CN212119552U - Natrii sulfas cooling tail gas alkali wash tower - Google Patents
Natrii sulfas cooling tail gas alkali wash tower Download PDFInfo
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- CN212119552U CN212119552U CN202020336057.XU CN202020336057U CN212119552U CN 212119552 U CN212119552 U CN 212119552U CN 202020336057 U CN202020336057 U CN 202020336057U CN 212119552 U CN212119552 U CN 212119552U
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Abstract
The utility model provides a glauber's salt cooling tail gas caustic wash tower, including the caustic wash tower, the waste liquid recovery system who links to each other with the caustic wash tower, the alkali lye automatic configuration system who links to each other with caustic wash tower and waste liquid recovery system, waste liquid recovery system includes filtering ponds and waste liquid storage tank, and alkali lye automatic configuration system includes dense alkali lye reservoir and allocation pond. By adopting the scheme, after mirabilite cooling tail gas is subjected to alkaline washing by the alkaline washing tower, the waste alkali liquor with the neutralized concentration enters the waste liquor recovery system connected with the alkaline washing tower for storage, and the waste alkali liquor is treated by the alkali liquor automatic configuration system connected with the waste liquor recovery system and enters the alkaline washing tower again for circulation, so that the circulation utilization rate of the alkali liquor is enhanced, and the alkali liquor cost is reduced.
Description
Technical Field
The utility model relates to a glauber's salt cooling tail gas caustic wash tower belongs to caustic wash tower technical field.
Background
Mirabilite, which is produced mostly in seaside alkaline earth areas, mineral spring and wet caves near salt farms, is a crystal of sulfate mineral mirabilite, which is refined and processed into a crystal, has the efficacy of purging and clearing heat medically, and is widely applied to the drying process of various industrial products and the sodium sulfide industry industrially.
However, the mirabilite can produce a large amount of waste water, waste gas and smoke in the production process, which causes environmental pollution in several kilometers around and even damages to farmlands. The acidic waste gas generated in the process of preparing mirabilite mainly needs to be treated by an alkaline washing tower, and how to save the use amount of alkali liquor and recycle the alkali liquor on the premise of ensuring the reaction in the tower is thorough in the process is one of the important links of industrial production of mirabilite and treatment of mirabilite waste gas at the present stage.
Disclosure of Invention
The utility model aims to solve the problems existing in the prior art and provide a mirabilite cooling tail gas alkaline washing tower.
In order to achieve the above object, the present invention is achieved by the following technical solutions, including:
the utility model provides a glauber's salt cooling tail gas caustic wash tower, including the caustic wash tower, the waste liquid recovery system who links to each other with the caustic wash tower, the alkali lye automatic configuration system who links to each other with caustic wash tower and waste liquid recovery system, the caustic wash tower bottom includes collecting tank and the alkali lye drain pipe that links to each other with the collecting tank, waste liquid recovery system includes filter tank and waste liquid storage tank, the alkali lye drain pipe links to each other with waste liquid recovery system's filter tank entry, alkali lye automatic configuration system includes dense alkali lye reservoir and allocation pool, the allocation pool includes mutually independent stoste chamber, the waste liquid chamber, reservoir chamber and allocation chamber, stoste chamber, waste liquid chamber and reservoir chamber link to each other with the allocation chamber through the pipeline respectively.
By adopting the scheme, after mirabilite cooling tail gas is subjected to alkaline washing by an alkaline washing tower, neutralized waste alkali liquor enters a waste liquor recovery system connected with the alkaline washing tower, the neutralized waste alkali liquor firstly flows into a filter tank, scum impurities in the waste alkali liquor in the filter tank are filtered, the neutralized waste alkali liquor exists in a waste liquor storage tank, the waste alkali liquor stored in the waste liquor storage tank is treated by an alkali liquor automatic configuration system connected with the waste liquor recovery system and enters the alkaline washing tower again for circulation, a concentrated alkali liquor storage tank is used for storing 30% NaOH concentrated alkali liquor, and a blending tank is used for blending 10% NaOH alkaline washing liquor, wherein a stock solution cavity, a waste liquid cavity and a water storage chamber are respectively used for temporarily storing 30% NaOH concentrated alkali liquor, waste alkali liquor and industrial water.
Preferably, a waste liquid discharge valve is fixedly arranged at the position of the alkali liquor outlet pipe.
Preferably, a liquid level meter is arranged in the waste liquid storage tank, and the liquid level meter and the waste liquid discharge valve are respectively controlled by a controller.
By adopting the scheme, waste alkali liquor in the alkaline tower enters the filter tank through the alkali liquor outlet pipe, is collected in the liquid collecting tank after being filtered, the liquid level meter detects the content of the alkali liquor in the liquid collecting tank, and the controller controls the waste liquor discharge valve to be closed after the content of the alkali liquor reaches a certain height interval.
Preferably, the waste reservoir is connected to the waste chamber by a conduit.
Preferably, the upper part of the alkaline tower comprises an alkaline liquid inlet pipe, and the alkaline liquid inlet pipe is connected with a liquid outlet of the blending cavity.
Preferably, the alkaline tower also comprises a sprayer connected with the alkaline liquor inlet pipe.
Preferably, the alkaline tower also comprises a pall ring packing layer.
By adopting the scheme, the gas-liquid contact area is enlarged as much as possible by utilizing the pall ring packing layer, and the alkaline washing effect of waste gas is improved.
Preferably, control valves are arranged between the blending cavity and the stock solution cavity, between the blending cavity and the waste solution cavity and between the blending cavity and the water storage chamber, a pH meter is arranged in the blending cavity, and the pH meter and the control valves are respectively controlled by controllers.
By adopting the scheme, the pH meter is used for measuring the concentration of the alkaline washing liquid in the blending cavity, and the controller is used for controlling the on-off of the control valve.
Preferably, a wire mesh demister is arranged at the top of the alkaline tower.
Preferably, mirabilite cooling tail gas caustic wash tower still includes the drainage tube of vertical setting, and the top of drainage tube is connected at the silk screen defroster lower extreme, and the drainage tube end is located the collecting tank top.
Adopt above-mentioned scheme, the silk screen defroster is arranged in cleaing away the moisture and the atomizing NaOH solution that contain the acid material that carry in the gas, and the drainage tube is with the moisture drainage that collects to collect in the liquid collecting tank.
The utility model has the advantages that:
(1) the utility model discloses a waste liquor recovery system and this two systems of alkali lye automatic configuration system recycle spent lye allotment to new alkali wash that accords with the concentration requirement carries out alkali wash to glauber's salt cooling tail gas, practice thrift the use cost of 30% dense alkali lye under the condition that can guarantee to wash with alkali the effect.
(2) The utility model discloses an alkali lye automatic configuration system mainly includes four cavitys of controller and stoste chamber, waste liquid chamber, reservoir chamber and allotment pond, and the concentration of keeping in the stoste chamber is 30% NaOH concentrated alkali liquor, the circulating concentration of keeping in the waste liquid chamber is 3% NaOH waste alkali liquid, reservoir chamber industrial water, allotment pond and the three cavity of the aforesaid link to each other alone, and the controller is automatic to be allotment operation allotment and is out the NaOH alkaline wash that concentration is 10%.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the entire mirabilite cooling tail gas alkaline washing tower of the present invention;
fig. 2 is a schematic diagram of the connection relationship of the controller.
In the figure: 1 alkaline tower, 11 air inlet pipes, 12 exhaust pipes, 13 alkali liquor inlet pipes, 14 alkali liquor outlet pipes, 141 waste liquor discharge valves, 15 liquid collecting tanks, 16 sprayers, 17 wire mesh demisters, 18 drainage pipes, 19 pall ring packing layers, 21 filter tanks, 211 liquid level meters, 22 waste liquor storage tanks, 31 concentrated alkali liquor storage tanks, 32 blending tanks, 321 stock solution cavities, 322 waste solution cavities, 323 water storage chambers, 324 blending cavities, 325 stock solution control valves, 326 waste solution control valves, 327 water control valves and 328 pH meters.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention easy to understand, the invention is further explained by combining the specific embodiments.
Example 1
As shown in figure 1, the mirabilite cooling tail gas alkaline washing tower comprises an alkaline washing tower 1, a waste liquid recovery system connected with the alkaline washing tower 1, and an automatic alkaline liquor configuration system connected with the alkaline washing tower 1 and the waste liquid recovery system, wherein all the parts are connected through an anti-corrosion pipeline provided with a circulating pump.
The alkaline tower 1 is including locating the inlet channel 11 at the bottom of the tower, the exhaust duct 12 at the top of the tower, the alkali lye feed pipe 13 and the alkali lye drain pipe 14 of bottom of the first half of the tower body, 14 mouth fixed mounting of alkali lye drain pipe have waste liquid discharge valve 141, still include silk screen defroster (HG/T21618 type) 17 from last to bottom in the alkaline tower 1 in proper order, 16 the shower that links to each other with alkali lye feed pipe 13, can increase gas-liquid area of contact's pall packing layer 19, drainage tube 18 and collecting basin 15, the upper end of drainage tube 18 links to each other with silk screen defroster 17 lower extreme, and drainage tube 18 end is located the collecting basin 15 top, collecting basin 15 is linked together with alkali lye drain pipe 14.
The waste liquid recovery system comprises a filter tank 21 and a waste liquid storage tank 22, wherein a liquid level meter 211(HHH-L-D type) is arranged in the waste liquid storage tank 22, an inlet of the filter tank 21 is connected with an alkali liquid outlet pipe 14 through a pipeline provided with a circulating pump, and a PLC (6ED1052-1HB08-0BA0 type) is used for respectively controlling the liquid level meter 211 and a waste liquid discharge valve 141 in combination with a figure 2.
Alkali lye automatic configuration system includes concentrated alkali lye reservoir 31 and allotment pond 32, allotment pond 32 includes mutually independent stoste chamber 321, waste liquid chamber 322, reservoir chamber 323 and allotment chamber 324, stoste chamber 321 links to each other with concentrated alkali lye reservoir 31, waste liquid chamber 322 links to each other with waste liquid storage tank 22, reservoir chamber 323 is connected with industrial water pipeline, stoste chamber 321, waste liquid chamber 322 and reservoir chamber 323 link to each other with allotment chamber 324 respectively, combine figure 2, stoste chamber 321, all be equipped with the control valve between waste liquid chamber 322 and reservoir chamber 323 and the allotment chamber 324: a stock solution control valve 325 is arranged between the stock solution cavity 321 and the preparing cavity 324, a waste solution control valve 326 is arranged between the waste solution cavity 322 and the preparing cavity 324, a water control valve 327 is arranged between the water storage chamber 323 and the preparing cavity 324, a pH meter (MIK-PH5022 type) 328 is arranged in the preparing cavity 324, similarly, the stock solution control valve 325, the waste solution control valve 326, the water control valve 327 and the pH meter 328 are respectively controlled by a controller, and the liquid outlet of the preparing cavity 324 is connected with the alkali liquor inlet pipe 13.
In conclusion, the working principle of the mirabilite cooling tail gas alkaline washing tower is as follows: the mirabilite cooling tail gas is washed by alkali through an alkali washing tower 1, NaOH alkali liquor with the concentration of 10% is neutralized and reduced and flows to a liquid collecting tank 15, meanwhile, a silk screen demister 17 collects the atomized NaOH solution in the tower and also flows into the liquid collecting tank 15 through a drainage tube 18, the waste alkali liquor is gathered in the liquid collecting tank 15 and flows into a filter tank 21 through an alkali liquor outlet tube 14, scum impurities in the waste alkali liquor in the filter tank 21 are filtered, purified waste alkali liquor exists in a waste liquid storage tank 22, if a liquid level meter 211 detects that the content of the waste liquid in the waste liquid storage tank 22 reaches a certain height, a controller closes a waste liquid discharge valve 141, the waste alkali liquor in the waste liquid storage tank 22 is introduced into a waste liquid cavity 322 in an automatic alkali liquor configuration system through a circulating pump for temporary storage, meanwhile, a raw liquid cavity 321 temporarily stores 30% NaOH alkali liquor in a concentrated alkali liquor storage tank 31, a water storage chamber 323 temporarily stores industrial water for, the concentration of the alkaline washing liquid in the mixing cavity 324 is measured by a pH meter 328, and the ratio of 30% NaOH concentrated alkaline liquid, waste alkaline liquid and industrial water is adjusted by controlling the on-off of each control valve through a controller, so that 10% NaOH circulating alkaline washing liquid is prepared.
Having thus shown the basic principles and essential features of the invention and its advantages, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A mirabilite cooling tail gas alkaline washing tower comprises an alkaline washing tower (1), a waste liquid recovery system connected with the alkaline washing tower (1), and an automatic alkali liquor configuration system connected with the alkaline washing tower (1) and the waste liquid recovery system, the alkaline washing tower is characterized in that the bottom of the alkaline washing tower (1) comprises a liquid collecting tank (15) and an alkaline liquid outlet pipe (14) connected with the liquid collecting tank (15), the waste liquid recovery system comprises a filter tank (21) and a waste liquid storage tank (22), the alkaline liquid outlet pipe (14) is connected with an inlet of the filter tank (21) of the waste liquid recovery system, the alkaline liquid automatic configuration system comprises a concentrated alkaline liquid storage tank (31) and a blending tank (32), the blending tank (32) comprises a raw liquid cavity (321), a waste liquid cavity (322), a water storage chamber (323) and a blending cavity (324) which are independent of each other, the raw liquid cavity (321), the waste liquid cavity (322) and the water storage chamber (323) are connected with the blending cavity (324) through pipelines respectively.
2. The mirabilite cooling tail gas alkaline washing tower according to claim 1, characterized in that a waste liquid discharge valve (141) is fixedly installed at the mouth of the lye outlet pipe (14).
3. The mirabilite cooling tail gas alkaline washing tower according to claim 2, characterized in that a liquid level meter (211) is arranged in the waste liquid storage tank (22), and the liquid level meter (211) and the waste liquid discharge valve (141) are respectively controlled by a controller.
4. A mirabilite cooling tail gas caustic wash tower according to claim 3, characterized in that the waste liquid storage tank (22) is connected to the waste liquid chamber (322) through a pipeline.
5. The mirabilite cooling tail gas alkaline washing tower according to claim 4, characterized in that the upper part of the alkaline washing tower (1) comprises an alkaline liquid inlet pipe (13), and the alkaline liquid inlet pipe (13) is connected with the liquid outlet of the mixing cavity (324).
6. A mirabilite cooling tail gas alkaline washing tower according to claim 5, characterized in that the alkaline washing tower also comprises a sprayer (16) connected with the alkaline liquid inlet pipe (13).
7. The mirabilite cooling tail gas alkaline washing tower according to claim 6, characterized in that the alkaline washing tower further comprises a pall ring packing layer (19).
8. The mirabilite cooling tail gas alkaline washing tower according to claim 7, characterized in that control valves are respectively arranged between the blending cavity (324) and the raw liquid cavity (321), between the waste liquid cavity (322) and between the blending cavity (324) and the water storage chamber (323), a pH meter (328) is arranged in the blending cavity (324), and the pH meter (328) and the control valves are respectively controlled by a controller.
9. A mirabilite cooling tail gas alkaline washing tower according to claim 8, characterized in that a wire mesh demister (17) is arranged at the top of the alkaline washing tower (1).
10. The mirabilite cooling tail gas alkaline washing tower according to claim 9, characterized by further comprising a vertically arranged draft tube (18), wherein the top end of the draft tube (18) is connected to the lower end of the wire mesh demister (17), and the tail end of the draft tube (18) is located above the liquid collecting tank (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020336057.XU CN212119552U (en) | 2020-03-17 | 2020-03-17 | Natrii sulfas cooling tail gas alkali wash tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020336057.XU CN212119552U (en) | 2020-03-17 | 2020-03-17 | Natrii sulfas cooling tail gas alkali wash tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212119552U true CN212119552U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020336057.XU Active CN212119552U (en) | 2020-03-17 | 2020-03-17 | Natrii sulfas cooling tail gas alkali wash tower |
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| Country | Link |
|---|---|
| CN (1) | CN212119552U (en) |
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2020
- 2020-03-17 CN CN202020336057.XU patent/CN212119552U/en active Active
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