Exhaust gas treatment system
Technical Field
The utility model relates to an exhaust-gas treatment field especially relates to an exhaust-gas treatment system.
Background
With the development of economy and society, the problem of environmental pollution is more and more serious, especially in the field of waste gas treatment. The current waste gas treatment system is mainly formed by high-altitude discharge or simple filtration and the like, and has the following problems: the application scope is narrow, and every kind of exhaust-gas treatment system only is suitable for single waste gas, and different waste gases need set up the equipment of different structures, and the absorbent is single, and an exhaust-gas equipment only can use single absorbent to cause absorption effect poor, discharge and ask for tender, polluted environment scheduling problem.
Disclosure of Invention
Based on the problem that prior art exists, the utility model aims at providing a waste gas treatment system can handle multiple waste gas, reaches the treatment effect who satisfies the requirement.
The utility model aims at realizing through the following technical scheme:
an embodiment of the utility model provides an exhaust-gas treatment system, include:
the system comprises a noncondensable gas absorption tower, a gas-liquid separator and a combined pickling tower;
noncondensable gas absorption tower is equipped with waste gas entry and just net gas export, just net gas export warp vapour and liquid separator with the combination formula pickling tower is connected, the combination formula pickling tower is equipped with the export of purified gas.
By the foregoing the utility model provides a technical scheme can see out, the embodiment of the utility model provides an exhaust-gas treatment system, its beneficial effect is:
(1) the absorbent has wide application range: various absorbents may be employed in the exhaust treatment system apparatus, including: limestone, lime, magnesium stone, spent soda solution, etc.;
(2) the application range is wide: the method is suitable for treating the tail gas of boilers burning coal, heavy oil, Orimusion oil, petroleum coke and other fuels;
(3) the spray pipes arranged up and down can be arranged in a cross way to form a cross spray system, the cross arrangement of the spray pipes is beneficial to reducing the height of the absorption tower, the harmful components in the waste gas are fully absorbed, and the pollution to the environment is reduced.
(4) The combined type pickling tower achieves the purpose of treating various waste gases by combining various different fillers and washing liquids, has obvious treatment effect, large treatment capacity and low cost, and can be widely applied.
(5) Can achieve the purpose of treating various waste gases through flexible combination, and has simple and easy operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of an exhaust treatment system according to an embodiment of the present invention;
in the figure: 1-a first ball valve; 2-a circulating pump; 3-a sampling port; 4-a stop valve; 5-a second ball valve; 6-a medicine adding tank; 7-a spray washing device; 8-a gas-liquid separator; 9-an air pump; 10-a third ball valve; 11-a first packing device; 12-a cylinder body; 13-a base plate; 14-elliptical sealing head; 15-a second spray rinsing device; 16-a second packing device; 17-a third spray rinsing device; 18-a third packing device; 19-an elliptical head reaction cylinder; 20-bottom elliptical head; 21-a support; 22-foundation bolt seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the specific contents of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides an exhaust gas treatment system, including:
the system comprises a noncondensable gas absorption tower, a gas-liquid separator and a combined pickling tower;
noncondensable gas absorption tower is equipped with waste gas entry and just net gas export, just net gas export warp vapour and liquid separator with the combination formula pickling tower is connected, the combination formula pickling tower is equipped with the export of purified gas.
In the above exhaust gas treatment system, the noncondensable gas absorption tower includes:
the device comprises a sealed reaction cylinder, a first packing device, a first spray washing device, a circulating pipeline assembly, a waste gas input assembly and a dosing assembly;
the first packing device is arranged in the middle of the sealed reaction cylinder, the first spray washing device is arranged above the first packing device, and the first spray washing device is connected with the bottom of the sealed reaction cylinder through the circulating pipeline assembly;
the waste gas input assembly is connected to the middle lower part of the sealed reaction cylinder, the connecting position is positioned below the first packing device, and the waste gas input assembly is provided with the waste gas inlet;
the dosing assembly is connected to the sealed reaction cylinder, and the connection position of the dosing assembly is positioned below the first filling device;
the top of the sealed reaction cylinder is provided with the initial purified gas outlet.
In the above-mentioned noncondensable gas absorption tower, the sealed reaction cylinder includes: the bottom of the cylindrical barrel is provided with a bottom plate, and the top of the cylindrical barrel is provided with an elliptical sealing head. The cylindrical barrel is of a variable cross-section structure, the diameter of the bottom of the cylindrical barrel is larger than that of the upper portion of the cylindrical barrel, so that the treated waste gas can be conveniently concentrated on the upper portion of the cylindrical barrel for treatment, and the first filling device can be conveniently arranged in the small-diameter barrel on the upper portion of the cylindrical barrel.
In the above non-condensable gas absorption tower, the waste gas input assembly is composed of an air suction pump and a third ball valve which are sequentially arranged on an air inlet pipeline, wherein an air inlet end of the air suction pump is used as a waste gas inlet;
the circulating pipeline assembly is composed of a first ball valve, a circulating pump, a stop valve and a second ball valve which are sequentially arranged on the circulating pipe, the first ball valve is connected with the bottom in the sealed reaction cylinder, and the second ball valve is connected with the spray-washing device.
In the above waste gas treatment system, the dosing assembly comprises a dosing box and a dosing tank which are connected in sequence, and the dosing tank is connected with the sealed reaction cylinder.
In the above-mentioned noncondensable gas absorption tower, the first packing device adopts the active carbon packing device.
In the above exhaust gas treatment system, the gas-liquid separator includes: sealing the tank body and the sewage tank; wherein,
the middle of the bottom of the closed tank body is provided with a convex part, the convex part is provided with an air inlet, the periphery part lower than the convex part is provided with a sewage outlet, and the sewage outlet is connected with the sewage pool through a pipeline;
and the middle upper part of the closed tank body is provided with an air outlet, and the air outlet is connected with the combined pickling tower.
In the above exhaust gas treatment system, the combined pickling tower comprises:
the device comprises an elliptical end socket reaction cylinder, a support, a plurality of packing devices and a plurality of spray washing devices; wherein,
the elliptical head reaction barrel is arranged on the support, and the bottom of the elliptical head reaction barrel is provided with an air inlet connected with an air outlet of the gas-liquid separator;
a plurality of packing devices are arranged above the air inlet in the elliptical head reaction cylinder at intervals, and a spray washing device is arranged above each packing device;
and a purified gas outlet is arranged at the top of the elliptical seal head reaction cylinder.
In the combined pickling tower, at least two filling devices in the plurality of filling devices adopt different filling absorbents;
the combined pickling tower is a filler combined pickling tower, and preferably can be provided with two layers of filler devices and two spray washing devices.
The elliptical head reaction cylinder of the combined type pickling tower is of a closed cylinder structure with elliptical heads at two ends, so that the flow of the processing gas in the cylinder structure without dead angles is facilitated.
Furthermore, the combined pickling tower can also adopt a plate-type combined pickling tower.
The utility model discloses a processing system compares with prior art and has following advantage at least:
(1) the absorbent has wide application range: various absorbents can be used, including: limestone, lime, magnesium stone, spent soda solution, etc.;
(2) the application range is wide: the method is suitable for treating the tail gas of boilers burning coal, heavy oil, Orimusion oil, petroleum coke and other fuels;
(3) the cross spray pipe arrangement technology comprises the following steps: is favorable for reducing the height of the absorption tower.
(4) The purpose of treating various waste gases can be achieved through the combination of various different fillers and washing liquids, the treatment effect is obvious, the treatment capacity is large, the cost is low, and the method can be widely applied.
(5) Can achieve the purpose of treating various waste gases through flexible combination, and has simple and easy operation.
The utility model provides a waste gas treatment system is arranged in certain project landfill leachate treatment engineering of this company, in this project, need carry out cooling treatment from the landfill leachate waste gas of the high temperature high concentration that the evaporimeter goes out of concentration to discharge after handling and reaching national emission standard. In the existing waste gas treatment device, the problems that the treated waste gas is incomplete, the treatment efficiency is low, the non-condensable gas in the waste gas is difficult to treat completely and the like exist, the untreated clean waste gas can cause serious pollution to the surrounding environment once being discharged, and toxic gas causes harm such as human poisoning and the like. The invention is characterized in that the invention flexibly achieves the purpose of treating various waste gases by adopting two or more times of treatment, selecting different washing liquid and filling materials according to the different components in the waste gases and combining various different media, and the treated waste gases have the advantages of cleanness, no pollution, large treatment capacity, low cost, mature design and the like.
A novel waste gas treatment system is widely applied to various waste gas treatment processes. The utility model provides a waste gas treatment system has that equipment area is little, and the handling capacity is big, easy operation, the control of being convenient for, with low costs, advantages such as small investment can the waste gas of the various rubbish power plants of large batch processing, also can extensive application to the waste gas that fields such as chemical fertilizer industry, sewage treatment, pharmaceutical chemical industry produced, therefore application prospect is very good.
The embodiments of the present invention will be described in further detail below.
As shown in FIG. 1, an embodiment of the present invention provides an exhaust treatment system. The novel waste gas treatment system can be used in the landfill leachate treatment engineering, and is used for treating waste gas generated in the evaporation concentration process when the high-temperature high-turbidity landfill leachate concentrated in an evaporator is subjected to evaporation concentration treatment so as to reach the national discharge standard and then is discharged. The waste gas treatment system realizes the purposes of purifying gas and removing various complex components in waste gas by adopting the structure of a specific non-condensing absorption tower and the structure of a filler pickling tower and the combined action of a plurality of spraying devices, and then removes dust in the gas through flushing, and then discharges the gas.
The utility model discloses an exhaust-gas treatment system mainly includes two big portions: the device comprises an absorption tower without a condenser, a gas-liquid separator, a combined pickling tower, and accessories such as various matched pipelines, valves, pumps, a spray washing device, a gas-liquid separator and the like.
The non-condensable gas absorption tower mainly comprises a cylindrical barrel 12, a bottom plate 13, an elliptical seal head, a first filling device, a first spray washing device, a dosing tank, a circulating pipeline assembly, functional pipe orifices, a pump and other accessories; wherein, the container formed by the cylindrical barrel 12 and the bottom plate 13 is sealed by an elliptical seal head; the structure can bear various working conditions, and the material of the equipment cylinder body can be selected according to different waste gas components, such as Q235B or stainless steel.
The first filling device and the first spraying device are arranged in the cylinder body, so that the aim of separating waste gas from the atmosphere is fulfilled. The gas is pumped into the absorption tower of the noncondensable gas by a suction pump, and the waste gas is provided with a manual ball valve 10 on a pipeline leading to the absorption tower of the noncondensable gas, and the valve is used for controlling the inlet and the outlet of the waste gas. Waste gas gets into not congealing behind the absorption tower, now through one deck filler device, this filler can be active carbon etc. and detach the miscellaneous dirt of big granule in the waste gas, reach the purpose of first purification, just can carry out a washing by washing unit afterwards, absorb the gas of being soluble in water easily in with waste gas, for example ammonia etc. waste gas is through preliminary filtration and washing back, has reached preliminary purification, just can carry gas-liquid separator through the pipeline on next step and carry out gas-liquid separation.
Other various fillers can be stacked on the first filler device, impurities such as various dust and particles in the waste gas can be effectively removed through the fillers, the waste gas is cleaned for the first time, the first-time cleaning is an important step, and the fillers are prepared for the next waste gas treatment. After the waste gas is treated by the filler and cleaned by the solution, the components of the waste gas are greatly purified, the purified waste gas enters a gas-liquid separator in the next step to realize gas-liquid separation, and clean and cleaner waste gas is obtained in the gas-liquid separator to prepare for entering a combined pickling tower for continuous purification in the next step.
The conical section of the cylindrical barrel body 12 is provided with a medicine adding tank which is a storage tank for adding various medicines into the non-condensable gas absorption tower, and various medicines can be added into the non-condensable gas absorption tower through the medicine adding tank, so that various components in waste gas are absorbed through the medicine solutions, and the purpose of purification is achieved. The medicine adding tank is mainly composed of a small tank body, a conical section, a valve and the like, various medicines can be placed, solid medicines are placed into the non-condensable gas absorption tower through the small tank body, the circulating purpose is achieved through the action of a circulating pump, the purpose of configuring various washing liquids is achieved, the washing liquids are conveyed to the upper portion of the non-condensable gas absorption tower through a circulating pump through a pipeline, waste gas is washed through a spraying device, and therefore the purpose of purifying waste gas is achieved. Preferably, the material of adding the medicinal cupping can be various materials, respectively add a ball valve to reach sealed effect from top to bottom, easy operation, the expense is low, durable, equipment long service life.
Through the circulation pipeline subassembly, set up a circulating pump in noncondensable gas absorption tower outside, carry the top through the solution of circulating pump in with the tower, thereby spray out solution through the nozzle and make liquid and waste gas reach abundant contact, improved absorptive efficiency, increased the effect of purification, the effectual composition of having located in the waste gas of going, the treatment effect is showing, easy operation. Further set up the sample connection after the circulating pump of circulating line subassembly, the convenient sample detects solution composition, confirms the main pollutant of waste gas.
The gas-liquid separator 8 is mainly a closed tank body composed of an elliptical seal head, a pipeline and a cylindrical barrel, gas treated by the non-condensable gas absorption tower enters the gas-liquid separator from the bottom and is conveyed to the top of the gas-liquid separator through the pipeline, the gas is positioned at the upper part of the gas-liquid separator due to the fact that the proportion of water and the proportion of the gas in the gas are different, liquid can be gathered at the bottom of the gas-liquid separator due to the self-weight effect, and the liquid is discharged into a sewage pool through a sewage discharge pipeline arranged at the bottom of the gas-liquid separator to be reprocess. The gas is conveyed to the combined type pickling tower through the upper pipeline of the gas-liquid separator for further purification treatment, so that the effect of gas-liquid separation is achieved.
The combined pickling tower mainly comprises an elliptical head reaction cylinder 19, an elliptical head 14, a skirt base 21, a filler 18, a bottom elliptical head 20, a support base 21, a ground bolt base 22, two filler devices (a second filler device 16 and a third filler device 18), two spray washing devices (a second spray washing device 15 and a third spray washing device 17) and related pipelines;
the design parameters such as the material and the thickness of the elliptical head reaction cylinder 19 can be selected according to the characteristics of waste gas, and different materials and thicknesses can be selected according to different working conditions.
A plurality of spraying devices and a plurality of packing devices are arranged in the elliptical head reaction cylinder 19 and are used for purifying and cleaning waste gas. The inner packing layer can be iron sulfide, calcium oxide, limestone or lime cream and the like, and the medium of the packing layer can be selected according to different components of the removed waste gas. Waste gas enters from the bottom of the combined pickling tower after passing through the gas-liquid separator, and impurities and reducing components in the waste gas can be effectively removed through absorption of the filler and washing of the washing device in the tower for a plurality of times, and then the waste gas is discharged. The method has the advantages of no discharge of sewage and waste acid, light equipment corrosion degree, no obvious temperature reduction of waste gas in the purification process, high temperature of the purified waste gas, contribution to exhaust diffusion of a chimney, less secondary pollution and the like.
When the combined type pickling tower is used for treatment, gas obtained through treatment of the gas-liquid separator 8 is conveyed to the bottom of the combined type pickling tower through a gas pipeline, waste gas passes through the first layer of the packing device of the combined type pickling tower, gas which reacts with or is adsorbed by the packing in the waste gas is removed, secondary purification of the waste gas is achieved, and the waste gas is cleaner under the flushing effect of the upper third flushing device 17. The number of layers of packing and washing unit in the combined type pickling tower can be set to different numbers according to the difference of the components in the waste gas, and the type of packing can also be determined according to the components of the waste gas, so that the purpose of teaching according to the material can be achieved. In addition, biological bacteria can be placed on the filler layer, so that the harmful gas components in the waste gas can be removed by a biological method. The method can effectively remove impurities and harmful components in the waste gas, such as harmful dust, hydrogen sulfide, sulfur dioxide and the like. The waste gas is fully purified under the action of reaction and flushing for a plurality of times, and then is discharged through a discharge pipeline at the top.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.