Waste chlorine gas absorption device in industrial production

Abstract

The utility model relates to a waste chlorine absorption device in industrial production, which comprises a primary alkali liquor absorption tower, a standby alkali liquor absorption tower, a primary alkali preparation circulating tank, a standby alkali preparation circulating tank, an alkali liquor storage tank, a tap water storage tank and a sodium hypochlorite finished product storage tank, the alkali liquor storage tank and the tap water storage tank are connected with the primary alkali preparation circulating tank and the standby alkali preparation circulating tank. Compared with the prior art, the two alkali liquor absorption towers capable of circularly absorbing the waste chlorine gas respectively fill the blank of shutdown when a single alkali circulation tank pumps finished sodium hypochlorite into the sodium hypochlorite finished product storage tank, and ensure that the waste chlorine gas is always in a stable absorption state; in addition, accurate alkali liquor proportioning is adopted, so that accurate and controllable sodium hypochlorite components of an absorbed finished product can be ensured; the device is provided with the alkali liquor elevated tank, and when the system is powered off, alkali liquor in the tank flows into the top of the absorption tower to absorb accident chlorine and prevent chlorine leakage.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial waste chlorine absorption purification technical field, especially in industrial production waste chlorine absorption device. BACKGROUND

[0002] Chlorine is a commonly used substance in chemical industry production, however, in the process of on-site production and processing, due to the abnormal situation of cl2 device maintenance, start and stop and sudden power failure, the overflow of chlorine will occur in the treatment of cl2, in addition, the waste cl2 caused by liquefied tail gas and PVC production is one aspect, therefore, the remaining chlorine needs to be treated. CONTENT

[0003] In view of the above defects in the prior art, the utility model provides a kind of industrial production waste chlorine absorption device as follows:

[0004] The technical scheme of the utility model is as follows:

[0005] A kind of industrial production waste chlorine absorption device, including primary lye absorption tower, spare lye absorption tower, primary alkali preparation circulating tank, spare alkali preparation circulating tank, lye storage tank, tap water storage tank and secondary sodium finished product storage tank, the primary lye absorption tower, spare lye absorption tower are all provided with waste chlorine inlet and gas outlet, the lye storage tank and tap water storage tank are all connected primary alkali preparation circulating tank, spare alkali preparation circulating tank, the secondary sodium inlet of primary alkali preparation circulating tank is connected with the secondary sodium outlet of primary lye absorption tower, the lye outlet of primary alkali preparation circulating tank is connected with the upper spray of primary lye absorption tower and secondary sodium finished product storage tank respectively, the secondary sodium inlet of spare alkali preparation circulating tank is connected with the secondary sodium outlet of spare lye absorption tower, the lye outlet of spare alkali preparation circulating tank is connected with the upper spray of spare lye absorption tower and secondary sodium finished product storage tank respectively, the gas outlet of primary lye absorption tower is connected with the waste chlorine inlet of spare lye absorption tower.

[0006] Preferably, the device is also provided with lye head tank, the lye head tank is connected with the lye outlet of primary alkali preparation circulating tank, and the lye outlet of the lye head tank is connected with the upper part of primary lye absorption tower.

[0007] Preferably, the lye outlet of primary alkali preparation circulating tank and the spray arranged on the upper part of primary lye absorption tower are connected with a pipeline, and a circulating cooler is arranged on the pipeline.

[0008] Preferably, the gas outlet of spare lye absorption tower is provided with a sea breeze fan.

[0009] Preferably, the primary lye absorption tower waste chlorine gas inlet is arranged at the tower bottom and connected with a gas distribution platform, the secondary sodium outlet of the primary lye absorption tower and the standby lye absorption tower are arranged at the tower bottom, and the gas outlet of the primary lye absorption tower and the standby lye absorption tower is arranged at the tower top; the secondary sodium inlet of the primary lye circulation tank and the standby lye circulation tank is arranged at the tank top, and the lye outlet of the primary lye circulation tank and the standby lye circulation tank is arranged at the tank bottom.

[0010] Compared with the prior art, the industrial production waste chlorine gas absorption device has the following beneficial effects:

[0011] The industrial production waste chlorine gas absorption device of the utility model, through two can each cyclic absorption waste chlorine gas's lye absorption tower, fill up single alkali circulation tank to the secondary sodium finished product storage tank when the finished product secondary sodium is punched into, the blank of shutdown, guarantee waste chlorine gas is in the state of stable absorption all the time, in addition, the utility model discloses adopt accurate lye proportioning, can guarantee the composition of the finished product secondary sodium after absorption is accurate and controllable, the lye head tank is arranged in the device, when the system is powered off, the lye in the tank flows into the top of the absorption tower, absorbs the accident chlorine gas, prevents the chlorine gas from running. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic diagram of the industrial production waste chlorine gas absorption device of the utility model.

[0013] In the drawing: primary lye absorption tower 1, standby lye absorption tower 2, primary lye circulation tank 3, standby lye circulation tank 4, lye storage tank 5, tap water storage tank 6, secondary sodium finished product storage tank 7, sprayer 8, lye head tank 9, circulating cooler 10. DETAILED DESCRIPTION

[0014] The utility model will be described clearly and completely in combination with the drawings in the embodiment of the utility model.

[0015] As Figure 1As shown, an industrial waste chlorine absorption device, including a primary lye absorption tower 1, a standby lye absorption tower 2, a primary lye preparation circulating tank 3, a standby lye preparation circulating tank 4, a lye storage tank 5, a tap water storage tank 6, and a secondary sodium product storage tank 7, the primary lye absorption tower 1 and the standby lye absorption tower 2 are both provided with a waste chlorine gas inlet and a gas outlet, the lye storage tank 5 and the tap water storage tank 6 are both connected to the primary lye preparation circulating tank 3 and the standby lye preparation circulating tank 4, the lye storage tank 5 and the tap water storage tank 6 will be proportionally prepared lye by the respective delivery pump into the primary lye preparation circulating tank 3 and the standby lye preparation circulating tank 4, the secondary sodium inlet of the primary lye preparation circulating tank 3 is connected to the secondary sodium outlet of the primary lye absorption tower 1, the lye outlet of the primary lye preparation circulating tank 3 is connected to the sprayer 8 arranged on the upper part of the primary lye absorption tower 1 and the secondary sodium product storage tank 7, respectively, the lye outlet of the primary lye preparation circulating tank 3 is provided with an absorption tower circulating pump, the primary lye preparation circulating tank 3, the absorption tower circulating pump and the primary lye absorption tower 1 constitute a lye circulating spray system, the secondary sodium inlet of the standby lye preparation circulating tank 4 is connected to the secondary sodium outlet of the standby lye absorption tower 2, the lye outlet of the standby lye preparation circulating tank 4 is connected to the sprayer 8 arranged on the upper part of the standby lye absorption tower 2 and the secondary sodium product storage tank 7, respectively, the lye outlet of the standby lye preparation circulating tank 4 is provided with an absorption tower circulating pump, the standby lye preparation circulating tank 4, the absorption tower circulating pump and the standby lye absorption tower 2 constitute another lye circulating spray system, the gas outlet of the primary lye absorption tower 1 is connected to the waste chlorine gas inlet of the standby lye absorption tower 2, when the primary lye absorption tower 1 stops working, the waste chlorine gas in the primary lye absorption tower 1 enters the standby lye absorption tower 2 for circulating spray.

[0016] The absorption device is also provided with a lye high tank 9, the lye high tank 9 is connected to the lye outlet of the primary lye preparation circulating tank 3, the primary lye preparation circulating tank 3 can spray the lye to be sprayed into the lye high tank 9 for standby when the system is powered off, etc., the lye outlet of the lye high tank 9 is connected to the upper part of the primary lye absorption tower 1, after the valve is opened, the lye in the lye high tank 9 can flow into the primary lye absorption tower 1.

[0017] The pipeline connected between the lye outlet of the primary lye preparation circulating tank 3 and the sprayer 8 arranged on the upper part of the primary lye absorption tower 1 is provided with a circulating cooler 10, the pipeline connected between the lye outlet of the standby lye preparation circulating tank 4 and the sprayer 8 arranged on the upper part of the standby lye absorption tower 2 is provided with a circulating cooler 10, in the process of spraying secondary sodium, a large amount of heat generated by the reaction is brought out to the lye preparation circulating tank by the lye, then the high-temperature lye is cooled by the circulating cooler 10 by cooling water, and the lye is recirculated and sprayed.

[0018] The gas outlet of the standby lye absorption tower 2 is provided with a high-power fan, the large suction of the high-power fan can exhaust the tail gas after spraying into the atmosphere.

[0019] The waste chlorine gas inlet of the primary alkali liquor absorption tower 1 is arranged at the bottom of the tower and is connected with a gas distribution platform, the secondary sodium outlet of the primary alkali liquor absorption tower 1 and the standby alkali liquor absorption tower 2 are arranged at the bottom of the tower, and the gas outlet of the primary alkali liquor absorption tower 1 and the standby alkali liquor absorption tower 2 are arranged at the top of the tower; the secondary sodium inlet of the primary alkali liquor circulation tank 3 and the standby alkali liquor circulation tank 4 are arranged at the top of the tank, and the alkali liquor outlet of the primary alkali liquor circulation tank 3 and the standby alkali liquor circulation tank 4 are arranged at the bottom of the tank.

[0020] Working process:

[0021] If the waste Cl2 caused by liquefied tail gas or PVC production needs to enter the distribution platform and then enters the waste chlorine gas inlet of the primary alkali liquor absorption tower 1, if the accident chlorine gas from electrolysis can directly enter the waste chlorine gas inlet of the primary alkali liquor absorption tower 1, all the waste chlorine gas is in countercurrent contact with the alkali liquor sprayed from the top of the tower, and secondary sodium is generated by reaction, the heat generated by the reaction is taken out by the alkali liquor to the primary alkali liquor circulation tank 3, is taken away by the cooling water through the circulating cooler 10, and the alkali liquor is recycled and sprayed; when the analysis alkali content is less than 1%-3%, it is punched to the secondary sodium finished product storage tank 7, and another alkali liquor circulation spraying system is started at the same time; the chlorine gas not absorbed in the primary alkali liquor absorption tower 1 is absorbed by the standby alkali liquor absorption tower 2 to generate secondary sodium, and the gas that cannot be absorbed is discharged from the top of the tower and is discharged into the atmosphere by the high-voltage fan, 32% alkali liquor and fresh water are mixed to form 15%-18% dilute alkali, and the heat generated during the configuration process is also taken away by the circulating cooler 10; when the secondary sodium in the primary alkali liquor circulation tank 3 or the standby alkali liquor circulation tank 4 is qualified, the tank is reversed, the finished product secondary sodium is punched into the secondary sodium finished product storage tank 7, and the alkali liquor in the alkali liquor high tank 9 is used as standby alkali liquor and flows into the top of the absorption tower when the system is powered off to absorb the accident chlorine gas and prevent chlorine gas from running.

[0022] According to the structure and working process of the utility model, the waste chlorine gas absorption device in industrial production of the utility model fills in the blank of stopping work when the single alkali circulation tank punches the finished product secondary sodium into the secondary sodium finished product storage tank, ensures that the waste chlorine gas is always in a stable absorption state, and the utility model adopts precise alkali liquor proportioning, can ensure that the composition of the finished product secondary sodium after absorption is precisely controllable, and the alkali liquor high tank is arranged in the device, the alkali liquor in the tank flows into the top of the absorption tower when the system is powered off, absorbs the accident chlorine gas, and prevents chlorine gas from running.

Claims

1. An apparatus for absorbing waste chlorine gas in industrial production, characterized in that, The device comprises a primary lye absorption tower, a standby lye absorption tower, a primary lye mixing circulating tank, a standby lye mixing circulating tank, a lye storage tank, a tap water storage tank, and a secondary sodium product storage tank, the primary lye absorption tower and the standby lye absorption tower are both provided with a waste chlorine gas inlet and a gas outlet, the lye storage tank and the tap water storage tank are both connected to the primary lye mixing circulating tank and the standby lye mixing circulating tank, the secondary sodium inlet of the primary lye mixing circulating tank is connected to the secondary sodium outlet of the primary lye absorption tower, the lye outlet of the primary lye mixing circulating tank is connected to the sprayer arranged on the upper part of the primary lye absorption tower and the secondary sodium product storage tank, the secondary sodium inlet of the standby lye mixing circulating tank is connected to the secondary sodium outlet of the standby lye absorption tower, the lye outlet of the standby lye mixing circulating tank is connected to the sprayer arranged on the upper part of the standby lye absorption tower and the secondary sodium product storage tank, and the gas outlet of the primary lye absorption tower is connected to the waste chlorine gas inlet of the standby lye absorption tower.

2. The waste chlorine gas absorption apparatus in industrial production according to claim 1, characterized in that, The device is further provided with a lye high tank, the lye high tank is connected to the lye outlet of the primary lye mixing circulating tank, and the lye outlet of the lye high tank is connected to the upper part of the primary lye absorption tower.

3. The waste chlorine gas absorption apparatus in industrial production according to claim 1, characterized in that, A circulating cooler is arranged on the pipeline connected between the lye outlet of the primary lye mixing circulating tank and the sprayer arranged on the upper part of the primary lye absorption tower, and a circulating cooler is arranged on the pipeline connected between the lye outlet of the standby lye mixing circulating tank and the sprayer arranged on the upper part of the standby lye absorption tower.

4. The waste chlorine gas absorption apparatus in industrial production according to claim 1 or 2 or 3, characterized in that, The gas outlet of the standby lye absorption tower is provided with a high-voltage fan.

5. The waste chlorine gas absorption apparatus in industrial production according to claim 1 or 2 or 3, characterized in that, The waste chlorine gas inlet of the primary lye absorption tower is arranged at the bottom of the tower and is connected with a gas distribution table, the secondary sodium outlets of the primary lye absorption tower and the standby lye absorption tower are both arranged at the bottom of the tower, and the gas outlets of the primary lye absorption tower and the standby lye absorption tower are both arranged at the top of the tower, the secondary sodium inlets of the primary lye mixing circulating tank and the standby lye mixing circulating tank are both arranged at the top of the tank, and the lye outlets of the primary lye mixing circulating tank and the standby lye mixing circulating tank are both arranged at the bottom of the tank.

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