CN104174260B - A kind of absorption column of gas and using method thereof - Google Patents
A kind of absorption column of gas and using method thereof Download PDFInfo
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- CN104174260B CN104174260B CN201410436382.2A CN201410436382A CN104174260B CN 104174260 B CN104174260 B CN 104174260B CN 201410436382 A CN201410436382 A CN 201410436382A CN 104174260 B CN104174260 B CN 104174260B
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Abstract
The present invention relates to the absorption of technical field, washing, the waste gas treatment process such as chemical industry, oil refining, environmental protection, be specifically related to a kind of absorption column of gas and using method thereof.The absorption column of gas proposed has gas absorbing device (1), gas absorbing device (1) has orifice plate (7) and more than three GAS ABSORPTION pipes (8), GAS ABSORPTION pipe (8) openend is fixed on the installing hole of orifice plate (7), the upper uniform sucking of GAS ABSORPTION pipe (8)；Gas absorbing device (1) is divided into GAS ABSORPTION district (9) and gas zone to be absorbed (10) by orifice plate (7).Use above-mentioned gas absorption tower to absorb gas, it is possible to increase Gas-liquid interfacial area in unit volume, strengthen GAS ABSORPTION, improve production efficiency；Device structure simplify, easy for installation flexibly, adapt to the multifarious demand of industrial applications；Reduce absorbing liquid requirement, reduce production cost, the gas of discharge can be made to be fully purified when processing waste gas, environmental protection and saving.
Description
Technical field
The present invention relates to the technical process such as the absorption of the technical fields such as chemical industry, oil refining, environmental protection, washing, exhaust-gas treatment, be specifically related to a kind of absorption column of gas and using method thereof.
Background technology
In the fields such as chemical industry, oil refining, environmental protection, needing to carry out the Physical Absorption of gas by mass-transfer progress or chemical absorbing realizes gas liquid reaction or exhaust-gas treatment, absorption column of gas is used widely due to the advantage having treating capacity big.In absorption column of gas, bubble tower (also known as bubble type absorption column of gas) is relative to packed tower, and pressure drop is little, device structure is simple, can form the gas-liquid contact operating mode of laminar flow gentleness, and utilization rate is higher.Traditional bubble tower, if built-in dried layer horizontal plate, column plate has the special device such as gas distributor that gas is separated into bubble, and equipped with overflow pipe, during operation, liquid is entered by tower top, decline through overflow pipe step by step tray, and on column plate, accumulating liquid layer, gas is entered by the bottom of tower, the gas distributor on column plate, through liquid layer, bubbling and go out, thus two-phase can be fully contacted, and makes liquid fully absorb the easily dissolved component in gas.
For the benefit of GAS ABSORPTION or reaction, has had some optimization means to gas-liquid mass transferring efficiency in tradition bubble tower at present:
CN202078849U proposes a kind of bubbling device removing sour gas, at cabinets cavity, gas distribution supervisor is set, one end of air inlet pipe is stretched into cabinets cavity and is connected with gas distribution supervisor and communicates, the some gas distributionbranch pipes being connected with gas distribution supervisor and communicating are set and the some groups of playpipes being connected with gas distributionbranch pipe and communicating are set, playpipe lower end and outlet thereof are positioned at the absorption sap cavity of cabinets cavity, the outlet of all of playpipe is respectively positioned on same level line, during use, containing SO2Enter lime stone solution after waste gas gas distribution and produce chemical action, SO2Being absorbed, this bubbling device arranges some groups of playpipes on each gas distributionbranch pipe, and often can arrange many playpipes in group increases the mouth of pipe gross area absorbed in sap cavity, increases exhaust-gas treatment amount in the unit interval；
CN101450279A proposes the bubble tower of a kind of sour gas for removing in dusty gas, on the top of tower body, air inlet is set, one or more layers spray mother's pipe of ejecting liquid is set below air inlet, the female pipe of the most each spray is provided with multiple nozzle, it is provided with one end submergence playpipe in a liquid below dividing plate below the female pipe of spray, when this bubble tower uses, gas is first after the spraying and cooling area spraying cooling on dividing plate top, blast from playpipe the liquid in absorption tower, carry out gas-liquid contact absorption；
CN101234318A proposes the bubbling column reactor of one band " solution-air " dispersion mixing device, installs the double-layered stirrer coaxial with tower body at tower bottom, uses stirring at the bottom of tower to reduce bubble size；
The bubble tower that CN101721826A proposes, including cylinder, vapor distributor, liquid phase distributor, downspout and at least one bubbling bed, vapor distributor is arranged on cylinder bottom, liquid phase distributor is arranged on cylinder top, bubbling bed is arranged between vapor distributor and vapor distributor, being tower tray assembly bottom bubbling bed, tower tray assembly includes the bubbling pulse valve that bubbling bed column plate and distribution are arranged on bubbling bed column plate；
The multilevel deflector-type bubble tower reactor that CN101653711A proposes, it is provided with conversion zone, deflector, liquid phase distributor and microvesicle generators, conversion zone is connected deflector by reaction column and constitutes, liquid phase distributor is positioned at tower body upper end, microvesicle generators is positioned at tower body lower end, it is provided with liquid phase feeding mouth in conversion zone upper end, it is provided with gas-phase feed mouth in conversion zone lower end, during use, phase feed is squeezed in tower by compressor via microvesicle generators, under buoyancy, microvesicle moves upward, with liquid phase feed counter current contacting, and under the guide functions of deflector, there is respective reaction.
In the optimization operation of these bubble towers above-mentioned, either use and increase stirring at the bottom of playpipe, first spraying cooling, tower, bubbling-spray combination or multilevel deflector, bubble is all that certain same level position moves upward after being formed again and contacts absorption with liquid in tower, Gas-Liquid Dispersion relies primarily on gas and enters the Turbulent Kinetic that the buoyancy in tower is formed, its energy is less, gas is easily assembled and is difficult to disperse, in tower, bubble size is big, in unit volume, Gas-liquid interfacial area is little, affecting bubble tower production efficiency, Gas-Liquid Dispersion effect is undesirable.
Summary of the invention
It is an object of the invention on the basis of existing technology, a kind of absorption column of gas is provided, the drawback that gas liquid interfacial area is little to overcome that bubble size in existing absorption column of gas tower is big, in unit volume, the absorption column of gas using the present invention carries out GAS ABSORPTION, increase Gas-liquid interfacial area in unit volume, enhance gas absorption process, improve absorption tower production efficiency；Device structure simplify, easy for installation flexibly, adapt to the multifarious demand of industrial applications；Decrease absorbing liquid requirement, reduce production cost, make the gas of discharge be fully purified during exhaust-gas treatment, also reach discharging standards, environmental protection and saving；Invention also provides the using method of this absorption column of gas.
For achieving the above object, the present invention uses the technical scheme to be:
A kind of absorption column of gas, has gas feed and gas vent, it is characterised in that:
Described absorption column of gas has a gas absorbing device more than two, described gas absorbing device more than two or shared tower body or be respectively provided with single unit tower tower body；
Described gas absorbing device has the single-ended open type GAS ABSORPTION pipe of orifice plate and more than three；Described orifice plate is fixing with described tower body inwall or described unit tower tower body inwall to be connected, gas absorbing device is divided into two parts by orifice plate, i.e. GAS ABSORPTION district and gas zone to be absorbed, described GAS ABSORPTION district is positioned at the side of gas absorbing device orifice plate, described GAS ABSORPTION pipe is positioned at described GAS ABSORPTION district and the most not in the absorbing liquid in GAS ABSORPTION district, and described gas zone to be absorbed is positioned at the opposite side of gas absorbing device orifice plate；
The openend of described GAS ABSORPTION pipe is fixed on the installing hole of orifice plate by sealing the suitable forms such as welding, threaded or bolt connection, and GAS ABSORPTION tube cavity connects with described gas zone to be absorbed；
GAS ABSORPTION pipe is evenly equipped with sucking, described sucking aperture is below grade, make under duty GAS ABSORPTION pipe external and internal pressure difference promote under gas can through sucking enter GAS ABSORPTION district absorbing liquid in, and absorbing liquid cannot pass through sucking entrance GAS ABSORPTION tube cavity；
Described gas feed connects with the gas zone to be absorbed of least one set gas absorbing device, and described gas vent connects with the GAS ABSORPTION district of least one set gas absorbing device.
Absorption column of gas of the present invention at least following three kinds of arrangements:
Scheme one:
Absorption column of gas has gas absorbing device more than two, each group gas absorbing device is connected up and down and shares tower body, gas feed is located on the lower tower lid on the downside of tower body, gas vent is located on the upper tower lid on the upside of tower body, orifice plate horizontally set also fixing with tower body inwall is connected, gas absorbing device is divided into two parts by orifice plate, i.e. GAS ABSORPTION district on the upside of orifice plate and the gas zone to be absorbed on the downside of orifice plate；GAS ABSORPTION tube opening end is fixed on the installing hole of orifice plate；Gas feed connects with the gas zone to be absorbed of lower side gas train, and gas vent connects with the GAS ABSORPTION district of top side gas train.
In this programme, gas the most upwards enters GAS ABSORPTION tube cavity through installing hole, GAS ABSORPTION tube opening end from gas zone to be absorbed, and be upwardly into GAS ABSORPTION district through the sucking on GAS ABSORPTION pipe and carry out gas-liquid contact absorption, after gas absorbing device more than two, complete the GAS ABSORPTION of more than two-stage.
Scheme two:
Absorption column of gas has gas absorbing device more than two, connect about each group gas absorbing device and share tower body, gas feed is located on the right tower lid on the right side of tower body, gas vent is located on the left tower lid on the left of tower body, described orifice plate is vertically arranged and fixing with tower body inwall is connected, gas absorbing device is divided into two parts by orifice plate, i.e. GAS ABSORPTION district on the left of orifice plate and the gas zone to be absorbed on the right side of orifice plate；GAS ABSORPTION tube opening end is fixed on the installing hole of orifice plate；Being additionally provided with liquid barrier between two adjacent groups gas absorbing device, have gas passage between liquid barrier and tower body inwall, liquid barrier is higher than GAS ABSORPTION district high level；Gas feed connects with the gas zone to be absorbed of rightmost side gas train, and gas vent is connected by gas passage with the GAS ABSORPTION district of leftmost side gas train.
In this programme, gas enters GAS ABSORPTION tube cavity through installing hole, GAS ABSORPTION tube opening end the most to the left from gas zone to be absorbed, and enter GAS ABSORPTION district to the left through the sucking on GAS ABSORPTION pipe and carry out gas-liquid contact absorption, after gas absorbing device more than two, complete the GAS ABSORPTION of more than two-stage.
Scheme three:
Absorption column of gas has gas absorbing device more than two, and often group gas absorbing device is respectively provided with single unit tower tower body one unit tower of composition, and unit tower serial or parallel connection or serial-parallel mirror connect and compose absorption column of gas；
Fixing in orifice plate is horizontally set at unit tower and with unit tower tower body inwall and be connected, gas absorbing device is divided into two parts by orifice plate, i.e. GAS ABSORPTION district on the upside of orifice plate and the gas zone to be absorbed on the downside of orifice plate；GAS ABSORPTION tube opening end is fixed on the installing hole of orifice plate；The upper and lower both sides of unit tower tower body are respectively provided with Shang Tagai and Xia Tagai, lower tower lid has unit tower gas feed, upper tower lid has unit tower gas vent；The gas feed of described absorption column of gas is connected by its unit tower gas feed with the gas zone to be absorbed of gas absorbing device at least one unit tower, and the gas vent of described absorption column of gas is connected by its unit tower gas vent with the GAS ABSORPTION district of gas absorbing device at least one unit tower.
Absorption column of gas described in this programme, further, plural unit tower is connected in parallel Component units tower group, plural unit tower group is connected in series the absorption column of gas described in composition, unit tower common gas intake header and gas outlet header in described unit tower group, between adjacent cells tower group, the gas outlet header of previous unit tower group interconnects with the gas inlet manifold of a rear unit tower group；The gas feed of described absorption column of gas connects with the gas feed house steward of at least one unit tower group, and the gas vent of described absorption column of gas connects with the gas outlet header of at least one unit tower group；In a preferred embodiment, 2～4 unit tower Component units tower groups in parallel, the unit tower group of 2～3 series connection can be used to constitute absorption column of gas.
In this programme, gas the most upwards enters GAS ABSORPTION tube cavity through installing hole, GAS ABSORPTION tube opening end from the gas zone to be absorbed of unit tower, and be upwardly into GAS ABSORPTION district through the sucking on GAS ABSORPTION pipe and carry out gas-liquid contact absorption, after the gas absorbing device of two or more unit tower, complete GAS ABSORPTION.
In absorption column of gas of the present invention, the sucking on GAS ABSORPTION pipe is that aperture is in 0.05 μm～the hole of 1mm；So, when gas to be absorbed is through GAS ABSORPTION pipe, may be partitioned into minute sized minute bubbles, increase gas liquid interfacial area in unit volume.
In absorption column of gas of the present invention, gas absorbing device is provided with fluid infusion mouth and/or evacuation port, and fluid infusion mouth is arranged on above GAS ABSORPTION district, it is simple to observes and supplements absorbing liquid to GAS ABSORPTION district in time；Evacuation port is located at bottom GAS ABSORPTION district, it is simple to the emptying rate of liquid when absorbing liquid more renewed or maintenance.
In absorption column of gas of the present invention, the preferred stainless steel of material, polyethylene, polyamide, polypropylene or the polytetrafluoroethylene (PTFE) of absorption column of gas, to reduce the acidity of institute's absorption gas or the alkaline atmosphere corrosion failure to equipment, extension device service life.
Present invention also offers the using method on above-mentioned gas absorption tower, gas absorption process is carried out in the gas absorbing device of absorption column of gas, the absorbing liquid making GAS ABSORPTION district is totally submerged GAS ABSORPTION pipe, gas from gas import to be absorbed introduces absorption column of gas, first pass through the gas zone to be absorbed of gas absorbing device, successively through installing hole, GAS ABSORPTION tube opening end enters GAS ABSORPTION tube cavity, under pressure differential inside and outside GAS ABSORPTION pipe promotes, sucking on GAS ABSORPTION pipe, it is divided into the micro-bubble of homogeneous diameter, the absorbing liquid in entrance GAS ABSORPTION district carries out gas-liquid two-phase with absorbing liquid be fully contacted, realize GAS ABSORPTION, absorption column of gas is discharged in gas from gas outlet after gas absorbing device more than two absorbs.
Use the present invention, at least have the advantages that
null1、It is that same level position is formed in tower with bubble in existing bubble tower、Gas-Liquid Dispersion relies primarily on gas and enters the Turbulent Kinetic difference that the buoyancy in tower is formed，In the absorption column of gas of the present invention，Gas-Liquid Dispersion is dependent on the gas gas segmentation effect through GAS ABSORPTION pipe，Due to the uniform sucking in the GAS ABSORPTION pipe whole body，Dispersion bubble is formed along the GAS ABSORPTION pipe i.e. whole body up and down by regularity segmentation，Gas easily disperses，Again owing to sucking aperture is below grade，Gas is divided into micro-bubble，In tower, bubble size is little，Energy is big，In unit volume, bubble is uniform，Bubble one is segmented to be had little time to assemble and is i.e. fully contacted with absorbing liquid about，Increase Gas-liquid interfacial area in unit volume，Enhance gas absorption process，Owing to sucking is uniform pore size，Divided Air Bubble Size is uniform，Will not turbulization，Make Vapor recovery unit，Improve absorption column of gas production efficiency；
2, stir at the bottom of playpipe, first spraying cooling, tower with increasing of prior art, bubbling-spray combines or compared with the bubble tower of multilevel deflector, the absorption column of gas of the present invention is using gas absorbing device as absorptive unit, GAS ABSORPTION pipe and AND DEWATERING FOR ORIFICE STRUCTURE are simple, easily fabricated, without complicated stirring, spray or guiding device, making GAS ABSORPTION tower structure simplify, working service is convenient；Can be by arranging the gas absorbing device of many group series connection, vertical or horizontal tower body is used to arrange, the unit tower composition absorption column of gas that multiple serial or parallel connection or serial-parallel mirror connection are set can also be used, need and place, production scene situation according to GAS ABSORPTION, equipment is easy for installation flexibly, adapts to the multifarious demand of industrial applications；
3, the GAS ABSORPTION gas tower of the present invention is used, by increasing gas liquid interfacial area strengthening gas absorption process, absorption efficiency improves, while gas is fully absorbed, decrease absorbing liquid requirement, reduce production cost, when processing waste gas, the gas that can make discharge is fully purified and reaches discharging standards, environmental protection and saving.
The present invention can be used to absorb or process acidity or the alkaline gas such as sulfur dioxide, carbon dioxide, hydrogen chloride, hydrogen fluoride, hydrogen sulfide, ammonia or chlorine, and the absorbing liquid of employing can be to absorb alkalescence, the neutral or acid absorbing liquids such as the alkali metal absorbing liquid of above-mentioned gas, alkaline-earth metal absorbing liquid, amine-based absorption liquid, acids absorbing liquid or water.
Accompanying drawing explanation
Fig. 1 is the absorption column of gas overall structure schematic diagram of the present invention；
Fig. 2 is A-A direction view in Fig. 1；
Fig. 3 is the absorption column of gas overall structure schematic diagram two of the present invention；
Fig. 4 is the absorption column of gas overall structure schematic diagram three of the present invention；
Fig. 5 is unit tower enlarged drawing in Fig. 4.
In accompanying drawing: 1, gas absorbing device；2, tower body；3, Xia Tagai；4, gas feed；5, Shang Tagai；6, gas vent；7, orifice plate；8, GAS ABSORPTION pipe；9, GAS ABSORPTION district；10, gas zone to be absorbed；11, liquid level gauge；12, fluid infusion mouth；13, evacuation port；14, You Tagai；15, Zuo Tagai；16, liquid barrier；17, gas passage；18, unit tower；19, gas feed house steward I；20, gas outlet header I；21, gas feed house steward II；22, gas outlet header II；23, unit tower tower body；24, tower lid under tower body；25, unit tower gas feed；26, tower lid on tower body；27, unit tower gas vent；In figure, arrow represents gas flow.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the utility model is further elaborated by embodiment, but protection domain of the present utility model includes but not limited to this.
Embodiment one:
As shown in Figure 1-2, the absorption column of gas of the present invention, it is provided with three groups of gas absorbing devices 1, three groups of gas absorbing devices 1 share tower body 2, and tower body 2 vertical type cylinder shape is arranged, and tower body 2 and three groups of gas absorbing devices 1 all use stainless steel manufacture；
Tower body 2 upper and lower sides is respectively equipped with tower lid 5 and lower tower lid 3, sets gas feed 4, set gas vent 6 on Shang Tagai 5 on Xia Tagai 3；
Gas absorbing device 1 has orifice plate 7 and more than three GAS ABSORPTION pipes 8；Orifice plate 7 is the plectane with installing hole, it is horizontally set in tower body 2, and fixing with tower body 2 inwall be connected, so, gas absorbing device 1 is divided into two parts by orifice plate 7, GAS ABSORPTION district 9 on the upside of i.e. and the gas zone to be absorbed 10 of bottom, GAS ABSORPTION pipe 8 is positioned at GAS ABSORPTION district 9 and the most not in the absorbing liquid in GAS ABSORPTION district 9, and GAS ABSORPTION pipe 8 inner chamber connects with gas zone 10 to be absorbed；The single-ended opening of GAS ABSORPTION pipe 8, its openend is bolted form sealing and is fixed on the installing hole of orifice plate 7, downwardly orifice plate 7, its openend；
Position relationship between GAS ABSORPTION pipe 8, orifice plate 7 and tower body 2 is as shown in Figure 2, installing hole on orifice plate 7 and GAS ABSORPTION pipe 8 one_to_one corresponding, GAS ABSORPTION pipe 8 and installing hole coaxial communication, so, when GAS ABSORPTION pipe 8 is fixed on orifice plate 7 and when orifice plate 7 is horizontally installed in tower body 2, when gas flows through orifice plate 7 from bottom to top, first GAS ABSORPTION pipe 8 inner chamber can only be entered by the installing hole on orifice plate 7；When being embodied as, installing hole decision design becomes uniform on orifice plate 7, it is simple to gas uniform pickup, beneficially Vapor recovery unit；
GAS ABSORPTION pipe 8 is evenly equipped with the sucking (not shown) in below grade aperture, under duty, GAS ABSORPTION pipe 8 external and internal pressure difference promote under gas can through sucking enter GAS ABSORPTION district 9 absorbing liquid in and absorbing liquid cannot pass through sucking entrance GAS ABSORPTION pipe 8 inner chamber, when being embodied as, space in absorption column of gas is utilized for maximal efficiency, GAS ABSORPTION pipe 8 can the whole body uniform sucking, when flowing a gas through GAS ABSORPTION pipe 8, it is respectively formed continuous divided bubble along the outside all regions of GAS ABSORPTION pipe 8；Additionally, this sucking may be configured as circular hole, reduce gas by resistance during sucking, the aperture of sucking is arranged on 0.05 μm～1mm, and research finds, when sucking aperture is less than 0.05 μm, when absorbing gas, equipment vapour lock increases, and easily blocks, affects absorption column of gas properly functioning；When sucking aperture is more than 1mm, the bubble size that gas is divided into by sucking is big, Gas-liquid interfacial area is little, it is difficult to ensure that gas absorbed efficiency, and after sucking aperture is more than 1mm, absorbing liquid may pass through sucking and penetrates in GAS ABSORPTION pipe 8, can affect absorption column of gas and normally use time serious；
When being embodied as, orifice plate 7 can use the suitable forms such as sealing welding or Flange joint to be fixed on tower body 2 inwall, when using sealing Type of Welding, tower body 2 can be integrally manufactured, only go up tower lid 5 and lower tower lid 3 is flexibly connected or installs manhole in the 2-in-1 right position of tower body to facilitate equipment to install maintenance, orifice plate 7 is welded in tower body 2 inwall corresponding position, when using Flange joint form, tower body 2 can manufacture according to orifice plate 7 number segmentation, is fixed on flange position with Flange joint and by orifice plate 7 at segmentation；When being embodied as, GAS ABSORPTION pipe 8 openend can be welded by sealing, threaded or bolt type of attachment seals and is fixed on the installing hole of orifice plate 7, when using sealing Type of Welding, the direct coaxial welding in GAS ABSORPTION pipe 8 openend is fixed on installing hole, when using threaded form, GAS ABSORPTION pipe 8 openend is provided with external screw thread and installing hole is provided with internal thread, coordinate to screw by internal and external threads and get final product fixed gas absorption tube 8, when form with bolts, GAS ABSORPTION pipe 8 openend is provided with external screw thread matching with hollow nut, can fixed gas absorption tube 8 through installing hole tightening nuts by GAS ABSORPTION pipe 8 openend；
About orifice plate 7, GAS ABSORPTION pipe 8, the concrete structure of tower body 2 and between annexation, it will be appreciated by those skilled in the art that and solve, implementation below is similar, repeats the most one by one；
Being equipped with liquid level gauge 11, fluid infusion mouth 12 and evacuation port 13 in the GAS ABSORPTION district 9 of three groups of gas absorbing devices 1, liquid level gauge 11 is used for controlling absorbing liquid height, it is ensured that GAS ABSORPTION pipe 8 can be totally submerged in absorbing liquid；Fluid infusion mouth 12 is located at the top in GAS ABSORPTION district 9, in order to supplement absorbing liquid to GAS ABSORPTION district 9 in time；Evacuation port 13 is located at bottom GAS ABSORPTION district 9, it is simple to the absorbing liquid more renewed, or facilitates emptying rate of liquid when maintenance；
Three groups of gas absorbing devices 1 are setting up and down, under composition, in, upper three groups of gas absorbing devices being sequentially connected in series, gas feed 4 connects with the gas zone to be absorbed 10 of lower group of gas absorbing device 1, gas vent 6 connects with the GAS ABSORPTION district 9 of upper group of gas absorbing device 1, when neighbouring two groups of gas absorbing devices connect, the GAS ABSORPTION district 9 of lower group of gas absorbing device 1 connects with the gas zone to be absorbed about 10 of middle group of gas absorbing device 1, and the GAS ABSORPTION district 9 of middle group of gas absorbing device 1 connects with the gas zone to be absorbed about 10 of upper group of gas absorbing device 1.
Outside it should be noted that absorption column of gas decapacitation enough selects stainless steel to manufacture, it is also possible to select polyethylene, polyamide, polypropylene or polytetrafluoroethylene (PTFE) manufacture, so that absorption column of gas can be corrosion-resistant, low cost of manufacture and Portable durable.
Using the absorption column of gas shown in Fig. 1 to absorb and process the waste gas produced in certain chemical plant production process, its technological process is as follows:
Waste gas absorption process is carried out in three groups of gas absorbing devices 1 of absorption column of gas, the absorbing liquid making each group of gas absorbing device 1 GAS ABSORPTION district 9 is totally submerged GAS ABSORPTION pipe 8, the waste gas of intensified blower fan and gas cooler pressurization cooling is introduced absorption column of gas by gas feed 4, first pass through the gas zone to be absorbed 10 of lower group of gas absorbing device, successively through installing hole, GAS ABSORPTION pipe 8 openend enters GAS ABSORPTION pipe 8 inner chamber, under pressure differential inside and outside GAS ABSORPTION pipe 8 promotes, sucking on GAS ABSORPTION pipe 8, it is divided into the micro-bubble of homogeneous diameter, the absorbing liquid in entrance GAS ABSORPTION district 9 carries out gas-liquid two-phase with absorbing liquid be fully contacted, realize one-level GAS ABSORPTION；Gas after first order absorption is upwardly into middle group of gas absorbing device, carries out the secondary gas as one-level gas absorption process and absorbs；Gas after two grades absorb continues upwardly into upper group of gas absorbing device, carries out three grades of GAS ABSORPTION as one-level gas absorption process；Gas from gas outlet 6 discharge absorption column of gas after absorption, completes the process of waste gas；When liquid level gauge 11 shows the absorbing liquid deficiency of certain group gas absorbing device, automatically GAS ABSORPTION district 9 is carried out fluid infusion from fluid infusion mouth 12；When the absorbing liquid of certain group gas absorbing device is close to time saturated, discharge absorbing liquid, and the absorbing liquid more renewed through its evacuation port 13.
Embodiment 1:
Gas to be absorbed: SO2Waste gas, 2000mg/m3。
Absorbing liquid: 10～30% NaOH solution.
Absorption column of gas: use stainless steel；Tower body is vertical, high 2100mm, tower body diameter 1000mm；Set three groups, upper, middle and lower gas absorbing device in tower body, be respectively provided with single liquid level gauge, fluid infusion mouth and evacuation port；GAS ABSORPTION pipe 25, high 500mm, sucking aperture 0.05 μm.
Implementation process: intensified, the SO of cooling2Waste gas constantly enters in absorption column of gas, respectively lower group, middle group and on organize gas absorbing device contacts with NaOH solution and carry out GAS ABSORPTION, the clean gas after three grades of GAS ABSORPTION enters air.
Result of implementation: the SO of gas vent exhaust2≤68mg/m3, meet environment protection emission requirement.
Embodiment two:
As it is shown on figure 3, the absorption column of gas of the present invention, being provided with three groups of gas absorbing devices 1, three groups of gas absorbing devices 1 share tower body 2, and tower body 2 vertical type cylinder shape is arranged；
Tower body 2 left and right sides is respectively equipped with left tower lid 15 and right tower lid 14, sets gas feed 4, set gas vent 6 on Zuo Tagai 15 on You Tagai 14；
Gas absorbing device 1 has orifice plate 7 and more than three GAS ABSORPTION pipes 8；Orifice plate 7 is the plectane with installing hole, is vertically arranged in tower body 2, and Type of Welding and tower body 2 inwall are fixing to be connected to seal；The single-ended opening of GAS ABSORPTION pipe 8, its openend is fixed on the installing hole of orifice plate 7 by sealing Type of Welding sealing, is evenly equipped with the sucking in below grade aperture on GAS ABSORPTION pipe 8, and sucking aperture is at 0.05 μm～1mm；
Gas absorbing device 1 is divided into left and right two parts by orifice plate 7, GAS ABSORPTION district 9 on the left of i.e. and the gas zone to be absorbed 10 on right side, GAS ABSORPTION pipe 8 is positioned at GAS ABSORPTION district 9 and the most not in the absorbing liquid in GAS ABSORPTION district 9, and GAS ABSORPTION pipe 8 inner chamber connects with gas zone 10 to be absorbed；
It is equipped with liquid level gauge (not shown), fluid infusion mouth 12 and evacuation port 13 in the GAS ABSORPTION district 9 of three groups of gas absorbing devices 1, liquid level gauge is used for controlling absorbing liquid height, fluid infusion mouth 12 is located at above GAS ABSORPTION district 9, and evacuation port 13 is located at bottom GAS ABSORPTION district 9；Being provided with liquid barrier 16 between two adjacent groups gas absorbing device 1, have gas passage 17 between liquid barrier 16 and tower body 2, liquid barrier 16 is higher than GAS ABSORPTION district 9 high level；
Three groups of gas absorbing devices about 1 are arranged, constitute a left side, in, right three groups of gas absorbing devices being sequentially connected in series, gas feed 4 connects with the gas zone to be absorbed 10 of right group of gas absorbing device 1, gas vent 6 connects with the GAS ABSORPTION district 9 of left set of gas absorbing device 1, when left and right two adjacent groups gas absorbing device connects, the GAS ABSORPTION district 9 of right group of gas absorbing device 1 is connected by gas passage about 17 with the gas zone to be absorbed 10 of middle group of gas absorbing device 1, the GAS ABSORPTION district 9 of middle group of gas absorbing device 1 is connected by gas passage about 17 with the gas zone to be absorbed 10 of upper group of gas absorbing device 1.
Using the absorption column of gas shown in Fig. 3 to absorb the alkaline gas produced in certain oil plant production process, its technological process is as follows:
Alkalescence gas absorption process is carried out in three groups of gas absorbing devices 1 of absorption column of gas, the absorbing liquid making each group of gas absorbing device 1 GAS ABSORPTION district 9 is totally submerged GAS ABSORPTION pipe 8, alkalescence gas is introduced absorption column of gas by gas feed 4, first pass through the gas zone to be absorbed 10 of right group of gas absorbing device, successively through installing hole, GAS ABSORPTION pipe 8 openend enters GAS ABSORPTION pipe 8 inner chamber, under pressure differential inside and outside GAS ABSORPTION pipe 8 promotes, sucking on GAS ABSORPTION pipe 8, it is divided into the micro-bubble of homogeneous diameter, the absorbing liquid in entrance GAS ABSORPTION district 9 carries out gas-liquid two-phase with absorbing liquid be fully contacted, realize one-level GAS ABSORPTION；Gas after first order absorption organizes gas absorbing device in entering to the left, carries out the secondary gas as one-level gas absorption process and absorbs；Gas after two grades absorb continues to enter to the left left set of gas absorbing device, carries out three grades of GAS ABSORPTION as one-level gas absorption process；Gas from gas outlet 6 discharge absorption column of gas after absorption, completes the process of waste gas；When liquid level gauge 11 shows the absorbing liquid deficiency of certain group gas absorbing device, automatically GAS ABSORPTION district 9 is carried out fluid infusion from fluid infusion mouth 12；When the absorbing liquid of certain group gas absorbing device is close to time saturated, discharge absorbing liquid, and the absorbing liquid more renewed through its evacuation port 13.
Embodiment
2
:
Gas to be absorbed: ammonia, 1000mg/m3。
Absorbing liquid: dilute H2SO4Solution.
Absorption column of gas: use polypropylene material；Tower body is horizontal, long 2000mm, high 1100mm；Set in tower body the right side, in, left three groups of gas absorbing devices, be respectively provided with single liquid level gauge, fluid infusion mouth and evacuation port, liquid barrier height 950mm；GAS ABSORPTION pipe 17, long 500mm, sucking aperture 1mm.
Implementation process: intensified ammonia constantly enters in absorption column of gas, respectively in right group, middle group and left set of gas absorbing device with dilute H2SO4Solution contact carries out GAS ABSORPTION, and the clean gas after three grades of GAS ABSORPTION discharges absorption column of gas.
Result of implementation: the ammonia≤40mg/m of gas vent exhaust3, ammonia absorptivity is more than 96%.
Embodiment three:
As illustrated in figures 4-5, the absorption column of gas of the present invention, there are gas feed 4, gas vent 6 and six groups of gas absorbing devices 1, often group gas absorbing device 1 is respectively provided with single unit tower tower body 23 and constitutes a unit tower 18, wherein 3 unit tower 18 are connected in parallel with each other Component units tower group I, other 3 unit tower 18 Component units parallel with one another tower groups II, unit tower group I is connected in series with each other with unit tower group II；
The concrete structure of unit tower 18 is as it is shown in figure 5, be provided with single unit tower tower body 23, and unit tower tower body 23 vertical type cylinder shape is arranged；Gas absorbing device 1 has horizontal orifice plate 7 and more than three GAS ABSORPTION pipes 8,
Orifice plate 7 is the plectane of band installing hole, is connected so that Flange joint form and unit tower tower body 23 inwall are fixing；The single-ended opening of GAS ABSORPTION pipe 8, its openend is threaded connection form and is fixed on the installing hole of orifice plate 7；GAS ABSORPTION pipe 8 is evenly equipped with the sucking in below grade aperture, gas absorbing device 1 is divided into upper and lower two parts at 0.05 μm～1mm: orifice plate 7 by sucking aperture, the i.e. GAS ABSORPTION district 9 on top and the gas zone to be absorbed 10 of bottom, GAS ABSORPTION pipe 8 is positioned at GAS ABSORPTION district 9 and the most not in the absorbing liquid in GAS ABSORPTION district 9, and GAS ABSORPTION pipe 8 inner chamber connects with gas zone 10 to be absorbed；Being provided with liquid level gauge 11, fluid infusion mouth 12 and evacuation port 13 in GAS ABSORPTION district 9, liquid level gauge 11 is in order to control absorbing liquid height, and fluid infusion mouth 12 is located at the top in GAS ABSORPTION district 9, and evacuation port 13 is located at bottom GAS ABSORPTION district 9；
Unit tower tower body 23 both sides are respectively provided with lower tower lid 24 and upper tower lid 26, lower tower lid 24 has unit tower gas feed 25, upper tower lid 26 has unit tower gas vent 27；
3 unit tower 18 common gas intake headers I 19 of unit tower group I and gas outlet header I 20,3 unit tower 18 common gas intake headers II 21 of unit tower group II and gas outlet header II 22, the gas outlet header I 20 of unit tower group I interconnects with the gas feed house steward II 21 of unit tower group II；Gas feed 4 is sequentially communicated the unit tower gas feed 25 of 3 unit tower 18 of gas feed house steward I 19, unit tower group I, gas zone to be absorbed 10；Gas vent 6 is sequentially communicated the unit tower gas vent 27 of 3 unit tower 18 of gas outlet header 22, unit tower group II, GAS ABSORPTION district 9；
In theory, absorption column of gas can arrange multiple unit tower or unit tower group, use plural serial stage, plural parallel stage or hybrid connected structure, to meet the requirement that gas fully absorbs, but in the specific implementation, along with unit tower or the increase of unit tower group quantity, absorption column of gas entirety vapour lock strengthens, it is unfavorable for the absorption of gas on the contrary, during conventional enforcement, using 2～4 unit tower Component units tower groups in parallel, the unit tower groups of 2～3 series connection constitute absorption column of gas, the most beneficially GAS ABSORPTION but also disclosure satisfy that vapour lock requirement.
Using the absorption column of gas shown in Fig. 4-5 to absorb the acid mist produced in certain chemical plant production process, its technological process is as follows:
nullAcid mist absorption process is carried out in the gas absorbing device 1 of absorption column of gas each unit tower 18，The absorbing liquid making each unit tower gas absorbing device 1 GAS ABSORPTION district 9 is totally submerged GAS ABSORPTION pipe 8，Acid mist is introduced absorption column of gas by gas feed 4，Through gas feed house steward I 19、Unit tower gas feed 25 respectively enters in 3 unit tower 18 of unit tower group I，First pass through the gas zone to be absorbed 10 of 3 unit tower 18 gas absorbing devices，Successively through installing hole、GAS ABSORPTION pipe 8 openend enters GAS ABSORPTION pipe 8 inner chamber，Under pressure differential inside and outside GAS ABSORPTION pipe 8 promotes，Sucking on GAS ABSORPTION pipe 8，It is divided into the micro-bubble of homogeneous diameter，The absorbing liquid in entrance GAS ABSORPTION district 9 carries out gas-liquid two-phase with absorbing liquid be fully contacted，The acid mist completing unit tower group I absorbs，Gas after absorption collects to gas outlet header I 20，Through gas feed house steward II 21、Unit tower gas feed 25 respectively enters in 3 unit tower 18 of unit tower group II，Carry out the acid mist in unit tower group II to absorb，Gas after unit tower group II absorbs collects to its gas outlet header II 22 through unit tower gas vent 27，Absorption column of gas is discharged by gas vent 6，Complete acid mist absorption operation；When liquid level gauge 11 shows the absorbing liquid deficiency of certain unit tower 18, automatically GAS ABSORPTION district 9 is carried out fluid infusion from fluid infusion mouth 12；When the absorbing liquid of certain unit tower 18 is close to time saturated, discharge absorbing liquid, and the absorbing liquid more renewed through its evacuation port 13.
Embodiment
3
:
Gas to be absorbed: HCl acid mist.
Absorbing liquid: pH12～13NaOH solution.
Absorption column of gas: set two groups of series unit tower groups, each unit tower group sets three unit tower in parallel；Gas train is set in each unit tower；Unit tower sets liquid level gauge, fluid infusion mouth and evacuation port；The long 1100mm of unit tower tower body, diameter 350mm, unit tower sets GAS ABSORPTION pipe 9, long 900mm, sucking aperture 45 μm.
Implementation process: intensified acid mist constantly enters in absorption column of gas, successively contacts with dilute NaOH solution in the unit tower in two groups of unit tower groups and carries out GAS ABSORPTION, and the clean gas after GAS ABSORPTION discharges absorption column of gas.
Result of implementation: the HCl≤5mg/m of gas vent exhaust3, acid mist is fully purified.
Claims (9)
1. an absorption column of gas, there is gas feed (4) and gas vent (6), described absorption column of gas has gas absorbing device more than two (1), and described gas absorbing device more than two (1) shares tower body (2) or is respectively provided with single unit tower tower body (23)；It is characterized in that:
Described gas absorbing device (1) has single-ended open type GAS ABSORPTION pipe (8) of orifice plate (7) and more than three；Described orifice plate (7) is fixing with described tower body (2) inwall or described unit tower tower body (23) inwall to be connected, gas absorbing device (1) is divided into two parts by orifice plate (7), i.e. GAS ABSORPTION district (9) and gas zone to be absorbed (10), described GAS ABSORPTION district (9) is positioned at the side of gas absorbing device orifice plate (7), described GAS ABSORPTION pipe (8) is positioned at described GAS ABSORPTION district (9) and the most not in the absorbing liquid of GAS ABSORPTION district (9), and described gas zone to be absorbed (10) is positioned at the opposite side of gas absorbing device orifice plate (7)；
The openend of described GAS ABSORPTION pipe (8) is fixed on the installing hole of orifice plate (7), and GAS ABSORPTION pipe (8) inner chamber connects with described gas zone to be absorbed (10)；
Being evenly equipped with sucking on GAS ABSORPTION pipe (8), described sucking is that aperture is in 0.05 μm～the hole of 1mm；
Described gas feed (4) connects with the gas zone to be absorbed (10) of least one set gas absorbing device (1), and described gas vent (6) connects with the GAS ABSORPTION district (9) of least one set gas absorbing device (1).
Absorption column of gas the most according to claim 1, it is characterized in that: the gas absorbing device (1) of respectively organizing of described absorption column of gas is connected up and down and shares tower body (2), described gas feed (4) is located on the Xia Tagai (3) of tower body (2) downside, gas vent (6) is located on the Shang Tagai (5) of tower body (2) upside, described orifice plate (7) horizontally set, gas absorbing device (1) is divided into two parts by orifice plate (7), i.e. GAS ABSORPTION district (9) on the upside of orifice plate (7) and the gas zone to be absorbed (10) of orifice plate (7) downside；Described gas feed (4) connects with the gas zone to be absorbed (10) of lower side gas train (1), and described gas vent (6) connects with the GAS ABSORPTION district (9) of top side gas train (1).
Absorption column of gas the most according to claim 1, it is characterized in that: connect and shared tower body (2) in gas absorbing device (1) left and right of respectively organizing of described absorption column of gas, described gas feed (4) is located on the You Tagai (14) on tower body (2) right side, gas vent (6) is located on the Zuo Tagai (15) in tower body (2) left side, described orifice plate (7) is vertically arranged, gas absorbing device (1) is divided into two parts by orifice plate (7), i.e. GAS ABSORPTION district (9) on the left of orifice plate (7) and the gas zone to be absorbed (10) on orifice plate (7) right side；Being additionally provided with liquid barrier (16) between two adjacent groups gas absorbing device (1), have gas passage (17) between described liquid barrier (16) and tower body (2) inwall, liquid barrier (16) is higher than GAS ABSORPTION district (9) high level；Described gas feed (4) connects with the gas zone to be absorbed (10) of rightmost side gas train (1), and described gas vent (6) is connected by gas passage (17) with the GAS ABSORPTION district (9) of leftmost side gas train (1).
Absorption column of gas the most according to claim 1, it is characterized in that: often group gas absorbing device (1) of described absorption column of gas is respectively provided with single unit tower tower body (23) and constitutes a unit tower (18), and described unit tower (18) serial or parallel connection or serial-parallel mirror connect and compose described absorption column of gas；Orifice plate (7) is horizontally set in unit tower (18), and gas absorbing device (1) is divided into two parts by orifice plate (7), i.e. GAS ABSORPTION district (9) on the upside of orifice plate (7) and the gas zone to be absorbed (10) of orifice plate (7) downside；Unit tower tower body (23) is respectively provided with Shang Tagai (26) and lower tower lid (24) in both sides up and down, Xia Tagai (24) has unit tower gas feed (25), Shang Tagai (26) has unit tower gas vent (27)；Described gas feed (4) is connected by its unit tower gas feed (25) with the gas zone to be absorbed (10) of at least one unit tower (18) interior gas absorbing device (1), and described gas vent (6) is connected by its unit tower gas vent (27) with the GAS ABSORPTION district (9) of at least one unit tower (18) interior gas absorbing device (1).
Absorption column of gas the most according to claim 4, it is characterized in that: plural unit tower (18) is connected in parallel Component units tower group, plural unit tower group is connected in series the absorption column of gas described in composition, unit tower common gas intake header and gas outlet header in described unit tower group, between adjacent cells tower group, the gas outlet header of previous unit tower group interconnects with the gas inlet manifold of a rear unit tower group；Described gas feed (4) connects with the gas feed house steward of at least one unit tower group, and described gas vent (6) connects with the gas outlet header of at least one unit tower group.
Absorption column of gas the most according to claim 5, it is characterised in that: 2～4 unit tower in parallel (18) Component units tower groups, the absorption column of gas described in unit tower group composition of 2～3 series connection.
7. according to the absorption column of gas described in claim 1～6 any claim, it is characterized in that: described gas absorbing device (1) is provided with fluid infusion mouth (12) and/or evacuation port (13), described fluid infusion mouth (12) is arranged on top, GAS ABSORPTION district (9), and described evacuation port (13) is located at described GAS ABSORPTION district (9) bottom.
8. according to the absorption column of gas described in claim 1～6 any claim, it is characterised in that: the material of described absorption column of gas is stainless steel, polyethylene, polyamide, polypropylene or polytetrafluoroethylene (PTFE).
null9. the using method of absorption column of gas described in claim 1，It is characterized in that: gas absorption process is carried out in the gas absorbing device (1) of absorption column of gas，The absorbing liquid making GAS ABSORPTION district (9) is totally submerged GAS ABSORPTION pipe (8)，Gas from gas import (4) to be absorbed introduces absorption column of gas，First pass through the gas zone to be absorbed (10) of gas absorbing device (1)，Successively through installing hole、GAS ABSORPTION pipe (8) openend enters GAS ABSORPTION pipe (8) inner chamber，Under pressure differential inside and outside GAS ABSORPTION pipe (8) promotes，Sucking on GAS ABSORPTION pipe (8)，It is divided into the micro-bubble of homogeneous diameter，The absorbing liquid of entrance GAS ABSORPTION district (9) carries out gas-liquid two-phase with absorbing liquid be fully contacted，Realize GAS ABSORPTION，Gas from gas outlet (6) after gas absorbing device more than two (1) absorbs discharges absorption column of gas.
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| CN106310885A (en) * | 2016-10-17 | 2017-01-11 | 南京永亮炉业有限公司 | Selenium absorption tower |
| CN107899373A (en) * | 2017-12-13 | 2018-04-13 | 湖南云平环保科技有限公司 | Low liquid-gas ratio high efficiency spray absorption tower |
| CN110180370A (en) * | 2019-05-10 | 2019-08-30 | 华电电力科学研究院有限公司 | A kind of System and method for being bubbled the integrative coordinated removing multiple pollutant of spray |
| CN110152458A (en) * | 2019-05-27 | 2019-08-23 | 邯郸开发区华骐环保科技有限公司 | A kind of full-automatic purifying formaldehyde machine |
| CN111265952A (en) * | 2020-04-08 | 2020-06-12 | 贵州省息烽县长宏铸造有限公司 | Bubbling scrubber for tail gas of cupola furnace |
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