model makes structure into vertical structure, filter core can reduce floor space, vertical cylinder with vertical distribution Body is more beneficial for condensate liquid discharge.Again by the form opened the door in side, only manually need to can just open equipment carries out filter element replacing. Reduce maintenance cost.

The utility model prolonging service life of filter elements：Original pneumatic filter is filtered for monopole, and bottom is easily accumulated Liquid, will need to change a filter core for every 2~3 months, and operation and equipment cost are very big.Such as it is changed without, the resistance of filter core will It is excessive, improve the pressure in whole system, influence safety in production.And catalyst expensive in subsequent reactor can be produced rotten Erosion is acted on, and reduces the service life of catalyst.A catalyst need to just be changed within general 2~3 months, improve production cost.

The utility model vertical gas filter employs the structure of economic benefits and social benefits filtering, is divided into front end primary filter and rear end essence Close filtering.Front end primary filter can remove the most of impurity in gas.Rear end is secondary filter, it is ensured that by gas after equipment The quality of body, will not produce corrosiveness to the catalyst in device subsequent reactor, can prolong the service life of catalyst Length reduced production cost to 1 year.

In addition when pneumatic filter General Maintenance, need to only change front end primary filter core just can be so that rear end precision Filter element can To use at least 18 months, maintenance cost is greatly reduced.The price of front end filter core is about 10,000 yuan, rear end precision Filter element Price is about 50,000 yuan.

The reasonability of manufacturing process：All design premises must assure that equipment can be implemented completely in process, it is to avoid Cause difficulty of processing and increase processing cost.Therefore, coordinate design, production, technology, technique determine reasonably before construction Production technology, it is ensured that the quality and project of product can reach design effect.

It, to explanation of the present utility model, is not the restriction to utility model that above description is, what the utility model was limited Scope within protection domain of the present utility model, can make any type of modification referring to claim.

Claims

1. a kind of formaldehyde plant gas-filtering device, it is characterised in that：Including base (5), casing is installed on the base (5) (2), one end middle part of the casing (2) is provided with input port (1), and the other end middle part of the casing (2) is provided with delivery outlet (7), delivery outlet (7) place is provided with back-fire relief silk screen (6), and interval is pacified successively from top to bottom for inside one end of the casing (2) Equipped with multiple coarse filters (3), interval is provided with multiple fine filters to the inside other end of the casing (2) successively from top to bottom (4), each coarse filter (3) and each fine filter (4) are corresponded.

2. formaldehyde plant gas-filtering device as claimed in claim 1, it is characterised in that：The two ends of the casing (2) into Pyramidal structure.

3. formaldehyde plant gas-filtering device as claimed in claim 1, it is characterised in that：The rear and front end of the casing (2) It is separately installed with maintenance door (8).