Still kettle for autoclaving aerated concrete blocks

Abstract

The utility model relates to a still kettle, in particular to a still kettle for autoclaving aerated concrete blocks. The still kettle comprises a steam pouring pipe, the steam pouring pipe is respectively communicated with a plurality of still kettle bodies, and a steam inlet and a steam discharge pipe are arranged on the steam pouring pipe; and the steam discharge pipe is connected with a scrubber tower. According to the still kettle, steam can be poured through the steam pouring pipe, so that the steam can be recycled, and the energy consumption is reduced. Steam can be cleaned through the scrubbing tower, alkaline substances in the steam are dissolved in scrubbing liquid, the temperature can be reduced through cleaning, and the solubility of the alkaline substances can be improved; the discharge amount of alkaline substances can be effectively reduced through cleaning, the alkaline taste in discharged gas is reduced, and the discharged gas is not prone to polluting the surrounding environment. The problem that the environment is easily polluted due to the fact that alkaline substances carried in steam are accumulated after the steam is repeatedly utilized by an existing steam pouring device is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steam pressure still, concretely relates to a steam pressure still of autoclaved aerated concrete block. BACKGROUND

[0002] Autoclaved aerated concrete block is with quicklime, sand, cement, fly ash and other raw materials, through batching, static, demolding, cutting, shaping and autoclaving process generation. Autoclaving is through steam to the blank steaming. In order to reduce steam consumption, often through the way of steam, steam multiple, repeated use. For example, the patent application of a kind of autoclaved aerated concrete block steam pressure still steam discharge device disclosed in the announcement No. CN205766765U, it is by four steam pressure still, steam compressor and four control valves are formed;First steam pressure still as steam discharge autoclaving still, its steam discharge port is connected with the steam discharge port of the second steam pressure still and the third steam pressure still to be discharged through control valve, by the steam pressure difference between two steam pressure stills to implement steam discharge. The fourth steam pressure still is also the steam discharge autoclaving still between the first steam pressure still, and the steam discharge between the first steam pressure still is implemented by the suction of steam compressor;After implementing multiple steam discharge and steam compression suction steam discharge, the residual pressure steam in the free space of the first steam pressure still can be recovered together with the secondary steam generated by flashing, the "zero emission" of the steam discharge autoclaving still is implemented, and the purpose of high efficiency and energy saving is achieved. This steam discharge device can be used in autoclaved aerated concrete block production line.

[0003] Although the above-mentioned steam discharge device can repeatedly use steam and save energy, alkaline substances (mainly calcium hydroxide particles) will be volatilized during the steaming process of the blank by steam, and the more the number of repeated use of steam, the more alkaline substances carried in the steam. When the steam after multiple use is discharged, a very strong alkaline smell will spread in the air, which will cause environmental pollution. Therefore, it is necessary to design a steam pressure still of autoclaved aerated concrete block to solve the above problems. SUMMARY

[0004] The utility model discloses a kind of steam pressure still of autoclaved aerated concrete block, which can discharge steam, repeatedly use steam, and remove alkaline substances in discharged steam, reduce environmental pollution.

[0005] The technical scheme of the utility model is as follows:

[0006] A steam pressure still of autoclaved aerated concrete block, which is composed of multiple steam pressure still bodies, steam discharge pipes and gas washing towers. The steam discharge pipes are connected with the multiple steam pressure still bodies, and steam inlets and steam discharge pipes are arranged on the steam discharge pipes. The steam discharge pipes pass through the top of the tower body and extend into the gas washing liquid in the lower part of the tower body.

[0007] The upper part of the tower body is provided with a water removal layer.

[0008] The middle part of the tower body is connected with a circulating pump, the outlet of the circulating pump is connected with a spraying pipe, the end of the spraying pipe extends to the inside of the tower body below the water removal layer, and the end of the spraying pipe extending to the inside of the tower body below the water removal layer is connected with a plurality of spray heads.

[0009] The spraying pipe is connected with a liquid supplementing port.

[0010] The inside of the tower body above the water removal layer is provided with an adsorption layer.

[0011] The tower body is wrapped with a jacket, the top of the jacket is provided with a liquid inlet, and the bottom of the jacket is provided with a liquid outlet.

[0012] The beneficial effects of the present application are as follows:

[0013] The autoclave of the autoclaved aerated concrete block can reverse steam through the steam reversing pipe, thereby realizing steam recycling and reducing energy consumption. The steam can be cleaned through the gas washing tower, the alkaline substances in the steam are dissolved in the gas washing liquid, the temperature can be reduced through cleaning, and the solubility of the alkaline substances can be increased; the discharge amount of the alkaline substances can be effectively reduced through cleaning, the alkaline smell in the discharged gas can be reduced, and the discharged gas is not easy to pollute the surrounding environment. The problem that the alkaline substances in the steam are accumulated after the steam is used multiple times by the existing steam reversing device, thereby easily polluting the environment, is solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the present application;

[0015] Figure 2 is a structural schematic view of the gas washing tower of the present application.

[0016] In the figure: 1, autoclave body, 2, steam reversing pipe, 3, steam inlet, 4, steam discharge pipe, 5, tower body, 6, gas washing liquid, 7, exhaust port, 8, discharge port, 9, water removal layer, 10, circulating pump, 11, spraying pipe, 12, spray head, 13, liquid supplementing port, 14, adsorption layer, 15, jacket, 16, liquid inlet, 17, liquid outlet. DETAILED DESCRIPTION

[0017] The autoclave of the autoclaved aerated concrete block is composed of a plurality of autoclave bodies 1, steam discharge pipes 2 and a gas washing tower. The steam discharge pipes 2 are communicated with the plurality of autoclave bodies 1 respectively to discharge steam between the autoclave bodies 1, introduce steam from the autoclave bodies 1 after autoclaving into the autoclave bodies 1 to be autoclaved, thereby repeatedly using the steam, reducing the consumption of steam and saving energy. The steam discharge pipes 2 are provided with steam inlets 3 and steam discharge pipes 4 to supplement steam into the autoclave bodies 1 through the steam inlets 3 and discharge the steam after multiple uses and the residual steam in the autoclave bodies 1 through the steam discharge pipes 4. The steam discharge pipes 4 are connected with the gas washing tower to wash the steam discharged from the steam discharge pipes 4 through the gas washing tower, effectively reduce the alkaline substances carried in the steam, greatly reduce the alkaline substances in the exhaust gas, effectively reduce the alkaline taste in the exhaust gas and greatly reduce the pollution to the environment.

[0018] The gas washing tower is composed of a tower body 5 and gas washing liquid 6 (water or acid) filled in the tower body 5. The tower body 5 is provided with a gas outlet 7 at the top and a discharge port 8 at the bottom. The steam discharge pipes 4 extend through the top of the tower body 5 into the gas washing liquid 6 in the lower part of the tower body 5. The gas washing liquid 6 reacts with or dissolves the alkaline substances, thereby absorbing the alkaline substances in the steam, retaining the alkaline substances in the gas washing liquid 6, washing the steam, preventing the alkaline substances carried in the steam from being discharged from the tower body 5 and greatly reducing the emission of the alkaline substances. The gas outlet 7 discharges the residual gas after washing. The discharge port 8 discharges the gas washing liquid 6 after washing, discharges the precipitated or dissolved alkaline substances by discharging the gas washing liquid 6, thereby reducing the content of the alkaline substances in the gas washing liquid 6 after supplementing the gas washing liquid 6, improving the dissolution or reaction capacity of the gas washing liquid 6 to the alkaline substances and ensuring the absorption of the alkaline substances.

[0019] A water removal layer 9 is arranged in the upper part of the tower body 5. The water removal layer 9 is filled with fillers to remove the gas washing liquid 6 carried in the gas and reduce the loss of the gas washing liquid 6.

[0020] A circulating pump 10 is connected to the middle part of the tower body 5. The outlet of the circulating pump 10 is connected with a spray pipe 11. The end of the spray pipe 11 extends into the tower body 5 below the water removal layer 9 through the top of the tower body 5. A plurality of nozzles 12 are connected to the end of the spray pipe 11 extending into the tower body 5 below the water removal layer 9. The circulating pump 10 sprays the gas washing liquid 6 in the tower body 5, increases the contact area of the gas washing liquid and the gas by spraying and ensures the dissolution of the gas washing liquid 6 to the alkaline substances. At the same time, the spraying cools the gas washing liquid 6, effectively increases the solubility of the gas washing liquid 6 to the alkaline substances and further increases the dissolution of the gas washing liquid 6 to the alkaline substances.

[0021] The spray pipe 11 is connected with a liquid supplementing port 13, so as to supplement the washing liquid 6 into the tower body 5 through the liquid supplementing port 13.

[0022] An adsorption layer 14 (such as activated carbon) is arranged above the water removal layer 9 in the tower body 5, so as to adsorb the alkaline substances and the washing liquid in the exhaust gas through the adsorption layer 14, further purify the exhaust gas, and ensure that the exhaust gas is not easy to pollute the environment.

[0023] The tower body 5 is wrapped with a jacket 15, the top of the jacket 15 is provided with a liquid inlet port 16, and the bottom of the jacket 15 is provided with a liquid outlet port 17. The jacket 15 absorbs the heat in the tower body 5 through the cooling water circulating in the jacket 15, reduces the temperature of the washing liquid 6, increases the solubility of the washing liquid 6 to the alkaline substances, thereby reducing the consumption of the washing liquid 6 and saving the cost; at the same time, the water in the jacket 15 is heated through the absorption of heat, so as to recycle the heat energy.

[0024] When the autoclave for autoclaved aerated concrete blocks works, after the autoclaving is completed, the valve on the autoclaved autoclave body 1 and the valve on the autoclave body 1 to be autoclaved are opened, the steam is introduced into the autoclave body 1 to be autoclaved, and the steam is poured. After the pouring of the steam is completed, the circulating pump 10 is opened, and the washing liquid circulates in the tower body 5 through the circulating pump 10, the spray pipe 11 and the spray head 12. After the washing liquid 6 starts to circulate, the valve on the steam discharge pipe 4 is opened, the residual steam in the autoclaved autoclave body 1 is introduced into the tower body 5 of the washing tower, the steam is discharged from the bottom port of the steam discharge pipe 4, enters the washing liquid 6, is washed by the washing liquid 6, and then is washed by the washing liquid 6 again. The gas washed by the washing liquid 6 is sequentially removed from the exhaust port 7 through the water removal layer 9 and the adsorption layer 14.

[0025] The autoclave for autoclaved aerated concrete blocks can pour the steam through the steam pouring pipe, thereby recycling the steam and reducing the energy consumption. The steam can be cleaned through the washing tower, the alkaline substances in the steam are dissolved in the washing liquid, the temperature is reduced through the cleaning, the solubility of the alkaline substances is increased, the discharge amount of the alkaline substances is effectively reduced through the cleaning, the alkaline smell in the exhaust gas is reduced, and the exhaust gas is not easy to pollute the surrounding environment. The problem that the alkaline substances carried in the steam accumulate after the steam is used multiple times by the existing steam pouring device, and the environment is easily polluted is solved.

Claims

1. Autoclave for autoclaved aerated concrete blocks, consisting of a plurality of autoclave bodies (1), a steam discharge pipe (2) and a gas washing tower, the steam discharge pipe (2) being in communication with the plurality of autoclave bodies (1) respectively, the steam discharge pipe (2) being provided with a steam inlet (3) and a steam discharge pipe (4); characterized in that: The steam exhaust pipe (4) is connected with a gas washing tower, the gas washing tower comprises a tower body (5) and gas washing liquid (6) filled in the tower body (5), the top of the tower body (5) is provided with an exhaust port (7), the bottom of the tower body (5) is provided with a discharge port (8), and the steam exhaust pipe (4) extends through the top of the tower body (5) into the gas washing liquid (6) in the middle and lower parts of the tower body (5).

2. The autoclave for autoclaved aerated concrete blocks according to claim 1, characterized in that: The upper part of the tower body (5) is provided with a water removal layer (9).

3. An autoclave for autoclaved aerated concrete blocks according to claim 2, characterized in that: The middle part of the tower body (5) is connected with a circulating pump (10), the outlet of the circulating pump (10) is connected with a spray pipe (11), the end of the spray pipe (11) extends through the top of the tower body (5) into the tower body (5) below the water removal layer (9), the end of the spray pipe (11) extending into the tower body (5) below the water removal layer (9) is connected with a plurality of spray heads (12).

4. An autoclave for autoclaved aerated concrete blocks according to claim 3, characterized in that: The spray pipe (11) is connected with a liquid supplementing port (13).

5. An autoclave for autoclaved aerated concrete blocks according to claim 3, characterized in that: The tower body (5) above the water removal layer (9) is provided with an adsorption layer (14).

6. An autoclave for autoclaved aerated concrete blocks according to claim 1, characterized in that: The tower body (5) is wrapped with a jacket (15), the top of the jacket (15) is provided with a liquid inlet (16), and the bottom of the jacket (15) is provided with a liquid outlet (17).

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