CN217041973U - Automatic continuous production system of by-product hydrochloric acid - Google Patents
Automatic continuous production system of by-product hydrochloric acid Download PDFInfo
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- CN217041973U CN217041973U CN202220419759.3U CN202220419759U CN217041973U CN 217041973 U CN217041973 U CN 217041973U CN 202220419759 U CN202220419759 U CN 202220419759U CN 217041973 U CN217041973 U CN 217041973U
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Abstract
The utility model relates to the technical field of chemical production tail gas treatment, in particular to an automatic continuous production system of byproduct hydrochloric acid, which comprises a tail gas absorption tank, a falling film absorption tower, a spray absorption tower, a dilute hydrochloric acid storage tank, a controller, a tail gas circulation pipeline and a liquid circulation pipeline; a liquid jet pump and a liquid concentration meter are arranged in the tail gas absorption tank; a liquid circulation pipeline is communicated between the tail gas absorption tank and the falling film absorption tower; the tail gas circulation pipeline is communicated with the tail gas absorption tank, the falling film absorption tower and the spray absorption tower; the spraying absorption tower is provided with a tail gas exhaust pipeline; the liquid circulation pipeline is communicated with the spray absorption tower, the dilute hydrochloric acid storage tank and the tail gas absorption tank; the tail gas absorption tank is provided with a concentrated hydrochloric acid discharge pipeline; a concentrated hydrochloric acid discharge pipeline is provided with a concentrated hydrochloric acid discharge pump; and the controller controls the on-off of the concentrated hydrochloric acid discharge pump according to the liquid concentration signal. This scheme of adoption can carry out the accuse to concentrated hydrochloric acid discharge pump exhaust liquid concentration to prevent that discharge liquid concentration is too high, sour gas spills over, the polluted environment.
Description
Technical Field
The utility model relates to a chemical production tail gas treatment technical field, in particular to automatic continuous production system of byproduct hydrochloric acid.
Background
The production process of converting byproduct hydrogen chloride in chemical production into concentrated hydrochloric acid comprises the steps of firstly spraying and absorbing through water, then absorbing through a falling film, converting into the concentrated hydrochloric acid, spraying and absorbing tail gas, and finally treating in a VOC system. Pumping to a storage tank after a certain concentration is reached. Because the fine chemical industry is intermittent production, the byproduct hydrochloric acid is also intermittent production, and the production capacity is low; the production processes of artificially detecting the concentration of hydrochloric acid, adding water, beating acid and the like are complicated, and meanwhile, once the concentration of the hydrochloric acid is too high, acid gas overflows to pollute the environment and have potential environmental protection hazards.
SUMMERY OF THE UTILITY MODEL
The utility model provides an automatic continuous production system of byproduct hydrochloric acid can carry out the accuse to concentrated hydrochloric acid discharge pump exhaust liquid concentration to prevent that discharge liquid concentration is too high, the sour gas spills over, the polluted environment.
In order to achieve the above purpose, the basic scheme of the utility model is as follows:
the automatic continuous production system of the hydrochloric acid of by-product, including tail gas absorption tank, falling film absorber, spray absorber, dilute hydrochloric acid storage tank and controller;
a liquid jet pump and a liquid concentration meter are arranged in the tail gas absorption tank, and the liquid concentration meter is electrically connected with the controller; the liquid injection pump is used for injecting liquid into the tail gas absorption tank; the liquid concentration meter is used for detecting the concentration of liquid in the tail gas absorption tank and feeding back a liquid concentration signal to the controller;
a liquid circulation pipeline is communicated between the tail gas absorption tank and the falling film absorption tower; the liquid circulation pipeline is used for realizing the circulation flow of liquid in the tail gas absorption tank and the falling film absorption tower;
the device also comprises a tail gas circulation pipeline and a liquid circulation pipeline;
the tail gas circulation pipeline is sequentially communicated with the tail gas absorption tank, the falling film absorption tower and the spray absorption tower; tail gas is sequentially absorbed in a tail gas absorption tank, a falling film absorption tower and a spray absorption tower through a tail gas circulation pipeline; the spraying absorption tower is provided with a tail gas exhaust pipeline, and the tail gas after absorption treatment is exhausted through the tail gas exhaust pipeline;
the liquid circulation pipeline is sequentially communicated with the spray absorption tower, the dilute hydrochloric acid storage tank and the tail gas absorption tank; the liquid flows through the liquid circulation pipeline in the spray absorption tower, the dilute hydrochloric acid storage tank and the tail gas absorption tank in sequence;
the tail gas absorption tank is provided with a concentrated hydrochloric acid discharge pipeline, and liquid in the tail gas absorption tank is discharged through the concentrated hydrochloric acid discharge pipeline; a concentrated hydrochloric acid discharge pump is arranged on the concentrated hydrochloric acid discharge pipeline; the concentrated hydrochloric acid discharge pump is electrically connected with the controller;
and the controller controls the on-off of the concentrated hydrochloric acid discharge pump according to the liquid concentration signal.
The utility model discloses a principle and advantage lie in: the tail gas is treated for many times through the tail gas absorption tank, the falling film absorption tower and the spray absorption tower, and the treated tail gas is ensured to reach the standard and be discharged. A liquid circulation pipeline is communicated between the tail gas absorption tank and the falling film absorption tower to realize the circular flow of liquid, so that after the liquid in the falling film absorption tower absorbs the hydrogen chloride in the tail gas, the high-concentration liquid containing the hydrogen chloride can be discharged into the tail gas absorption tank, and the high-concentration hydrogen chloride liquid can be conveniently discharged from the tail gas absorption tank. The liquid circulation pipeline communicates the spray absorption tower in proper order, dilute hydrochloric acid storage tank and tail gas absorption tank, the liquid that has absorbed hydrogen chloride gas in the tail gas in the spray absorption tower passes through the dilute hydrochloric acid storage tank, discharge into the tail gas absorption tank, carry out the reabsorption of tail gas, at last through the liquid concentration meter in the tail gas absorption tank, detect the concentration of liquid in the tail gas absorption tank, the opening and closing of concentrated hydrochloric acid discharge pump in the concentration control tail gas absorption tank according to liquid again, can handle the accuse to concentrated hydrochloric acid discharge pump exhaust liquid concentration, thereby prevent that discharge liquid concentration is too high, sour gas overflows, the polluted environment.
Further, a concentrated hydrochloric acid flow meter is arranged on the concentrated hydrochloric acid discharge pipeline; a liquid circulation pipeline between the dilute hydrochloric acid storage tank and the tail gas absorption tank is provided with a dilute hydrochloric acid discharge pump;
the concentrated hydrochloric acid flowmeter and the dilute hydrochloric acid discharge pump are both electrically connected with the controller;
the concentrated hydrochloric acid flowmeter detects the liquid flow of the concentrated hydrochloric acid discharge pipeline and feeds back a discharge liquid flow signal to the controller;
and the controller controls the on-off of the dilute hydrochloric acid discharge pump according to the discharge liquid flow signal.
Has the beneficial effects that: the liquid flow of the concentrated hydrochloric acid discharge pipeline is detected through the concentrated hydrochloric acid flowmeter, and the dilute hydrochloric acid is controlled to be discharged into the pump to be started and stopped according to the discharged liquid flow signal, so that the liquid amount in the tail gas absorption tank is controlled.
Further, a dilute hydrochloric acid flowmeter is arranged on a liquid circulation pipeline between the dilute hydrochloric acid storage tank and the tail gas absorption tank;
the dilute hydrochloric acid flow meter is electrically connected with the controller;
the dilute hydrochloric acid flowmeter is used for detecting the liquid flow of a liquid circulation pipeline between the dilute hydrochloric acid storage tank and the tail gas absorption tank and feeding back a liquid flow signal discharged into the controller;
and the controller controls the on-off of the dilute hydrochloric acid discharge pump according to the discharge liquid flow signal and the discharge liquid flow signal.
Has the beneficial effects that: and controlling the on-off of the dilute hydrochloric acid discharge pump according to the discharge liquid flow signal and the discharge liquid flow signal, so that the discharge liquid flow and the discharge liquid flow can be accurately controlled.
Further, an absorption tank liquid level meter is also arranged in the tail gas absorption tank;
the absorption tank liquid level meter is electrically connected with the controller;
the absorption tank liquid level meter is used for detecting the height of the liquid level in the tail gas absorption tank and feeding back a liquid level signal of the absorption tank to the controller;
and the controller controls the on-off of the dilute hydrochloric acid discharge pump according to the liquid level signal of the absorption tank.
Has the advantages that: the tail gas absorption tank is internally provided with the absorption tank liquid level meter, and the dilute hydrochloric acid discharge pump is controlled to be opened and closed according to the liquid level signal of the absorption tank, so that liquid in the tail gas tank can be discharged, and when the tail gas absorption treatment needs to be assisted by adding liquid, the aim is fulfilled by controlling the dilute hydrochloric acid discharge pump.
Further, a tap water inlet pipeline of the spray tower is arranged on the spray absorption tower.
Has the beneficial effects that: the liquid in the spray absorption tower is supplied through a tap water inlet pipeline of the spray tower.
Furthermore, the tail gas absorption tank is provided with an absorption tank tap water inlet pipeline.
Has the advantages that: the liquid in the tail gas absorption tank is supplied through a tap water inlet pipeline of the absorption tank.
Further, a storage tank liquid level meter is also arranged in the dilute hydrochloric acid storage tank;
the storage tank liquid level meter is electrically connected with the controller;
the storage tank liquid level meter is used for detecting the height of the liquid level in the dilute hydrochloric acid storage tank and feeding back a storage tank liquid level signal to the controller;
and the controller controls the on-off of the dilute hydrochloric acid discharge pump according to the storage tank liquid level signal.
Has the beneficial effects that: and controlling the dilute hydrochloric acid to be discharged into the pump according to the liquid level height in the dilute hydrochloric acid storage tank.
Further, the device also comprises an alarm device;
the alarm device is electrically connected with the controller;
and the controller controls the on-off of the alarm device according to the liquid level signal of the storage tank.
Has the beneficial effects that: according to the liquid level height in the dilute hydrochloric acid storage tank, the opening and closing of the alarm device are controlled, so that the prompt of the liquid level of the dilute hydrochloric acid storage tank is realized.
Furthermore, an absorption tank water inlet pump is arranged on the absorption tank tap water inlet pipeline;
the absorption tank water inlet pump is electrically connected with the controller;
and the controller controls the on-off of the water inlet pump of the absorption tank according to the storage tank liquid level signal and the discharged liquid flow signal.
Has the beneficial effects that: the liquid in the dilute hydrochloric acid storage tank is the liquid subjected to tail gas absorption treatment in the spray absorption tower, the dilute hydrochloric acid content of the liquid is higher than that of new liquid, the liquid in the dilute hydrochloric acid storage tank is discharged into the tail gas absorption tank to assist the secondary absorption treatment, the concentration of the liquid in the tail gas absorption tank is improved, but when the liquid level of the liquid in the dilute hydrochloric acid storage tank is too low, the liquid requirement for the tail gas absorption tank is not met, and the new liquid needs to be directly added into the tail gas absorption tank. Therefore, in the scheme, the opening and closing of the water inlet pump of the absorption tank are controlled according to the liquid level signal of the storage tank and the flow signal of the discharged liquid, so that new liquid can be provided as required to absorb hydrogen chloride.
Further, the controller controls the opening and closing of the alarm device according to the liquid level signal of the absorption tank.
Has the advantages that: according to the liquid level height in the tail gas absorption tank, the opening and closing of the alarm device are controlled, so that the prompt of the liquid level of the tail gas absorption tank is realized.
Drawings
FIG. 1 is a signal flow diagram of an automatic continuous production system for byproduct hydrochloric acid according to an embodiment of the present invention.
FIG. 2 is a schematic view of a connection structure of an automatic continuous production system for byproduct hydrochloric acid according to an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
the reference numbers in the drawings of the specification include: the device comprises a tail gas absorption tank 1, a falling film absorption tower 2, a spray absorption tower 3, a dilute hydrochloric acid storage tank 4, a controller 5, a liquid injection pump 6, a liquid concentration meter 7, a concentrated hydrochloric acid discharge pump 8, a first pipeline 9, a second pipeline 10, a spray tower tap water inlet pipeline 11, a tail gas exhaust pipeline 12, an absorption tank tap water inlet pipeline 13, a dilute hydrochloric acid discharge pump 14 and a water pumping pipeline 15.
Example 1:
example 1 is substantially as shown in figure 1:
the automatic continuous production system of the byproduct hydrochloric acid comprises a tail gas absorption tank 1, a falling film absorption tower 2, a spray absorption tower 3, a dilute hydrochloric acid storage tank 4, a controller 5 and an alarm device. In this embodiment, the controller 5(JZY-DLKZ, jiangsu zhongyu instrument) is a buzzer, and in other embodiments of the present application, an indicator light may also be used.
A liquid jet pump 6, a liquid concentration meter 7 and an absorption tank liquid level meter are arranged in the tail gas absorption tank 1; the liquid jet pump 6 is used for jetting liquid into the tail gas absorption tank 1, specifically, a through hole is arranged at the bottom of the tail gas absorption tank 1, a water pumping pipeline 15 is communicated between the through hole and the liquid jet pump 6 arranged at the top of the tail gas absorption tank 1, and the water pumping pipeline 15 is used for pumping the liquid in the tail gas absorption tank 1 to the liquid jet pump 6, so that the hydrogen chloride gas contained in the tail gas absorption tank 1 is absorbed through the jetted liquid.
The tail gas absorption tank is characterized in that a concentrated hydrochloric acid discharge pipeline and an absorption tank tap water inlet pipeline 13 are arranged on the tail gas absorption tank 1, and an absorption tank water inlet pump is arranged on the absorption tank tap water inlet pipeline 13. The liquid in the tail gas absorption tank 1 is discharged through a concentrated hydrochloric acid discharge pipeline, and a concentrated hydrochloric acid discharge pump 8 and a concentrated hydrochloric acid flowmeter are arranged on the concentrated hydrochloric acid discharge pipeline; and a liquid circulation pipeline between the dilute hydrochloric acid storage tank 4 and the tail gas absorption tank 1 is provided with a dilute hydrochloric acid discharge pump 14. The liquid enters the system through the tap water inlet pipeline 13 of the absorption tank and the tap water inlet pipeline of the absorption tower arranged on the spray absorption tower 3, in this embodiment, the liquid entering the system is tap water, and the concentration of hydrochloric acid in the tap water gradually increases along with the absorption treatment of the tail gas.
A liquid circulation pipeline is communicated between the tail gas absorption tank 1 and the falling film absorption tower 2; the liquid circulation pipeline is used for realizing the circulation flow of the liquid in the tail gas absorption tank 1 and the falling film absorption tower 2. The liquid circulation pipeline comprises a first pipeline 9 and a second pipeline 10, liquid in the tail gas absorption tank 1 is pumped into the falling film absorption tower 2 through the first pipeline 9, and liquid in the falling film absorption tower 2 flows back to the tail gas absorption tank 1 through the second pipeline 10.
And a spray tower tap water inlet pipeline 11 and a tail gas exhaust pipeline 12 are arranged on the spray absorption tower 3, and the tail gas after absorption treatment is discharged through the tail gas exhaust pipeline 12. And a spray tower water inlet pump is arranged on the spray tower tap water inlet pipeline 11.
A storage tank liquid level meter is arranged in the dilute hydrochloric acid storage tank 4, and a dilute hydrochloric acid flowmeter is further arranged on a liquid circulation pipeline between the dilute hydrochloric acid storage tank 4 and the tail gas absorption tank 1.
Also comprises a tail gas circulation pipeline and a liquid circulation pipeline. The tail gas circulation pipeline is sequentially communicated with a tail gas absorption tank 1, a falling film absorption tower 2 and a spray absorption tower 3; and the tail gas is sequentially absorbed in the tail gas absorption tank 1, the falling film absorption tower 2 and the spray absorption tower 3 through a tail gas circulation pipeline. The liquid circulation pipeline is sequentially communicated with the spray absorption tower 3, the dilute hydrochloric acid storage tank 4 and the tail gas absorption tank 1; and the liquid circulates in the spray absorption tower 3, the dilute hydrochloric acid storage tank 4 and the tail gas absorption tank 1 in sequence through the liquid circulation pipeline.
The concentrated hydrochloric acid discharge pump 8(CQB32-20-110F, suzhou typhoon pump industry), the alarm device (TG-BBJ, hangzhou sky crown technology), the liquid concentration meter 7(XFGX-NDJ500, xiamen male generator instrument), the absorption tank water inlet pump (CQB32-20-110F, suzhou typhoon pump industry), the spray tower water inlet pump (CQB32-20-110F, suzhou typhoon pump industry), the storage tank liquid level meter (JL-UHZ-58, Anhui Jinling automation), the dilute hydrochloric acid flow meter (GK-LDE32, Shanghai Guike instrument), the absorption tank liquid level meter (JL-UHZ-58, Anhui Jinling automation), the dilute hydrochloric acid discharge pump 14(CQB32-20-110F, suzhou typhoon pump industry) and the concentrated hydrochloric acid flow meter (GK-LDE32, Shanghai Guizhou instrument) are all electrically connected to the controller 5.
And the liquid concentration meter 7 is used for detecting the concentration of the liquid in the tail gas absorption tank 1 and feeding back a liquid concentration signal to the controller 5.
The concentrated hydrochloric acid flowmeter detects the liquid flow of the concentrated hydrochloric acid discharge pipeline and feeds back a discharge liquid flow signal to the controller 5.
The dilute hydrochloric acid flowmeter detects the liquid flow of a liquid circulation pipeline between the dilute hydrochloric acid storage tank 4 and the tail gas absorption tank 1, and feeds back a liquid flow signal discharged into the controller 5.
The absorption tank liquid level meter detects the height of the liquid level in the tail gas absorption tank 1 and feeds back a liquid level signal of the absorption tank to the controller 5.
The storage tank liquid level meter detects the height of the liquid level in the dilute hydrochloric acid storage tank 4 and feeds back a storage tank liquid level signal to the controller 5.
And the controller 5 controls the on-off of the concentrated hydrochloric acid discharge pump 8 according to the liquid concentration signal. When the liquid concentration signal shows that the liquid concentration in the tail gas absorption tank 1 is higher than the high concentration threshold value, the controller 5 controls the concentrated hydrochloric acid discharge pump 8 to be started; after the tail gas absorption tank is started, when the liquid concentration signal shows that the liquid concentration in the tail gas absorption tank 1 is lower than the low concentration threshold value, the controller 5 controls the concentrated hydrochloric acid discharge pump 8 to be closed.
And the controller 5 controls the on-off of the dilute hydrochloric acid discharge pump 14 according to the discharge liquid flow signal, the storage tank liquid level signal and the absorption tank liquid level signal. When the liquid level signal of the storage tank shows that the liquid level in the dilute hydrochloric acid storage tank 4 is higher than the low liquid level threshold value, the controller 5 controls the dilute hydrochloric acid discharge pump 14 to be started, and when the discharged liquid flow signal shows that the liquid flow discharged into the tail gas absorption tank 1 is equal to the liquid flow discharged from the tail gas absorption tank 1, the controller 5 controls the dilute hydrochloric acid discharge pump 14 to be closed.
And the controller 5 controls the opening and closing of the alarm device according to the storage tank liquid level signal and the absorption tank liquid level signal. And when the liquid level signal of the storage tank shows that the liquid level in the dilute hydrochloric acid storage tank 4 is lower than or exceeds the liquid level threshold range of the storage tank, or the liquid level signal of the absorption tank shows that the liquid level in the tail gas absorption tank 1 is lower than or exceeds the liquid level threshold range of the absorption tank, the controller 5 and the alarm device 5 of the controller 5 are started. In this embodiment, the controller 5 further controls the on/off of the alarm device according to the liquid concentration signal. And when the liquid concentration signal shows that the liquid concentration in the tail gas absorption tank 1 is higher than the high concentration threshold value, the alarm device of the controller 5 is started.
And the controller 5 controls the on-off of the water inlet pump of the absorption tank according to the storage tank liquid level signal and the discharged liquid flow signal. When discharge liquid flow signal shows that there is liquid to discharge from tail gas absorption tank 1, just when storage tank liquid level signal shows that the liquid level in the dilute hydrochloric acid storage tank 4 is less than low liquid level threshold value, controller 5 control absorption tank intake pump opens, and the liquid level of intaking to in the tail gas absorption tank 1 reaches absorption tank liquid level threshold value.
As shown in fig. 2, the specific working process is as follows:
1. preparation work
Firstly, tap water is added through the tap water inlet pipeline 13 of the absorption tank and the tap water inlet pipeline of the absorption tower respectively to the initial liquid levels of the tail gas absorption tank 1 and the spray absorption tower 3. The tail gas containing hydrogen chloride gas is added into the tail gas absorption tank 1.
2. Tail gas absorption process
The tail gas is firstly sprayed and absorbed by the circulating tap water under the action of the liquid spray pump 6 in the tail gas absorption tank 1, hydrogen chloride gas which is not completely absorbed is subjected to falling film absorption by the circulating tap water in the falling film absorption tower 2, the concentration of hydrochloric acid is further increased, a small amount of hydrogen chloride gas remained in the tail gas enters the spray absorption tower 3 to be sprayed and absorbed, and finally, the tail gas containing trace hydrogen chloride is discharged into a VOC system communicated with the tail gas exhaust pipeline 12 through the tail gas exhaust pipeline 12 to be treated and then discharged after reaching the standard.
3. Collection of dilute hydrochloric acid
The liquid in the spray absorption tower 3 is discharged into a dilute hydrochloric acid storage tank 4 at regular time for temporary storage, and is continuously supplemented into a tail gas absorption tank 1 through a subsequent production process.
4. Automatic, continuous production process
Firstly, starting a tail gas absorption system and then starting a synthesis reaction. Along with the reaction, the generated tail gas is absorbed in time, the hydrochloric acid concentration of tap water in the tail gas absorption tank 1 is continuously improved, and a liquid concentration meter 7 detects the liquid concentration in the tail gas absorption tank 1 in real time.
When liquid concentration in the liquid concentration signal display tail gas absorption tank 1 is higher than the high concentration threshold value, 5 alarm device of controller open, and concentrated hydrochloric acid discharge pump 8 opens, squeezes into the concentrated hydrochloric acid storage tank of tank field with the liquid in the tail gas absorption tank 1 in, simultaneously, the height of liquid level in the absorption tank level gauge detection tail gas absorption tank 1.
When the liquid level signal in the dilute hydrochloric acid storage tank 4 indicates that the liquid level in the dilute hydrochloric acid storage tank 4 is higher than the low liquid level threshold value, the controller 5 controls the dilute hydrochloric acid discharge pump 14 to be started, and the flow of the dilute hydrochloric acid discharge pump is maintained to be equal to the flow of the liquid discharged by the tail gas absorption tank 1. In the process, the liquid level in the dilute hydrochloric acid storage tank 4 continuously drops, and when the liquid level in the storage tank is lower than the liquid level threshold range of the storage tank according to the signal fed back by the liquid level meter of the dilute hydrochloric acid storage tank 4, the controller 5 controls the alarm device to be started. The alarm is relieved through manual noise elimination or the liquid in the spray absorption tower 3 is discharged into the dilute hydrochloric acid storage tank 4 to be in contact with the alarm, the dilute hydrochloric acid discharge pump 14 is closed, meanwhile, the absorption tank water inlet pump is opened, and tap water is pumped into the tail gas absorption tank 1 at the same flow as the concentrated hydrochloric acid discharge pump 8.
The liquid level in the tail gas absorption tank 1 is basically kept constant during the pumping in and out process.
Along with tail gas absorption tank 1 interior liquid by concentrated hydrochloric acid discharge pump 8 beat, liquid or running water in dilute hydrochloric acid storage tank 4 add tail gas absorption tank 1, the hydrochloric acid concentration of liquid reduces gradually in the tail gas absorption tank 1, works as when liquid concentration signal shows that the liquid concentration in the tail gas absorption tank 1 is less than the low concentration threshold value, controller 5 control concentrated hydrochloric acid discharge pump 8 closes, and alarm device opens, and dilute hydrochloric acid discharge pump 14 closes, and the absorption tank intake pump is closed.
The system continues to absorb tail gas, the concentration of hydrochloric acid in the liquid gradually increases, and when the concentration of the liquid in the tail gas absorption tank 1 is higher than a low concentration threshold value, the alarm device is automatically closed.
Hydrogen chloride gas in the tail gas is continuous to be absorbed by the acid water, hydrochloric acid volume in the tail gas absorption tank 1 increases, when the liquid level in the absorption tank liquid level signal shows that tail gas absorption tank 1 is higher than high liquid level threshold value, alarm device opens, concentrated hydrochloric acid discharge pump 8 is opened, squeeze into tank field concentrated hydrochloric acid storage tank with the liquid in the tail gas absorption tank 1, when the liquid level in the absorption tank liquid level signal shows that tail gas absorption tank 1 is less than low liquid level threshold value, concentrated hydrochloric acid discharge pump 8 closes.
The system continuously absorbs the hydrogen chloride in the byproduct tail gas, and the tail gas absorption treatment is continuously executed according to the steps, so that the continuous and automatic hydrochloric acid production process is realized.
The above are merely examples of the present invention, and common general knowledge of known specific structures and characteristics of the embodiments is not described herein, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. The automatic continuous production system of by-product hydrochloric acid, its characterized in that: comprises a tail gas absorption tank, a falling film absorption tower, a spray absorption tower, a dilute hydrochloric acid storage tank and a controller;
a liquid jet pump and a liquid concentration meter are arranged in the tail gas absorption tank, and the liquid concentration meter is electrically connected with the controller; the liquid injection pump is used for injecting liquid into the tail gas absorption tank; the liquid concentration meter is used for detecting the concentration of liquid in the tail gas absorption tank and feeding back a liquid concentration signal to the controller;
a liquid circulation pipeline is communicated between the tail gas absorption tank and the falling film absorption tower; the liquid circulation pipeline is used for realizing the circulation flow of liquid in the tail gas absorption tank and the falling film absorption tower;
the device also comprises a tail gas circulation pipeline and a liquid circulation pipeline;
the tail gas circulation pipeline is sequentially communicated with the tail gas absorption tank, the falling film absorption tower and the spray absorption tower; tail gas is sequentially absorbed in a tail gas absorption tank, a falling film absorption tower and a spray absorption tower through a tail gas circulation pipeline; the spraying absorption tower is provided with a tail gas exhaust pipeline, and the tail gas after absorption treatment is exhausted through the tail gas exhaust pipeline;
the liquid circulation pipeline is sequentially communicated with the spray absorption tower, the dilute hydrochloric acid storage tank and the tail gas absorption tank; the liquid circulates in the spray absorption tower, the dilute hydrochloric acid storage tank and the tail gas absorption tank in sequence through the liquid circulation pipeline;
the tail gas absorption tank is provided with a concentrated hydrochloric acid discharge pipeline, and liquid in the tail gas absorption tank is discharged through the concentrated hydrochloric acid discharge pipeline; a concentrated hydrochloric acid discharge pump is arranged on the concentrated hydrochloric acid discharge pipeline; the concentrated hydrochloric acid discharge pump is electrically connected with the controller;
and the controller controls the on-off of the concentrated hydrochloric acid discharge pump according to the liquid concentration signal.
2. The automatic continuous production system of by-produced hydrochloric acid according to claim 1, characterized in that: a concentrated hydrochloric acid flow meter is also arranged on the concentrated hydrochloric acid discharge pipeline; a dilute hydrochloric acid discharge pump is arranged on a liquid circulation pipeline between the dilute hydrochloric acid storage tank and the tail gas absorption tank;
the concentrated hydrochloric acid flowmeter and the dilute hydrochloric acid discharge pump are both electrically connected with the controller;
the concentrated hydrochloric acid flowmeter detects the liquid flow of the concentrated hydrochloric acid discharge pipeline and feeds back a discharge liquid flow signal to the controller;
and the controller controls the on-off of the dilute hydrochloric acid discharge pump according to the discharge liquid flow signal.
3. The automatic continuous production system of by-produced hydrochloric acid according to claim 2, characterized in that: a dilute hydrochloric acid flowmeter is also arranged on a liquid circulation pipeline between the dilute hydrochloric acid storage tank and the tail gas absorption tank;
the dilute hydrochloric acid flow meter is electrically connected with the controller;
the dilute hydrochloric acid flowmeter detects the liquid flow of a liquid circulation pipeline between the dilute hydrochloric acid storage tank and the tail gas absorption tank, and feeds back a liquid flow signal discharged into the controller;
and the controller controls the on-off of the dilute hydrochloric acid discharge pump according to the discharge liquid flow signal and the discharge liquid flow signal.
4. The automatic continuous production system of by-produced hydrochloric acid according to claim 3, characterized in that: an absorption tank liquid level meter is also arranged in the tail gas absorption tank;
the absorption tank liquid level meter is electrically connected with the controller;
the absorption tank liquid level meter is used for detecting the height of the liquid level in the tail gas absorption tank and feeding back a liquid level signal of the absorption tank to the controller;
and the controller controls the on-off of the dilute hydrochloric acid discharge pump according to the liquid level signal of the absorption tank.
5. The automatic continuous production system of by-produced hydrochloric acid according to claim 4, characterized in that: and a tap water inlet pipeline of the spray tower is arranged on the spray absorption tower.
6. The system for automatic continuous production of by-product hydrochloric acid as claimed in claim 5, wherein: and a tap water inlet pipeline of the absorption tank is arranged on the tail gas absorption tank.
7. The system for automatic continuous production of by-product hydrochloric acid as claimed in claim 6, wherein: a storage tank liquid level meter is also arranged in the dilute hydrochloric acid storage tank;
the storage tank liquid level meter is electrically connected with the controller;
the storage tank liquid level meter is used for detecting the height of the liquid level in the dilute hydrochloric acid storage tank and feeding back a storage tank liquid level signal to the controller;
and the controller controls the on-off of the dilute hydrochloric acid discharge pump according to the storage tank liquid level signal.
8. The automatic continuous production system of by-produced hydrochloric acid according to claim 7, characterized in that: the device also comprises an alarm device;
the alarm device is electrically connected with the controller;
and the controller controls the on-off of the alarm device according to the storage tank liquid level signal.
9. The automatic continuous production system of by-produced hydrochloric acid according to claim 8, characterized in that: an absorption tank water inlet pump is arranged on the absorption tank tap water inlet pipeline;
the absorption tank water inlet pump is electrically connected with the controller;
and the controller controls the on-off of the water inlet pump of the absorption tank according to the storage tank liquid level signal and the discharged liquid flow signal.
10. The system for automatic continuous production of by-product hydrochloric acid as claimed in claim 9, wherein: and the controller controls the opening and closing of the alarm device according to the liquid level signal of the absorption tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220419759.3U CN217041973U (en) | 2022-02-28 | 2022-02-28 | Automatic continuous production system of by-product hydrochloric acid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220419759.3U CN217041973U (en) | 2022-02-28 | 2022-02-28 | Automatic continuous production system of by-product hydrochloric acid |
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| CN217041973U true CN217041973U (en) | 2022-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232645A (en) * | 2022-08-17 | 2022-10-25 | 山东沾化阳光化学有限公司 | Refining process and equipment for recovering hydrochloric acid in chlorinated paraffin production process |
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2022
- 2022-02-28 CN CN202220419759.3U patent/CN217041973U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232645A (en) * | 2022-08-17 | 2022-10-25 | 山东沾化阳光化学有限公司 | Refining process and equipment for recovering hydrochloric acid in chlorinated paraffin production process |
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