Efficient furnace gas washing tower for calcining furnace tail gas

Abstract

The utility model discloses an efficient furnace gas washing tower for calcining furnace tail gas. The efficient furnace gas washing tower comprises a gas inlet assembly, a conical barrel, filler and a gas distributor, a conical barrel is welded in the middle of the washing tower body and divides the washing tower body into two sections of towers, namely an upper section of tower and a lower section of tower, which are small in upper part and large in lower part; the gas inlet assembly is arranged on the lower section tower, an upper layer of filler and a lower layer of filler are arranged in the upper section tower, the upper layer of filler and the lower layer of filler are respectively fixed through a filler supporting base and a filler supporting seat, and gas distributors are respectively arranged above the two filler supporting seats; a washing liquid inlet is formed in the upper part of the inner cavity of the washing tower body and is communicated with a water conveying pipe, and one end of the water conveying pipe extends to the upper part of the gas distributor in the washing tower body. According to the utility model, the filler and the gas distributor are combined for use, so that the rising gas sequentially passes through the filler and the gas distributor and can be in full contact with the falling washing liquid, and the washing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of calcining furnace tail gas washing and purification, in particular to a high-efficiency furnace gas washing tower for calcining furnace tail gas. Background Art

[0002] Heavy soda ash is commonly known as heavy ash, and light soda ash is commonly known as light ash. The chemical composition of light ash and heavy ash is Na2CO3. The main difference between the two is the particle size and bulk density. Light ash is powdery, and heavy ash is granular. The bulk density of light ash is 600Kg / m 3 , the bulk density of heavy ash is 900~1200Kg / m 3 .

[0003] Calcination is the main process of soda ash manufacturing and the core equipment in the calcining furnace process. It is a thermal equipment that heat treats carbon raw materials (such as coke, anthracite, etc.) at high temperatures to improve the performance of raw materials. It is used for ironmaking, recovery of rare metals, catalyst production, environmental improvement, and production of special chemicals. A large amount of 400℃ high-temperature tail gas will be generated during the calcination process, which inevitably carries a large amount of alkali dust and ammonia. After dust removal, there is still a small amount of alkali dust and ammonia that needs to be removed by the furnace gas scrubber.

[0004] In the use of existing furnace gas washing towers, since the furnace gas needs to be washed with water, a common method is to wash the furnace gas with water and then filter it. In this way, the water quickly becomes saturated with washing, and the water needs to be updated in time, which causes a waste of water resources, poor gas-liquid contact, slow efficiency, and poor washing effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a high-efficiency furnace gas washing tower for calcining furnace tail gas, which solves the problems raised in the background technology, makes gas-liquid contact fully, and improves the washing efficiency.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A high-efficiency gas washing tower for tail gas from a calcining furnace comprises a washing tower body, and is characterized in that it also comprises an air intake assembly, a conical cylinder, fillers and a gas distributor; a conical cylinder is welded in the middle of the washing tower body, and the washing tower body is divided into two sections, an upper section tower and a lower section tower, by the conical cylinder; the air intake assembly is arranged in the lower section tower, and an upper and a lower layer of fillers are arranged in the upper section tower, and the upper and lower layers of fillers are respectively fixed by a filler support base and a filler support seat, and gas distributors are respectively arranged above the two filler support seats; a washing liquid inlet is arranged above the inner cavity of the washing tower body, and the washing liquid inlet is connected to a water pipe, and one end of the water pipe extends to above the gas distributor in the washing tower body.

[0008] Furthermore, the air intake assembly is a steady-flow gas device composed of uniform partitions.

[0009] The utility model has the following beneficial effects:

[0010] (1) When the utility model allows the furnace gas to flow steadily into the washing tower body through the air intake component 2, the furnace gas rises upward and can be filtered by the filler 7 when passing through the filler. Some impurities will remain in the filler. The clean washing liquid through the washing liquid inlet 5 is sprayed into the filler to facilitate the removal of impurities. The dirty washing liquid after cleaning falls into the washing tower body and is discharged from the washing liquid outlet system. The gas-liquid contact is sufficient and the washing effect is high.

[0011] (2) The utility model uses the packing 7 and the gas distributor 2 in combination, so that the rising gas can fully contact with the descending washing liquid through the packing and the gas distributor in turn, thereby increasing the washing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a high-efficiency gas washing tower for calcining furnace tail gas of the utility model;

[0013] Explanation of the accompanying drawings: washing tower body 1, air inlet assembly 2, air outlet 3, conical cylinder 4, washing liquid inlet 5, washing liquid outlet 6, filler 7, filler support base 7-1, filler support seat 7-2, gas distributor 8, manhole 9, emptying hole 10, liquid level meter 11. DETAILED DESCRIPTION

[0014] The utility model is described in detail below in conjunction with the accompanying drawings.

[0015] like Figure 1 As shown, the utility model is a high-efficiency gas washing tower for calcining furnace tail gas, the washing tower body 1 includes an air intake assembly 2, a conical cylinder 4, a filler 7, an air outlet 3, a washing liquid inlet 5 and a washing liquid outlet 6, the air intake assembly 2 is located below the conical cylinder 4, the filler 7 is provided above the conical cylinder 4, the washing liquid inlet 5 is located above the filler 7, and the air outlet 3 is provided on the top of the washing tower body 1.

[0016] The air inlet assembly 2 is located below the conical cylinder 4 in the washing tower 1 and is a steady-flow gas device composed of uniform partitions.

[0017] The filler 7 is not limited to regular or random fillers, and can be made of metal or non-metal.

[0018] In order to facilitate loading and unloading of fillers, manholes 9 are provided above and below the two layers of fillers 7.

[0019] In order to facilitate the discharge of sludge, a sludge emptying hole 10 is connected to the bottom of the washing tower body, and a washing liquid outlet 6 is provided above the emptying hole.

[0020] A conical cylinder 4 is welded in the middle of the washing tower body 1, and the conical cylinder 4 divides the washing tower body 1 into two sections, namely, an upper section tower and a lower section tower.

[0021] The air inlet assembly 2 is arranged in the lower tower, and the upper and lower layers of fillers 7 are arranged in the upper tower. The upper and lower layers of fillers 7 are respectively fixed by a filler support base 7-1 and a filler support seat 7-2, and gas distributors 8 are respectively arranged above the two filler support seats 7-2. A washing liquid inlet 5 is arranged above the inner cavity of the washing tower body 1, and the washing liquid inlet 5 is connected to a water pipe, and one end of the water pipe extends into the washing tower body. An air outlet 2 is arranged in the inner cavity of the washing tower body 1 and above the top of the washing liquid inlet 5.

[0022] The lower tower is provided with a manhole 9, a washing liquid outlet 6, and an emptying hole 10. The washing liquid outlet 6 is located above the emptying hole 10, and the emptying hole 10 is located at the bottom of the washing tower body 1. Liquid level gauges 11 are provided at the bottom of the lower tower and the bottom of the air inlet assembly 2, respectively.

[0023] When the tail gas from the calcining furnace enters the washing tower body 1 from the air inlet component 2, the furnace gas rises upward. When passing through the conical cylinder 4, the gas flow rate increases to the optimal process rate for packing washing due to the diameter change effect. When passing through the packing 7, it can be filtered by the packing 7, and some impurities will remain in the packing 7. Water is flushed into the packing 7 through the washing liquid inlet 5 by a high-pressure water pump to quickly remove the impurities. The cleaned washing liquid falls into the bottom of the washing tower body 1 and is discharged from the washing liquid outlet 6. The gas-liquid contact is sufficient and the washing effect is high. The gas filtered by the packing 7 is further purified by the gas distributor 8, and the tail gas is discharged from the gas outlet 3 at the top of the tower.

Claims

1. A high-efficiency gas washing tower for calcining furnace tail gas, comprising a washing tower body (1), characterized in that The washing tower (1) further comprises an air intake assembly (2), a conical cylinder (4), a filler (7) and a gas distributor (8); a conical cylinder (4) is welded in the middle of the washing tower (1), and the washing tower (1) is divided into two sections, an upper section tower and a lower section tower, by the conical cylinder (4); the air intake assembly (2) is arranged in the lower section tower, and an upper and a lower layer of fillers (7) are arranged in the upper section tower, and the upper and lower layers of fillers (7) are respectively fixed by a filler support base (7-1) and a filler support seat (7-2), and gas distributors (8) are respectively arranged above the two filler support seats (7-2); a washing liquid inlet (5) is arranged above the inner cavity of the washing tower (1), and the washing liquid inlet (5) is connected to a water pipe, and one end of the water pipe extends to above the gas distributor (8) in the washing tower.

2. The high-efficiency gas scrubber for calcining furnace tail gas as claimed in claim 1, characterized in that The air intake assembly (2) is a steady-flow gas device composed of uniform partitions.

Images