CN209286985U - Outer cold filtration type exhaust gas absorption device - Google Patents

Abstract

The utility model discloses a kind of outer cold filtration type exhaust gas absorption device, absorption tower body include absorbing liquid collecting bin and primary filter storehouse and secondary filtration storehouse and three-stage filtration storehouse and top tower cap；Ecto-entad is provided with exhaust input tube at primary filter storehouse；It is disposed with absorbing liquid overflow port and absorbing liquid outlet and spare circulation fluid mouth and cleaning sewage draining exit from top to bottom on absorbing liquid collecting bin, on front side wall；It is connected by an outlet tube with clean filter tank in absorbing liquid exit; a crystal filter is internally provided in clean filter tank; a crystallization backwash water inlet is provided on rear side of crystal filter; the front end of clean filter tank is connected by a cooling tank valve with cooling tank; the utility model is connected by the way that spare circulation fluid mouth is arranged with circulating pump on absorbing liquid collecting bin; the loop direction that absorbing liquid can be controlled by spare circulation fluid valve, realizes the internal cleaning of the utility model under non-stop-machine state.

Description

Outer cold filtration type exhaust gas absorption device

Technical field

The utility model belongs to toxic and harmful gas abatement equipment technical field, and in particular to a kind of outer cold filtration type is useless Aspiration receiving apparatus.

Background technique

As the increasing of national environmental protection pollution treatment dynamics generally makes in technical fields such as chemical industry, medicine, pesticide, biotechnologies Harmless treatment is carried out to toxic, the pernicious gas that are discharged in production process with packed absorber or spray absorber.

The absorption overwhelming majority of toxic and harmful gas belongs to exothermic reaction, all the time, the absorbing liquid temperature in absorption tower It constantly increasing in use, heat can not be taken out of again, so that assimilation effect sharply declines, it can only be fresh absorbing liquid be continuously replenished Mode adjusted, to maintain normal production, moreover, because the continuous dilution of absorbing liquid, concentration can not improve, cause technique On can not recycling and reusing, waste is serious.

In addition, some saline crystallizations are easily generated in absorbing liquid in the absorption process of exhaust gas, if cannot disappear in time These solids are removed or reduced, can be resulted in blockage to a whole set of absorption plant, entire packing layer will become a salt and stick together when serious, in turn Will result in absorption tower moment collapses.In addition, as absorbing liquid circulating pump, if impeller will soon containing crystallization in liquid Abrasion is scrapped, and mechanical seal also needs often to replace, and maintenance cost and workload are very big.

It is non-as industry the R&D personnel in view of the generally existing problem above of tail gas absorption equipment currently on the market Often it is necessary to research and develop a kind of absorption of external cooling device that can greatly improve absorbability again with good corrosion resistance to set It is standby, the heat that toxic and harmful gas is released in absorbing treatment process can be taken away in time by cooler, while in absorbing liquid A kind of fast disassembly type crystal filter is added in the circulatory system, it, can if occurring the symptom of a trend that this absorbing liquid contains crystallization in technique It easily solves in time, and pressure is reduced to subsequent recovery process, make the absorption of toxic and harmful gas normal, high The lower operation of effect.

Utility model content

To overcome the shortcomings of the existing technology, the utility model provides a kind of outer cold filtration type exhaust gas absorption device, lead to It crosses and cooling and filter device is set in tower body bottom, further it can be carried out while to tower body absorbed inside liquid cooling but Filtering, the working efficiency on such absorption tower is further improved with this.

To realize the above-mentioned technical purpose, the utility model uses following scheme: a kind of outer cold filtration type waste gas absorption dress It sets comprising an absorption tower body, the absorption tower body include absorbing liquid collecting bin and primary filter storehouse and secondary filtration storehouse It is waste gas outlet at the top center of tower cap, in primary filter storehouse and secondary filtration with the tower cap in three-stage filtration storehouse and top Spray equipment, and corresponding each spray equipment, the outer wall in primary filter storehouse and secondary filtration storehouse are respectively arranged with inside storehouse On be provided with absorbing liquid supply opening；One is all provided on the front side wall in primary filter storehouse and secondary filtration storehouse and three-stage filtration storehouse A feeding port；Ecto-entad is provided with exhaust input tube at primary filter storehouse；One is provided on the outer wall in primary filter storehouse A filler；On absorbing liquid collecting bin, it is disposed with absorbing liquid overflow port from top to bottom on front side wall and absorbing liquid goes out Mouth and spare circulation fluid mouth and cleaning sewage draining exit；It is connected by an outlet tube with clean filter tank in absorbing liquid exit, It is internally provided with a crystal filter in clean filter tank, a crystallization backwash water inlet is provided on rear side of crystal filter Mouthful, the front end of clean filter tank is connected by a cooling tank valve with cooling tank, and the cooling tank can be individually can also Think multiple；The rear end of cooling tank is connected by a cooling switching valve with circulating pump, and the water outlet and absorbing liquid of circulating pump supply Mouth is answered to connect.

On spare circulation fluid mouth, is connected by a spare circulation pipe with circulating pump, be arranged on spare circulation pipe There is a spare circulation fluid valve.

Axial inside the cooling tank to be provided with more cooling tubes, the cooling tube axially penetrates through cooling tank both ends, And more cooling tubes are uniformly arranged inside cooling tank；Cooling water intake and a cooling water are provided on cooling tank wall Water outlet.

The quantity and size of the cooling tank is with the selection amount of cooler area and uses the cooling water situation of unit Depending on.

The front side of crystal filter is provided with a backwash crystallization outlet on clean filter tank.

It is designed above the utility model has the following beneficial effects: the utility model passes through, by absorbing liquid collecting bin It is arranged in series clean filter tank and multiple cooling tanks, the effect by circulating pump will convey again after absorbing liquid filtering and cooling To absorbing liquid supply opening, circulation fluid is recycled, furthermore, the utility model in absorbing liquid cooling procedure, by Crystal filter is set on clean filter tank, and backwash crystallization outlet is set in the front side of clean filter tank, is set by such It sets, filtered crystal will be directly taken out in backwash crystallization outlet on clean filter tank, and crystal can be prevented to suction Tower body and circulating pump is received to cause to damage, furthermore, the utility model on absorbing liquid collecting bin by be arranged spare circulation fluid mouth and Circulating pump connection, and a spare circulation fluid valve is set on spare circulation pipe, it can be controlled and be inhaled by spare circulation fluid valve The loop direction for receiving liquid, when carrying out crystal cleaning, by opening spare circulation fluid valve after closing cooling switching valve, with this Realize it is of short duration the internal cleaning of the utility model is realized under non-stop-machine state without filtering cooling cycle, to sum up, this is practical New structural design is novel, easy to use, is a kind of ideal outer cold filtration type exhaust gas absorption device.

Detailed description of the invention

Fig. 1 is absorption tower body schematic view of the front view；

Fig. 2 is that the utility model is mounted on the overlooking structure diagram on absorption tower body；

Fig. 3 is the utility model cooling tank schematic diagram of internal structure；

In attached drawing, 1, absorption tower body, 2, absorbing liquid collecting bin, 3, primary filter storehouse, 4, secondary filtration storehouse, 5, three-stage filtration Storehouse, 6, tower cap, 7, waste gas outlet, 8, clean filter tank, 9, cooling tank, 11, cleaning sewage draining exit, 12, spare circulation fluid mouth, 13, Absorbing liquid outlet, 14, absorbing liquid overflow port, 15, exhaust input tube, 16, filler, 17, feeding port, 18, absorbing liquid supply opening, 21, outlet tube, 22, cooling tank valve, 23, spare circulation pipe, 24, spare circulation fluid valve, 25, circulating pump, 26, water outlet, 27, cooling switching valve, 81, backwash crystallization outlet, 82, crystal filter, 83, crystallization backwash water inlet, 84, cooling pot valve Door, 91, cooling water intake, 92, cooling water outlet, 93, cooling tube.

Specific embodiment

Referring to shown in attached drawing, a kind of outer cold filtration type exhaust gas absorption device comprising an absorption tower body 1, it is described Absorption tower body 1 includes the tower of absorbing liquid collecting bin 2 and primary filter storehouse 3 and secondary filtration storehouse 4 and three-stage filtration storehouse 5 and top Cap 6 is waste gas outlet 7 at the top center of tower cap 6, is respectively arranged with spray inside primary filter storehouse 3 and secondary filtration storehouse 4 Device, and corresponding each spray equipment, are provided with absorbing liquid supply on the outer wall in primary filter storehouse 3 and secondary filtration storehouse 4 Mouth 18；It is all provided with a feeding port 17 on the front side wall in primary filter storehouse 3 and secondary filtration storehouse 4 and three-stage filtration storehouse 5, fills out The effect of material mouth 17 is direct progress material cleaning, can directly be replaced to filler；Ecto-entad is set at primary filter storehouse 3 It is equipped with exhaust input tube 15；A filler 16 is provided on the outer wall in primary filter storehouse 3, it can be by filler to the present apparatus Inside carries out feed flow；It is disposed with absorbing liquid overflow port 14 from top to bottom on absorbing liquid collecting bin 2, on front side wall and inhales Liquid outlet 13 and spare circulation fluid mouth 12 and cleaning sewage draining exit 11 are received, the purpose of the cleaning sewage draining exit 11 is convenient to use Person inside absorbing liquid collecting bin 2 to clearing up；Connected at absorbing liquid outlet 13 by an outlet tube 21 and clean filter tank 8 It connects, is internally provided with a crystal filter 82 in clean filter tank 8, it is anti-that the rear side of crystal filter 82 is provided with a crystallization Water inlet 83 is rinsed, the front end of clean filter tank 8 is connected by a cooling tank valve 84 and cooling tank 9, the cooling tank 9 It can be individually or multiple；The rear end of cooling tank 9 is connected by a cooling switching valve 27 and circulating pump 25, circulating pump 25 water outlet and absorbing liquid supply opening 18 connection；The front side of crystal filter 82 is provided with one instead on clean filter tank 8 Crystallization outlet 83 is rinsed, is rinsed inside clean filter tank 8 with this hole by external water pressure, its cleaning inside health is guaranteed with this.

Embodiment: the utility model by designing above, by being arranged in series clean filter on absorbing liquid collecting bin 2 Tank 8 and multiple cooling tanks 9, the effect by circulating pump 25 will be delivered to again absorbing liquid supply after absorbing liquid filtering and cooling In mouth 18, circulation fluid is recycled, furthermore, the utility model is in absorbing liquid cooling procedure, by clean filter tank 8 Upper setting crystal filter 82, and backwash crystallization outlet 83 is set in the front side of clean filter tank 8, it, will by such setting Filtered crystal directly takes out in backwash crystallization outlet 81 on clean filter tank 8, crystal can be prevented to absorption Tower body and circulating pump cause to damage.

On the basis of the above structure, on spare circulation fluid mouth 12, pass through a spare circulation pipe 23 and circulating pump 25 connections, are provided with a spare circulation fluid valve 24, user can pass through spare circulation fluid valve on spare circulation pipe 23 The loop direction of 24 control absorbing liquids, when carrying out crystal cleaning, by opening spare circulation after closing cooling switching valve 27 24, liquid valve, with this realize it is of short duration without filtering cooling cycle, under non-stop-machine state realize the utility model inside it is clear Reason.

Further, it is the cooling effect for improving the utility model, is set as shown in figure 3,9 inside of cooling tank is axial More cooling tubes 93 are equipped with, cooling tube 93 axially penetrates through cooling tank both ends, and more cooling tubes 93 are uniformly distributed inside cooling tank 9 Setting；Cooling water intake 91 and a cooling water outlet 92 are provided on 9 outer wall of cooling tank；The number of the cooling tank 9 Amount and size are depending on the cooling water situation of the selection amount of cooler area and use unit.

To sum up, the utility model novel in structural design, it is easy to use, it is a kind of ideal outer cold filtration type waste gas absorption Device.

Claims (4)

1. a kind of outer cold filtration type exhaust gas absorption device comprising an absorption tower body, the absorption tower body include absorbing The tower cap of liquid collecting bin and primary filter storehouse and secondary filtration storehouse and three-stage filtration storehouse and top is at the top center of tower cap Waste gas outlet is respectively arranged with spray equipment, and corresponding each spray equipment inside primary filter storehouse and secondary filtration storehouse, Absorbing liquid supply opening is provided on the outer wall in primary filter storehouse and secondary filtration storehouse；It is characterized by: in primary filter storehouse and A feeding port is all provided on the front side wall in secondary filtration storehouse and three-stage filtration storehouse；Ecto-entad is arranged at primary filter storehouse There is exhaust input tube；A filler is provided on the outer wall in primary filter storehouse；On absorbing liquid collecting bin, on front side wall It is disposed with absorbing liquid overflow port and absorbing liquid outlet and spare circulation fluid mouth and cleaning sewage draining exit from top to bottom；It is absorbing Liquid exit is connected by an outlet tube with clean filter tank, is internally provided with a crystal filter in clean filter tank, A crystallization backwash water inlet is provided on rear side of crystal filter, the front end of clean filter tank passes through a cooling tank valve It is connected with cooling tank, the cooling tank can be single or be multiple；The rear end of cooling tank passes through a cooling switching valve It is connected with circulating pump, the water outlet of circulating pump is connected with absorbing liquid supply opening.

2. outer cold filtration type exhaust gas absorption device as described in claim 1, it is characterised in that: on spare circulation fluid mouth, It is connected by a spare circulation pipe with circulating pump, and a spare circulation fluid valve is provided on spare circulation pipe.

3. outer cold filtration type exhaust gas absorption device as described in claim 1, it is characterised in that: the cooling tank inner shaft To more cooling tubes are provided with, the cooling tube axially penetrates through cooling tank both ends, and more cooling tubes are inside cooling tank It is uniformly arranged；Cooling water intake and a cooling water outlet are provided on cooling tank wall.

4. outer cold filtration type exhaust gas absorption device as described in claim 1, it is characterised in that: the front side of crystal filter, Clean filter tank is provided with a backwash crystallization outlet.