CN217662499U - Gas-liquid separation retreatment device for aluminum ash harmless treatment - Google Patents
Gas-liquid separation retreatment device for aluminum ash harmless treatment Download PDFInfo
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- CN217662499U CN217662499U CN202221021348.5U CN202221021348U CN217662499U CN 217662499 U CN217662499 U CN 217662499U CN 202221021348 U CN202221021348 U CN 202221021348U CN 217662499 U CN217662499 U CN 217662499U
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Abstract
The utility model belongs to the technical field of aluminium ash innocent treatment. A gas-liquid separation retreatment device used in aluminum ash innocent treatment is used for treating mixed gas in the aluminum ash innocent treatment and comprises a gas-liquid separator, a sodium hydrosulfide neutralization tank and an absorption tower, wherein the gas-liquid separator is used for cooling the mixed gas and separating water vapor in the mixed gas; the gas outlet of the gas-liquid separator is communicated with the sodium hydrosulfide neutralizing tank, and the sodium hydrosulfide neutralizing tank is used for absorbing hydrogen sulfide gas in the dried mixed gas; and the gas outlet of the sodium hydrosulfide neutralizing tank is connected with the gas inlet at the bottom of the absorption tower, and the absorption tower is used for absorbing ammonia gas in the mixed gas. This application can carry out effectual separation, absorption, recovery and recycle to vapor, ammonia and hydrogen sulfide among the mist to the innocent treatment of aluminium ash technology has been ensured.
Description
Technical Field
The utility model belongs to the technical field of the aluminium ash innocent treatment, concretely relates to gas-liquid separation retreatment device for among aluminium ash innocent treatment.
Background
The aluminum ash contains a large amount of substances harmful to the environment, and the treatment work of the aluminum ash gradually realizes the application of large-scale industrialization along with the continuous research and development of the treatment technology of the aluminum ash process. However, the traditional treatment mode is difficult to properly treat the harmful substances and cannot fundamentally solve the problem of harmless treatment of the aluminum ash. For example, when the mixed gas generated by the reaction of the aluminum ash slurry in the reaction tank contains ammonia gas, methane, hydrogen gas, hydrogen sulfide, etc., if the mixed gas is not treated, the environment is seriously polluted, and the conventional treatment modes are often extensive treatment modes, so that the mixed gas cannot be effectively treated and resources can not be recycled.
Disclosure of Invention
The utility model discloses the purpose is to the problem that exists and not enough above-mentioned, provides a gas-liquid separation retreatment device for among aluminum ash innocent treatment, and it can carry out effectual separation, absorption, recovery and recycle to vapor, ammonia and hydrogen sulfide among the mist to the innocent treatment of aluminum ash technology has been ensured.
In order to realize the purpose, the adopted technical scheme is as follows:
a gas-liquid separation retreatment device for use in aluminum ash innocent treatment, which is used for treating mixed gas in the aluminum ash innocent treatment, and comprises:
the gas-liquid separator is used for cooling the mixed gas and separating water vapor in the mixed gas;
the gas outlet of the gas-liquid separator is communicated with the sodium hydrosulfide neutralizing tank, and the sodium hydrosulfide neutralizing tank is used for absorbing hydrogen sulfide gas in the dried mixed gas; and
the gas outlet of the sodium hydrosulfide neutralization tank is connected with the gas inlet at the bottom of the absorption tower, and the absorption tower is used for absorbing ammonia gas in the mixed gas;
the absorption tower comprises a tower body and a plurality of groups of absorption units which are sequentially arranged in the tower body from bottom to top, a partition plate is arranged in the tower body between two adjacent groups of absorption units, a vent pipe communicated with an upper cavity and a lower cavity is arranged on the partition plate, and liquid storage tanks are formed at the bottom of the tower body and the upper parts of the partition plates;
the absorption unit comprises a first packing layer, a circulating pump, a heat exchanger and a first spray head, a liquid inlet of the circulating pump is communicated with a liquid storage tank on the lower portion of the corresponding first packing layer, the first spray head is arranged on the upper portion of the corresponding first packing layer, and a liquid outlet of the circulating pump is communicated with the corresponding first spray head after passing through the heat exchanger.
According to the utility model is used for gas-liquid separation in the aluminium ash innocent treatment device again, preferably, still include the soft water and spray the unit, the soft water sprays the unit and includes:
a soft water delivery pipe;
the second spray header is arranged at the top of the tower body, and a second packing layer is arranged at the lower part of the second spray header; and
and the soft water cooler and the soft water intermediate tank are arranged between the soft water delivery pipeline and the second spray header.
According to the utility model is used for gas-liquid separation in the innocent treatment of aluminium ash device of retreating, preferably, vapour and liquid separator includes:
a separator tank;
the condensation cylinder is arranged on the separator tank body, a condensation heat exchange pipe is arranged in the condensation cylinder, and an air inlet is formed in the top of the condensation cylinder; and
the gas collecting cylinder is arranged on the separator tank body, a gas outlet is formed in the top of the gas collecting cylinder, and a temperature detection sensor is arranged on the side wall of the gas collecting cylinder;
an outer discharge port is arranged at the lower part of the separator tank body and is connected with a condensed water discharge pump.
According to the utility model is used for gas-liquid separation in aluminium ash innocent treatment retreatment device, preferably, sodium hydrosulfide neutralization tank includes:
the device comprises a neutralization tank body, wherein a sodium hydroxide solution inlet pipe is arranged on the neutralization tank body, the bottom of the neutralization tank body is connected with a sodium hydrosulfide discharge pump through a sodium hydrosulfide discharge port, and a heat exchange coil is also arranged in the neutralization tank body;
the reaction barrel is arranged at the upper part of the neutralization tank body, and a sodium hydroxide circulating pump and a sodium hydroxide circulating pipeline are arranged between the bottom of the neutralization tank body and the top of the reaction barrel; and
the reaction filler is arranged in the reaction cylinder, a gas distribution pipe connected with a gas-liquid separator is arranged at the lower part of the reaction filler, and a sodium hydroxide liquid distribution pipeline connected with a sodium hydroxide circulating pipeline is arranged at the upper part of the reaction filler.
According to the utility model discloses a gas-liquid separation retreatment device for among aluminum ash innocent treatment, preferably sodium hydrosulfide neutralization tank with be provided with raw materials cooler and gas-liquid separation jar between the absorption tower, the gas outlet on gas-liquid separation jar upper portion and the air inlet intercommunication of absorption tower bottom, the liquid outlet of gas-liquid separation jar bottom with one of them reservoir intercommunication in the absorption tower.
According to the utility model is used for gas-liquid separation in the aluminium ash innocent treatment device again, preferably, there is the ammonia pump bottom of absorption tower through flowing back pipeline intercommunication.
By adopting the technical scheme, the beneficial effects are as follows:
this application can be so that mist cools down through vapour and liquid separator's setting, forms water after the vapor condensation, realizes the separation of vapor, and the gaseous drying of guarantee avoids influencing the calorific value of gas itself. This application can be so that hydrogen sulfide gas and sodium hydroxide solution carry out abundant mixing reaction through the setting of sodium hydrosulfide neutralization tank to absorb the hydrogen sulfide gas among the mist, with this make gaseous purification treatment that obtains further. The absorption tower of this application can carry out absorption many times to the ammonia to the absorption rate of at utmost improvement ammonia makes methane and hydrogen realize further purification.
The application can effectively separate, absorb and recycle the water vapor, ammonia gas and hydrogen sulfide in the mixed gas, thereby ensuring the harmless treatment of the aluminum ash process and being convenient for realizing the application of large-scale industrialization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described hereinafter. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.
FIG. 1 is a schematic structural view of a gas-liquid separation reprocessing apparatus for use in the innocent treatment of aluminum ash according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a gas-liquid separator according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a sodium hydrosulfide neutralization tank according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an absorption tower according to an embodiment of the present invention.
Number in the figure:
100 is a gas-liquid separator, 101 is a separator tank body, 102 is a condensation cylinder body, 103 is a gas collecting cylinder body, 104 is a condensation heat exchange pipe, 105 is a temperature detection sensor, and 106 is a condensed water discharge pump;
200 is a sodium hydrosulfide neutralizing tank, 201 is a neutralizing tank body, 202 is a reaction cylinder body, 203 is reaction filler, 204 is a sodium hydroxide solution inlet pipe, 205 is a sodium hydrosulfide discharging pump, 206 is a sodium hydroxide circulating pump, and 207 is a heat exchange coil pipe;
300 is an absorption tower, 301 is a tower body, 302 is a partition plate, 303 is an air pipe, 304 is a first packing layer, 305 is a circulating pump, 306 is a heat exchanger, 307 is a first spray header, 308 is a soft water conveying pipeline, 309 is a second spray header, 310 is a soft water cooler, 311 is a soft water intermediate tank, 312 is a second packing layer, and 313 is an ammonia pump;
a raw material cooler 401 and a gas separation tank 402.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art.
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for describing various elements of the present invention, and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that intervening elements may be present therebetween; i.e., positional relationships encompassing both direct and indirect connections.
It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", and the like, are used only for indicating relative positional relationship, which is for convenience of describing the present invention, and not that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object to be described changes, the relative positional relationship may also change accordingly.
Referring to fig. 1 to 4, a gas-liquid separation retreatment device for aluminum ash innocent treatment is used for treating mixed gas in the aluminum ash innocent treatment and mainly comprises a gas-liquid separator 100, a sodium hydrosulfide neutralization tank 200 and an absorption tower 300.
Gas-liquid separator 100: the gas-liquid separator comprises a separator tank body 101, a condensation cylinder body 102 arranged on the separator tank body and a gas collection cylinder body 103 arranged on the separator tank body, wherein a condensation heat exchange pipe 104 is arranged in the condensation cylinder body 102, and the top of the condensation cylinder body is provided with a gas inlet; the top of the gas collecting cylinder body 103 is provided with a gas outlet, and the side wall of the gas collecting cylinder body is provided with a temperature detection sensor 105; an external discharge port is arranged at the lower part of the separator tank body, and the external discharge port is connected with a condensed water discharge pump 106.
In the working process, the mixed gas enters the condensation cylinder body through the gas inlet at the upper part of the condensation cylinder body, a condensation medium is introduced into the condensation heat exchange tube in the condensation cylinder body, so that the temperature of the mixed gas is reduced, the water vapor is condensed into liquid and flows into the separator tank body, and the rest mixed gas enters the gas collection cylinder body and is led out through the gas outlet at the upper part of the gas collection cylinder body to enter the next working procedure. When the solution in the separator tank converges to a certain amount, the condensed water is discharged by a condensed water discharge pump. In order to facilitate the temperature control, a temperature detection sensor is arranged on the gas collecting cylinder body, and the separation effect of the water vapor in the mixed gas can be detected, so that the parameters can be adjusted, and the condensation separation effect of the water vapor is improved.
Sodium hydrosulfide neutralization tank: the gas outlet of the gas-liquid separator 100 is communicated with the sodium hydrosulfide neutralization tank 200, and the sodium hydrosulfide neutralization tank 200 is used for absorbing hydrogen sulfide gas in the dried mixed gas; the sodium hydrosulfide neutralization tank 200 comprises a neutralization tank body 201, a reaction cylinder 202 and reaction fillers 203, wherein the reaction cylinder 202 and the reaction fillers 203 are arranged on the upper part of the neutralization tank body 201, a sodium hydroxide solution inlet pipe 204 is arranged on the neutralization tank body 201, the bottom of the neutralization tank body 201 is connected with a sodium hydrosulfide discharge pump 205 through a sodium hydrosulfide discharge port, and a heat exchange coil 207 is also arranged in the neutralization tank body; a sodium hydroxide circulating pump 206 and a sodium hydroxide circulating pipeline are arranged between the bottom of the neutralization tank body 201 and the top of the reaction cylinder 202; the reaction filler 203 is arranged in the reaction cylinder 202, a gas distribution pipe connected with the gas-liquid separator 100 is arranged at the lower part of the reaction filler 203, and a sodium hydroxide liquid distribution pipe connected with a sodium hydroxide circulation pipe is arranged at the upper part of the reaction filler 203.
In the process of absorbing the hydrogen sulfide gas, firstly, adding a sodium hydroxide solution into the neutralization tank body, conveying the solution in the neutralization tank body to the upper part of the reaction filler through a sodium hydroxide circulating pump, completing spraying, reacting in the reaction filler after the mixed gas enters from the lower part of the reaction filler, thereby forming a sodium hydrosulfide solution, absorbing the hydrogen sulfide gas in the mixed gas, and discharging the purified gas through a gas outlet in the upper part of the reaction cylinder. When the solution in the tank body of the neutralization tank needs to be discharged, the solution is discharged by a sodium hydrosulfide discharge pump.
An absorption tower: the absorption tower 300 is used for absorbing ammonia gas in the mixed gas. Absorption tower 300 includes tower body 301, from lower to upper arranges the multiunit absorption unit in the tower body in proper order, and this application divide into hypomere absorption unit (A in the picture), middle section absorption unit (B in the picture) and upper segment absorption unit (C in the picture), is provided with division board 302 in the tower body between the adjacent two sets of absorption units, be provided with the breather pipe 303 of cavity about the intercommunication on the division board 302, the bottom of tower body 301, each division board 302 upper portion all forms the reservoir.
Further, an air outlet of the sodium hydrosulfide neutralization tank 200 is connected with an air inlet at the bottom of the absorption tower 300, a raw material cooler 401 and an air-liquid separation tank 402 are arranged between the sodium hydrosulfide neutralization tank 200 and the absorption tower, an air outlet at the upper part of the air-liquid separation tank 402 is communicated with an air inlet at the bottom of the absorption tower, an air outlet at the bottom of the air-liquid separation tank 402 is communicated with one of the liquid storage tanks in the absorption tower, and as shown in the figure, an air outlet at the bottom of the air-liquid separation tank 402 is communicated with the liquid storage tank of the middle-section absorption unit in the absorption tower.
Each absorption unit in this embodiment includes a first packing layer 304, a circulation pump 305, a heat exchanger 306, and a first shower head 307, a liquid inlet of the circulation pump 305 is communicated with a liquid storage tank at a lower portion of the corresponding first packing layer 304, the first shower head 307 is disposed at an upper portion of the corresponding first packing layer 304, and a liquid outlet of the circulation pump 305 is communicated with the corresponding first shower head 307 after passing through the heat exchanger 306.
In order to further realize the absorption to the ammonia, this application still is provided with soft water and sprays the unit, and soft water sprays the unit and includes soft water pipeline 308, lays the second shower head 309 at tower body top and setting up soft water cooler 310 and soft water intermediate tank 311 between soft water pipeline and the second shower head 309 lower part is provided with second packing layer 312.
In order to facilitate the discharge of ammonia water in the absorption tower, an ammonia water pump 313 is communicated with the bottom of the absorption tower 300 through a liquid discharge pipeline. The discharge can be carried out according to the liquid level height in the absorption tower.
The mixed gas enters the system from the main pipeline after being collected from the reaction tank, and because the mixed gas contains a large amount of water vapor, if gas-liquid separation is not carried out, the separated combustible gas contains moisture, and the heat value of the combustible gas is influenced. Therefore, the water vapor firstly passes through the gas-liquid separator device and is pre-cooled in the gas-liquid separator, and the cooled water vapor becomes certain condensed water which is stored in the horizontal separator tank body through self-flowing. Clean gas exits from the side with the temperature sensing sensor. The gas which does not participate in the reaction is cooled to normal temperature in the raw material cooler, and passes through the gas-liquid separation tank, then enters the bottom of the absorption tower, passes through the gas-liquid separation tank, and the separated ammonia water sinks to the bottom of the absorption tower, the gas which is not absorbed enters the filler of the lower section tower, is mixed with the dilute ammonia water flowing down from the upper part and is absorbed, and the ammonia water enters the bottom of the absorption tower downwards. The circulating pump in the lower section absorption unit is pumped into the heat exchanger in the lower section absorption unit, the first spray header in the lower section absorption unit is used for leaching after cooling, the ammonia gas which goes upwards is absorbed in a circulating manner, the rest ammonia gas continues to go upwards into the first filler of the middle section absorption unit, the ammonia gas is mixed with the dilute ammonia water flowing down from the upper part and is absorbed, the ammonia water is stored downwards in the liquid storage tank of the middle section absorption unit, the circulating pump in the middle section absorption unit is pumped into the middle section tower heat exchanger, the ammonia gas which goes upwards is leached by the first spray header in the middle section absorption unit after cooling, the ammonia gas flows into the bottom of the absorption tower when the ammonia water exceeds the liquid level of the overflow pipe, and the ammonia gas is reabsorbed by the upper section absorption unit in the same way. The residual ammonia gas which is not absorbed and the soft water sprayed from the top of the tower are absorbed into dilute ammonia water, the dilute ammonia water enters the upper section absorption unit downwards, 10% of ammonia water products at the bottom of the absorption tower are conveyed out of the room from the bottom of the absorption tower by an ammonia water pump, the ammonia content in the non-condensable gas at the top of the tower is less than or equal to 10ppm, and the ammonia water products are conveyed to the next procedure.
The term "and/or" herein means that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
While the above description has described in detail the preferred embodiments for carrying out the invention, it should be understood that these embodiments are presented by way of example only, and are not intended to limit the scope, applicability, or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications may be made to the foregoing embodiments by those skilled in the art in light of the teachings of the present disclosure, and such modifications are intended to be within the scope of the present disclosure.
Claims (6)
1. A gas-liquid separation retreatment device for use in aluminum ash innocent treatment, which is used for treating mixed gas in the aluminum ash innocent treatment, and is characterized by comprising:
the gas-liquid separator is used for cooling the mixed gas and separating water vapor in the mixed gas;
the gas outlet of the gas-liquid separator is communicated with the sodium hydrosulfide neutralizing tank, and the sodium hydrosulfide neutralizing tank is used for absorbing hydrogen sulfide gas in the dried mixed gas; and
the gas outlet of the sodium hydrosulfide neutralization tank is connected with the gas inlet at the bottom of the absorption tower, and the absorption tower is used for absorbing ammonia gas in the mixed gas;
the absorption tower comprises a tower body and a plurality of groups of absorption units which are sequentially arranged in the tower body from bottom to top, a partition plate is arranged in the tower body between two adjacent groups of absorption units, a vent pipe communicated with an upper cavity and a lower cavity is arranged on the partition plate, and liquid storage tanks are formed at the bottom of the tower body and the upper parts of the partition plates;
the absorption unit comprises a first packing layer, a circulating pump, a heat exchanger and a first spray head, a liquid inlet of the circulating pump is communicated with a liquid storage tank on the lower portion of the corresponding first packing layer, the first spray head is arranged on the upper portion of the corresponding first packing layer, and a liquid outlet of the circulating pump is communicated with the corresponding first spray head after passing through the heat exchanger.
2. The gas-liquid separation retreatment device for use in the innocent treatment of aluminum ash according to claim 1, further comprising a soft water spray unit comprising:
a soft water delivery pipe;
the second spray header is arranged at the top of the tower body, and a second packing layer is arranged at the lower part of the second spray header; and
and the soft water cooler and the soft water intermediate tank are arranged between the soft water delivery pipeline and the second spray header.
3. The apparatus for gas-liquid separation and reprocessing for use in the innocent treatment of aluminum ash according to claim 1, wherein said gas-liquid separator includes:
a separator tank;
the condensation cylinder is arranged on the separator tank body, a condensation heat exchange pipe is arranged in the condensation cylinder, and an air inlet is formed in the top of the condensation cylinder; and
the gas collecting cylinder is arranged on the separator tank body, a gas outlet is formed in the top of the gas collecting cylinder, and a temperature detection sensor is arranged on the side wall of the gas collecting cylinder;
an outer discharge port is arranged at the lower part of the separator tank body and is connected with a condensed water discharge pump.
4. The apparatus for gas-liquid separation and reprocessing for use in the innocent treatment of aluminum ash according to claim 1, wherein said sodium hydrosulfide neutralization tank includes:
the device comprises a neutralization tank body, wherein a sodium hydroxide solution inlet pipe is arranged on the neutralization tank body, the bottom of the neutralization tank body is connected with a sodium hydrosulfide discharge pump through a sodium hydrosulfide discharge port, and a heat exchange coil is also arranged in the neutralization tank body;
the reaction barrel is arranged at the upper part of the neutralization tank body, and a sodium hydroxide circulating pump and a sodium hydroxide circulating pipeline are arranged between the bottom of the neutralization tank body and the top of the reaction barrel; and
the reaction filler is arranged in the reaction cylinder, a gas distribution pipe connected with the gas-liquid separator is arranged at the lower part of the reaction filler, and a sodium hydroxide liquid distribution pipe connected with a sodium hydroxide circulating pipe is arranged at the upper part of the reaction filler.
5. The apparatus of claim 1, wherein a feed cooler and a gas-liquid separation tank are provided between the sodium hydrosulfide neutralization tank and the absorption tower, a gas outlet at the upper part of the gas-liquid separation tank is communicated with a gas inlet at the bottom of the absorption tower, and a liquid outlet at the bottom of the gas-liquid separation tank is communicated with one of the liquid storage tanks in the absorption tower.
6. The device for the gas-liquid separation and retreatment in the harmless treatment of the aluminum ash as recited in claim 1, wherein the bottom of the absorption tower is communicated with an ammonia pump through a liquid discharge pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221021348.5U CN217662499U (en) | 2022-04-29 | 2022-04-29 | Gas-liquid separation retreatment device for aluminum ash harmless treatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221021348.5U CN217662499U (en) | 2022-04-29 | 2022-04-29 | Gas-liquid separation retreatment device for aluminum ash harmless treatment |
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| CN217662499U true CN217662499U (en) | 2022-10-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116621117A (en) * | 2023-05-24 | 2023-08-22 | 上海汉兴化工科技有限公司 | Preparation method of high-purity hydrogen for fuel cell |
-
2022
- 2022-04-29 CN CN202221021348.5U patent/CN217662499U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116621117A (en) * | 2023-05-24 | 2023-08-22 | 上海汉兴化工科技有限公司 | Preparation method of high-purity hydrogen for fuel cell |
| CN116621117B (en) * | 2023-05-24 | 2024-02-02 | 上海汉兴化工科技有限公司 | Preparation method of high-purity hydrogen for fuel cell |
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