CN111905526A - Quartz sand processing waste gas recovery treatment process - Google Patents
Quartz sand processing waste gas recovery treatment process Download PDFInfo
- Publication number
- CN111905526A CN111905526A CN202010641875.5A CN202010641875A CN111905526A CN 111905526 A CN111905526 A CN 111905526A CN 202010641875 A CN202010641875 A CN 202010641875A CN 111905526 A CN111905526 A CN 111905526A
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- waste gas
- quartz sand
- sand processing
- treatment process
- falling film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1412—Controlling the absorption process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
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- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a quartz sand processing waste gas recovery treatment process, and belongs to the technical field of pressure sensing intelligent fabric preparation. The invention relates to a quartz sand processing waste gas recovery treatment process, which mainly comprises the following steps of; respectively connecting two induced draft fans with a fluidized bed waste gas outlet and a circulating tank waste gas outlet in quartz sand processing equipment, respectively connecting the other ends of the two induced draft fans with two falling film absorption towers, respectively performing falling film absorption treatment on the fluidized bed waste gas and the circulating tank waste gas, and liquefying part of the waste gas; and (4) carrying out two-stage spraying on the tail gas discharged from the two falling film absorption towers again, and further purifying the waste gas to obtain the tail gas which can reach the emission standard. The quartz sand processing waste gas recovery treatment process provided by the invention has the advantages of simple preparation process flow and low investment cost, can be used for effectively improving the waste gas treatment quality and efficiency by carrying out technical transformation on the falling film absorption tower, improves the economic benefit, and is beneficial to wide popularization and use.
Description
Technical Field
The invention belongs to the technical field of new material processing waste gas recovery and treatment, and particularly relates to a quartz sand processing waste gas recovery and treatment process.
Background
The waste gas discharged from industrial production often has harmful influence on environment and human health, and before being discharged into the atmosphere, the waste gas is treated by adopting a purification measure so as to meet the requirements of waste gas discharge standards, and the process is called waste gas purification and recovery treatment.
The falling film absorption tower is one of the most important devices in the treatment of the waste gas of a factory, and is mainly used for absorbing the acid gas in the waste gas and forming an acid aqueous solution, so that the pollution of the waste gas is reduced, the acid gas in the waste gas is recycled, and the energy is saved and the environment is protected; the bottom of the existing falling film absorption tower is generally provided with a liquid storage tank for storing an acidic solution, the liquid storage tank is connected with a material pumping pump, the solution in the liquid storage tank can be pumped out through the material pumping pump, the solution in the liquid storage tank is prevented from being accumulated too much, the traditional falling film absorption tower needs to control the extraction of the solution through manually controlling the on-off of a liquid pumping pump circuit, and the traditional falling film absorption tower is troublesome; in the existing new material processing waste gas recovery treatment process, most of waste gas is not thoroughly treated, and the effect is not ideal enough.
Disclosure of Invention
The invention aims to provide a quartz sand processing waste gas recovery treatment process, which is realized by the following technical scheme for solving the technical problems:
the quartz sand processing waste gas recovery treatment process is characterized by comprising the following specific steps of:
s1, respectively communicating two induced draft fans with a fluidized bed waste gas outlet and a circulating tank waste gas outlet in quartz sand processing equipment;
s2: respectively connecting the other ends of the two induced draft fans with the two falling film absorption towers, respectively carrying out falling film absorption treatment on the fluidized bed waste gas and the circulating tank waste gas, and liquefying part of the waste gas;
s3: and (4) carrying out two-stage spraying on the tail gas discharged from the two falling film absorption towers again, and further purifying the waste gas to obtain the tail gas which can reach the emission standard.
Preferably, the spraying liquid used in the spraying process in the step (3) is water or weakly alkaline water, and the remaining tail gas spraying process can be two-stage spraying or multi-stage spraying.
Preferably, falling liquid film absorption tower includes falling liquid film absorption tower body, the outer wall that the bottom of falling liquid film absorption tower body was equipped with liquid reserve tank and liquid reserve tank is fixed with the mounting panel, be fixed with the input and the pipe connection of drawing liquid pump and drawing liquid pump on the mounting panel, the inner chamber of liquid reserve tank is equipped with the guide plate, the lower extreme of guide pipe runs through the lateral wall and the guide plate of liquid reserve tank and extends to the below and the liquid outlet fixed connection of guide plate, the interior air cavity of seting up accommodation hole and accommodation hole on the guide plate is sealed elastic diaphragm mechanism and backup pad from top to bottom, electrically conductive buffer gear is installed to the below of backup pad and cushion.
Preferably, the elastic diaphragm mechanism comprises an elastic diaphragm, the elastic diaphragm is fixed in the inner cavity of the accommodating hole in a sealing mode, an acid-base resistant coating is arranged at the upper end of the elastic diaphragm, and a conducting strip is fixed at the lower end of the elastic diaphragm, which is fixed with an insulating stop block and a circular insulating stop block.
Preferably, the conducting strip includes the conducting strip body, the bottom of conducting strip body is bilateral symmetry and is equipped with electrically conductive inserted block and two sets of electrically conductive inserted block inner chambers all are equipped with electrically conductive grafting chamber, electrically conductive grafting chamber includes frustum type grafting chamber and semi-circular grafting chamber, semi-circular grafting chamber is located frustum type grafting chamber.
Preferably, a circular through cavity is formed in the supporting plate, the lower end of the conducting strip is located in the inner cavity of the through cavity, the circular insulating stop block is located above the circular through cavity, and the diameter of the circular through cavity is smaller than that of the circular insulating stop block.
Preferably, electrically conductive buffer gear includes the telescopic link, the telescopic link is bilateral symmetry and is equipped with two sets of and the upper end of two sets of telescopic links all with insulation board fixed connection, the below of insulation board is bilateral symmetry and is equipped with two sets of springs and cup joints respectively on two sets of telescopic links, be bilateral symmetry on the insulation board and be equipped with first conducting rod and second conducting rod, the top of first conducting rod and second conducting rod is semi-circular setting.
Preferably, a controller is arranged on the outer wall of the liquid storage tank, the first conducting rod, the controller, the liquid pump and the second conducting rod are connected sequentially through a conducting wire, and the controller is electrically connected with an external power supply through the conducting wire.
The invention has the following beneficial effects:
according to the quartz sand processing waste gas recovery treatment process, the waste gas recovery treatment efficiency can be improved, and the tail gas emission quality can be improved, so that the tail gas emission standard can be met; through the improvement of the memorability technology of the falling film absorption tower, the falling film absorption tower is provided with an elastic diaphragm mechanism, a conductive rod and a liquid pump, when a certain amount of concentrated solution is contained in a liquid storage tank, the pressure of the solution can enable the elastic diaphragm to protrude downwards, so that two groups of conductive insertion blocks arranged at the lower end of a conductive sheet are respectively inserted into a first conductive rod and a second conductive rod, a current loop of the liquid pump is connected, the liquid pump automatically extracts the concentrated solution in the liquid storage tank, when the liquid level of the solution drops, the conductive insertion blocks are inserted into and separated from the conductive rods, the liquid pump stops working, and the on-off of a working circuit of the liquid pump is not required to be manually controlled; through being provided with backup pad and spring, can play good supporting role to elasticity diaphragm and insulating fender ring through the backup pad, prevent that elasticity diaphragm deformation volume is too big to lead to damaging, through the elastic force effect of spring, can be so that conductive rod and electrically conductive inserted block in close contact with, the good electrically conductive of being convenient for.
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 introduced below, and it is obvious that the drawings in the following description 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 the drawings without creative efforts.
FIG. 1 is a flow chart of a quartz sand processing waste gas recovery treatment process according to the present invention;
FIG. 2 is an overall structure diagram of a falling film absorption tower of a quartz sand processing waste gas recovery treatment process according to the present invention;
FIG. 3 is a front sectional view of a liquid storage tank of a falling film absorption tower in the quartz sand processing waste gas recovery treatment process according to the present invention;
FIG. 4 is an enlarged view of a structure at the position A of the falling film absorption tower in the quartz sand processing waste gas recovery treatment process according to the present invention;
FIG. 5 is a structural diagram of an elastic diaphragm mechanism and a supporting plate of a falling film absorption tower in the quartz sand processing waste gas recovery treatment process according to the present invention;
fig. 6 is a sectional view of a conductive insert block of a falling film absorption tower in a quartz sand processing waste gas recovery treatment process according to the present invention.
In the figure: 1. a falling film absorption tower body; 2. a liquid storage tank; 3. a liquid pump; 4. mounting a plate; 5. a conduit; 6. cushion blocks; 7. a conductive buffer mechanism; 71. a telescopic rod; 72. a spring; 73. an insulating plate; 74. a first conductive rod; 75. a second conductive rod; 8. a baffle; 9. an accommodation hole; 10. an elastic diaphragm mechanism; 101. an elastic diaphragm sheet; 102. an acid and alkali resistant coating; 103. an insulating stopper; 104. a conductive sheet; 1041. a conductive sheet body; 1042. a conductive plug; 1043. a conductive plug cavity; 11. a support plate; 12. a cavity is communicated; 13. and a controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The specific embodiment is as follows:
referring to fig. 1-6, the present invention is a quartz sand processing waste gas recycling process, which comprises the following steps:
s1, connecting two induced draft fans with a fluidized bed waste gas outlet and a circulating tank waste gas outlet in quartz sand processing equipment respectively, wherein each connector ensures tight connection and does not leak;
s2: respectively connecting the other ends of the two induced draft fans with the two falling film absorption towers, respectively carrying out falling film absorption treatment on the waste gas of the fluidized bed and the waste gas of the circulating tank, liquefying part of the waste gas, and respectively carrying out primary treatment on the waste gas generated by the fluidized bed and the waste gas in the circulating tank to remove part of acid in the waste gas;
s3: and (4) carrying out two-stage spraying on the tail gas discharged from the two falling film absorption towers again, and further purifying the waste gas to obtain the tail gas which can reach the emission standard.
The spraying liquid adopted in the spraying process in the step (3) is water or weakly alkaline water, so that the acid in the waste gas can be further neutralized, and the spraying process of the residual tail gas can be two-stage spraying or multi-stage spraying, so that the waste gas treatment quality is further improved.
Falling liquid film absorption tower includes falling liquid film absorption tower body 1, the outer wall that falling liquid film absorption tower body 1's bottom was equipped with liquid reserve tank 2 and liquid reserve tank 2 is fixed with mounting panel 4, the input that is fixed with drawing liquid pump 3 and drawing liquid pump 3 on mounting panel 4 is connected with pipe 5, the inner chamber of liquid reserve tank 2 is equipped with guide plate 8, pipe 5's lower extreme runs through the lateral wall of liquid reserve tank 2 and guide plate 8 and extends to guide plate 8's below and its liquid outlet fixed connection, the interior air cavity of seting up accommodation hole 9 and accommodation hole 9 on the guide plate 8 is that the upper and lower seal is fixed with elastic diaphragm mechanism 10 and backup pad 11, electrically conductive buffer mechanism 7 is installed to the below of backup pad 11 below being equipped with cushion 6 and.
The conducting strip 104 comprises a conducting strip body 1041, the conducting strip body 1041 is provided with conducting insertion blocks 1042 in a bilateral symmetry mode at the bottom, conducting insertion cavities 1043 are arranged in the inner cavities of the two groups of conducting insertion blocks 1042, each conducting insertion cavity 1043 comprises a frustum-shaped insertion cavity and a semicircular insertion cavity, the semicircular insertion cavities are located in the frustum-shaped insertion cavities, the frustum-shaped insertion cavities are arranged, and guiding insertion with conducting rods of the conducting buffer mechanisms 7 is facilitated.
Be equipped with circular logical chamber 12 on the backup pad 11, the lower extreme of conducting strip 104 is located the inner chamber that leads to chamber 12, and circular insulating dog 103 is located the top that circular logical chamber 12, and the diameter that circular logical chamber 12 is less than the diameter of circular insulating dog 103, and accessible backup pad 11 forms the support to elastic diaphragm piece 101, prevents that its water pressure that receives is too big, leads to its serious deformation damage.
The conductive buffer mechanism 7 comprises a telescopic rod 71, the telescopic rod 71 is bilaterally symmetrically provided with two groups of telescopic rods 71, the upper ends of the two groups of telescopic rods 71 are fixedly connected with an insulating plate 73, the lower part of the insulating plate 73 is bilaterally symmetrically provided with two groups of springs 72, the two groups of springs 72 are respectively sleeved on the two groups of telescopic rods 71, the insulating plate 73 is bilaterally symmetrically provided with a first conductive rod 74 and a second conductive rod 75, the top ends of the first conductive rod 74 and the second conductive rod 75 are arranged in a semicircular mode, the springs 72 are arranged, when the conductive rods are connected with the conductive inserts 1042 in an inserting mode, the conductive rods can be in close contact with the conductive inserts 1042 through the elastic force action of the springs 72, good conduction is facilitated, a current loop can be formed by connecting the two groups of conductive rods with.
The outer wall of the liquid storage box 2 is provided with a controller 13, the first conducting rod 74, the controller 13, the liquid pump 3 and the second conducting rod 75 are connected sequentially through conducting wires, and the controller 13 is electrically connected with an external power supply through conducting wires.
It should be noted that, the recovery processing technology of waste gas from quartz sand processing of the present invention needs to ensure good connection sealing performance between the waste gas outlets of the induced draft fan and the fluidized bed and the circulation tank and between the induced draft fan and the air inlet of the falling film absorption tower, so as to avoid leakage of waste gas, wherein when the falling film absorption tower is in use, the concentrated solution formed in the tower body enters the liquid storage tank 2, when a certain amount of concentrated solution is contained in the liquid storage tank 2, the pressure of the solution makes the elastic diaphragm sheet 101 protrude downwards, the downward movement of the conductive sheet 104 makes the two sets of conductive insert blocks 1042 arranged at the lower end of the conductive sheet 104 respectively insert with the first conductive rod 74 and the second conductive rod 75, at this time, the spring 72 is in a compressed state, the lower ends of the insulating stopper 103 and the elastic diaphragm sheet 101 are both in contact with the upper end of the support plate 11, and the current loop of the liquid pump 3 is connected so that the liquid pump 3 (the output end of the liquid, in sending into the large-scale recovery holding vessel of concentrated solution with the automatic pumping of concentrated solution in the liquid reserve tank 2, when the liquid level decline of the concentrated solution in the liquid reserve tank 2 reduced the pressure to elasticity diaphragm 101, elasticity diaphragm 101 drove conducting strip 104 upward movement through its self elasticity effect to make electrically conductive inserted block 1042 and conducting rod peg graft the separation, thereby make the disconnection of drawing liquid pump 3 circuit, drawing liquid pump 3 stop work.
It should be noted that, in the above system embodiment, each included unit is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
In addition, those skilled in the art will appreciate that all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing associated hardware, and the corresponding program may be stored in a computer-readable storage medium.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The quartz sand processing waste gas recovery treatment process is characterized by comprising the following specific steps of:
s1: respectively connecting two induced draft fans with a fluidized bed waste gas outlet and a circulating tank waste gas outlet in quartz sand processing equipment;
s2: respectively connecting the other ends of the two induced draft fans with the two falling film absorption towers, respectively carrying out falling film absorption treatment on the fluidized bed waste gas and the circulating tank waste gas, and liquefying part of the waste gas;
s3: and (4) carrying out two-stage spraying on the tail gas discharged from the two falling film absorption towers again, and further purifying the waste gas to obtain the tail gas which can reach the emission standard.
2. The quartz sand processing waste gas recovery treatment process according to claim 1, characterized in that: the spraying liquid adopted in the spraying process in the step (3) is water or weakly alkaline water, and the spraying process of the residual tail gas can be two-stage spraying or multi-stage spraying.
3. The quartz sand processing waste gas recovery processing technology as claimed in claim 1, wherein; the falling film absorption tower comprises a falling film absorption tower body (1), a liquid storage tank (2) is arranged at the bottom of the falling film absorption tower body (1), a mounting plate (4) is fixed on the outer wall of the liquid storage tank (2), a liquid pump (3) is fixed on the mounting plate (4), the input end of the liquid pump (3) is connected with the guide pipe (5), a guide plate (8) is arranged in the inner cavity of the liquid storage tank (2), the lower end of the guide pipe (5) penetrates through the side wall of the liquid storage tank (2) and the guide plate (8) and extends to the lower part of the guide plate (8) to be fixedly connected with the liquid outlet of the guide plate (8), the guide plate (8) is provided with a containing hole (9), an inner air cavity of the containing hole (9) is vertically sealed and fixed with an elastic diaphragm mechanism (10) and a supporting plate (11), the lower part of the supporting plate (11) is provided with a cushion block (6) and a conductive buffer mechanism (7) is arranged above the cushion block (6).
4. The quartz sand processing waste gas recovery treatment process according to claim 3, characterized in that: elastic diaphragm mechanism (10) are including elastic diaphragm piece (101), elastic diaphragm piece (101) seal fixation is in the inner chamber of accommodation hole (9), and the upper end of elastic diaphragm piece (101) is equipped with acid-proof alkali coating (102), the lower extreme of elastic diaphragm piece (101) is fixed with insulating dog (103) and the lower extreme of circular insulating dog (103) is fixed with conducting strip (104).
5. The quartz sand processing waste gas recovery treatment process according to claim 3, characterized in that: the conducting strip (104) comprises a conducting strip body (1041), conducting insert blocks (1042) are symmetrically arranged on the left and right of the bottom of the conducting strip body (1041) in a bilateral mode, conducting inserting cavities (1043) are arranged in the inner cavities of the two sets of conducting insert blocks (1042), each conducting inserting cavity (1043) comprises a frustum-shaped inserting cavity and a semicircular inserting cavity, and the semicircular inserting cavities are located in the frustum-shaped inserting cavities.
6. The quartz sand processing waste gas recovery treatment process according to claim 3, characterized in that: the round insulation check block is characterized in that a round through cavity (12) is formed in the supporting plate (11), the lower end of the conducting strip (104) is located in an inner cavity of the through cavity (12), the round insulation check block (103) is located above the round through cavity (12), and the diameter of the round through cavity (12) is smaller than that of the round insulation check block (103).
7. The quartz sand processing waste gas recovery treatment process according to claim 3, characterized in that: electrically conductive buffer gear (7) include telescopic link (71), telescopic link (71) are bilateral symmetry and are equipped with the upper end of two sets of and two sets of telescopic link (71) all with insulation board (73) fixed connection, the below of insulation board (73) is bilateral symmetry and is equipped with two sets of springs (72) and two sets of springs (72) cup joint respectively on two sets of telescopic link (71), it is equipped with first conducting rod (74) and second conducting rod (75) to be bilateral symmetry on insulation board (73), the top of first conducting rod (74) and second conducting rod (75) is semi-circular setting.
8. The quartz sand processing waste gas recovery treatment process according to claim 7, characterized in that: be equipped with controller (13) on the outer wall of liquid reserve tank (2), first conducting rod (74), controller (13), drawing liquid pump (3) and second conducting rod (75) loop through the wire and connect, controller (13) pass through wire and external power supply electric connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010641875.5A CN111905526A (en) | 2020-07-06 | 2020-07-06 | Quartz sand processing waste gas recovery treatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010641875.5A CN111905526A (en) | 2020-07-06 | 2020-07-06 | Quartz sand processing waste gas recovery treatment process |
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| CN203816486U (en) * | 2014-04-16 | 2014-09-10 | 泰山医学院 | Tail gas treatment device for producing nitrobenzenesulfonyl chloride |
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| CN204281305U (en) * | 2014-11-11 | 2015-04-22 | 柳超 | A kind for the treatment of unit of titanium tetrachloride production tail gas recycle hydrochloric acid |
| CN105396430A (en) * | 2015-12-03 | 2016-03-16 | 南京钟腾化工有限公司 | Falling film absorption device |
| CN105396429A (en) * | 2015-12-03 | 2016-03-16 | 南京钟腾化工有限公司 | Novel hydrochloric acid falling film absorption system |
| CN205988659U (en) * | 2016-08-29 | 2017-03-01 | 金川集团股份有限公司 | A kind of hydrochloric acid mist retracting device |
| CN208089345U (en) * | 2018-04-20 | 2018-11-13 | 中铁一局集团第四工程有限公司 | A kind of tunnel counter-slope drainage system |
| CN208512215U (en) * | 2018-06-29 | 2019-02-19 | 德兴市德邦化工有限公司 | A kind of energy saving film-falling absorption tower for exhaust-gas treatment |
| CN209100084U (en) * | 2018-10-14 | 2019-07-12 | 张言海 | Sump drainage arrangement in a kind of mining air way |
| CN110117983A (en) * | 2019-05-25 | 2019-08-13 | 江山市蓝科科技有限公司 | Drainage system is used in a kind of production of HDPE double-wall corrugated pipe |
| CN210343420U (en) * | 2019-06-26 | 2020-04-17 | 成岩岩 | Drainage device of mine well |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS53106675A (en) * | 1977-03-02 | 1978-09-16 | Otto & Co Gmbh Dr C | Method and apparatus for cleaning industrial waste gas |
| CN102389700A (en) * | 2011-10-11 | 2012-03-28 | 中国药科大学 | Low-emission waste gas treatment process |
| CN203816486U (en) * | 2014-04-16 | 2014-09-10 | 泰山医学院 | Tail gas treatment device for producing nitrobenzenesulfonyl chloride |
| CN104083957A (en) * | 2014-07-21 | 2014-10-08 | 好科（上海）环保科技有限公司 | Method for recycling dusty waste gas |
| CN204281305U (en) * | 2014-11-11 | 2015-04-22 | 柳超 | A kind for the treatment of unit of titanium tetrachloride production tail gas recycle hydrochloric acid |
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| CN205988659U (en) * | 2016-08-29 | 2017-03-01 | 金川集团股份有限公司 | A kind of hydrochloric acid mist retracting device |
| CN208089345U (en) * | 2018-04-20 | 2018-11-13 | 中铁一局集团第四工程有限公司 | A kind of tunnel counter-slope drainage system |
| CN208512215U (en) * | 2018-06-29 | 2019-02-19 | 德兴市德邦化工有限公司 | A kind of energy saving film-falling absorption tower for exhaust-gas treatment |
| CN209100084U (en) * | 2018-10-14 | 2019-07-12 | 张言海 | Sump drainage arrangement in a kind of mining air way |
| CN110117983A (en) * | 2019-05-25 | 2019-08-13 | 江山市蓝科科技有限公司 | Drainage system is used in a kind of production of HDPE double-wall corrugated pipe |
| CN210343420U (en) * | 2019-06-26 | 2020-04-17 | 成岩岩 | Drainage device of mine well |
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Application publication date: 20201110 |
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