Cooling water side flow treatment system for production line for preparing potassium chloride from sintering fly ash

Abstract

The utility model discloses a cooling water side flow treatment system for a production line for preparing potassium chloride from sintering fly ash. The cooling water side flow treatment system comprises a side plate arranged around an air outlet of a cooling tower, clamping plates are arranged on the inner sides of the side plates. Water vapor transmission channels are formed between the clamping plates and the side plates. A side suction fan is mounted on the clamping plate, and is used for sucking water vapor discharged from the air outlet into the transmission channel; the bottom of the transmission channel communicates with the cooling pool; water vapor discharged from the cooling tower can be sucked into the transmission channel through the side suction fan, and then the water vapor in the transmission channel is recycled, so that the water source loss in the process of cooling circulating water by the cooling tower can be effectively reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooling water treatment, in particular to a cooling water side stream treatment system for a production line for preparing potassium chloride by sintering dust removal ash. Background Art

[0002] In the production line of potassium chloride produced from sintering dust ash, a large amount of production wastewater is generated. The wastewater contains some chemical elements that cannot be discharged directly and needs to be cooled in a cooling tower before subsequent treatment.

[0003] During the cooling process of the cooling tower, there is an exhaust fan on the top of the cooling tower, which can discharge the high-temperature water vapor inside from the top of the cooling tower, thereby achieving the purpose of cooling.

[0004] However, some water will be lost in the process of discharging water vapor, resulting in the need for a large amount of water to be supplemented frequently for the production of circulating water. Utility Model Content

[0005] The utility model aims to provide a cooling water side stream treatment system for a production line for preparing potassium chloride from sintering dust removal ash, so as to reduce the water source loss in the process of cooling the circulating water in the cooling tower.

[0006] The utility model adopts the following technical scheme: a cooling water side stream treatment system for a production line for preparing potassium chloride from sintering dust removal ash, comprising a side plate arranged around the air outlet of a cooling tower, the side plate being made of a light and corrosion-resistant plastic insulation material;

[0007] A clamping plate is provided on the inner side of the side plate, and a water vapor transmission channel is formed between the clamping plate and the side plate;

[0008] A side suction fan is installed on the splint. The side suction fan adopts high-power frequency conversion control to absorb the water vapor discharged from the air outlet into the transmission channel.

[0009] The bottom of the transmission channel is connected to the cooling water pool.

[0010] Furthermore, a filter is installed in the transmission channel.

[0011] Furthermore, a blocking plate is provided at the bottom of the transmission channel, the blocking plate is connected to a drain pipe, and the other end of the drain pipe is connected to a cooling water pool.

[0012] Furthermore, the water outlet end of the drain pipe is located below the liquid surface in the cooling water pool.

[0013] Furthermore, a top plate is arranged on the top of the side plate, the top plate and the side plate form a barrel shape, and the top plate is made of a lightweight, corrosion-resistant plastic insulating material.

[0014] Further, the bottom end of the transmission channel is located at the bottom of the cooling tower.

[0015] The beneficial effects of the utility model are:

[0016] The utility model can suck the water vapor exhausted from the cooling tower into the transmission channel through the variable frequency automatic control of the side suction fan speed, and through the effect of forced air cooling, the initial water vapor with a cooling tower outlet temperature of about 60°C is cooled to 30°C, thereby strengthening the cooling and recovery of high-temperature steam and water, and then recovering the water vapor in the transmission channel, which can effectively reduce the water loss in the cooling tower for circulating water cooling process, thereby reducing production costs. This technical solution can be implemented in a relatively wide area around the factory building. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a cooling water side stream treatment system for a production line for preparing potassium chloride from sintering dust ash according to an embodiment of the utility model;

[0018] Figure 2 The present invention is a schematic cross-sectional structure diagram of a cooling water side stream treatment system of a production line for preparing potassium chloride from sintering dust ash according to an embodiment of the present invention.

[0019] Among them: 10. Side plate; 11. Clamp plate; 12. Drain pipe; 13. Side suction fan; 14. Filter; 15. Top plate;

[0020] 20. Cooling water pool; 30. Circulating water pipe; 40. Cooling tower. DETAILED DESCRIPTION

[0021] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0022] The utility model discloses a cooling water side stream treatment system for a production line for preparing potassium chloride from sintering dust removal ash. Figure 1 As shown, it includes a side plate 10 arranged around the air outlet of the cooling tower 40; a clamping plate 11 is arranged on the inner side of the side plate 10, and a water vapor transmission channel is formed between the clamping plate 11 and the side plate 10; a side suction fan 13 is installed on the clamping plate 11, and the side suction fan 13 is used to suck the water vapor discharged from the air outlet into the transmission channel; the bottom of the transmission channel is connected to the cooling water pool 20.

[0023] The utility model can suck the water vapor exhausted from the cooling tower 40 into the transmission channel through the side suction fan 13, and then recover the water vapor in the transmission channel, which can effectively reduce the water loss in the cooling tower 40 during the cooling of the circulating water, thereby reducing the production cost.

[0024] In the embodiment of the utility model, the surfaces of the side plates 10 and the clamping plates 11 are coated with an anti-corrosion layer to prevent the chemical components in the circulating water from corroding them, thereby increasing the operating time of the entire system.

[0025] The axial height of the side suction fan 13 is close to the highest height of the water vapor discharged from the cooling tower 40. This is because when the water vapor rises to the highest height, its rising force basically disappears. At this time, under the suction force of the side suction fan 13 (the minimum suction force can achieve the maximum effect), the water vapor can be easily sucked into the transmission channel.

[0026] When water vapor enters the transmission channel, due to the high temperature of the water vapor and the low temperature of the clamping plate 11 and the side plate 10, the water vapor will liquefy when it contacts the clamping plate 11 and the side plate 10, and then the liquefied water will flow downward under the action of gravity.

[0027] In one embodiment, a filter 14 is installed in the transmission channel. The filter is preferably an activated carbon filter, which can absorb toxic and harmful substances in water vapor, reduce the corrosiveness of water vapor to the system, and reduce the corrosion to production line equipment during subsequent recycling.

[0028] A plugging plate is provided at the bottom of the transmission channel, and a drain pipe 12 is connected to the plugging plate, and the other end of the drain pipe 12 is connected to the cooling water pool 20. The filtered water passing through the filter 14 can be controlled through the bottom plate to control the amount of water in the transmission channel.

[0029] In one embodiment, the outlet end of the drain pipe 12 is located below the liquid level in the cooling water pool 20. In this way, the filtered water can be directly discharged into the large amount of cooling water in the cooling water pool 20 to further cool it. In addition, some residual water vapor will be discharged with the filtered water. When this water vapor enters the cooling water, it will be further liquefied, greatly reducing the amount discharged into the air, so as to prevent the water vapor from falling on the equipment or green plants around the cooling tower 40, thereby avoiding corrosion of the surrounding equipment and damage to the green plants.

[0030] A top plate 15 is provided on the top of the side plate 10, and the top plate 15 and the side plate 10 form a barrel shape. The top plate 15 can prevent water vapor from rising and scattering around the cooling tower, thereby avoiding affecting the surrounding environment of the cooling tower.

[0031] As a specific implementation manner, the bottom end of the transmission channel is located at the bottom of the cooling tower 40 , thereby preventing water vapor from diffusing from the bottom of the cooling tower 40 .

[0032] In this practical embodiment, the treatment system can bring economic benefits in terms of environmental protection and water conservation. The comprehensive economic benefit considerations are as follows.

[0033] 1. Environmental benefits:

[0034] The utility model can change the corrosion of the colored steel tiles around the factory building by the free escape of water vapor from the original cooling tower, and reduce the maintenance cost by 137,800 yuan. The maintenance cost of colored steel tiles = the area of ​​sprayed colored steel tiles * unit price + construction cost = 1,500 square meters * 25 yuan / square meter + 8,400 yuan = 45,900 yuan. It is updated every six months. The annual maintenance cost is 91,800 yuan. After the implementation of this plan, it is replaced once every two years, and the cost savings are 45,900 * 3 = 137,700 yuan.

[0035] 2. Water-saving benefits:

[0036] In this embodiment, the equipment used for processing steam condensate in the production line is one DFNDP-200 cooling tower and three square countercurrent FRP cooling towers. The actual production water treatment capacity is 168 tons / h, and the annual production time is 300 days*24 hours=7200 hours.

[0037] According to the statistical data analysis in the actual production process, after adopting the technical solution of the utility model, the water vapor recovery rate of the cooling tower is significantly improved by 4-10%, and the recovered water vapor is collected in the condensate water pool for cleaning and dust removal in the front-end process, which can replace the same amount of industrial water for production.

[0038] Specific benefit calculation: Annual cooling water treatment volume = 168*7200 = 1209600 tons. Calculated based on 8% of the evaporation steam-water loss (same water replacement), the production water saved = 1209600*0.04 = 48384 tons. The current production water settlement price is 2.69 yuan / ton (tax included), and the calculated cost savings = 48384*2.69 = 130152.96 yuan.

[0039] 3. Construction cost of this utility model solution:

[0040] Side panels*4+top*1+plywood*2+drain pipes*2+side suction fans*2+filters+circulating water pipes*2+construction and installation costs=2000+500+500+4000*2+100+200+1000=12300 yuan;

[0041] Annual electricity cost of side suction fan: 2 kW / h*24 hours / day*300 days / year*0.5 yuan / kWh=7200 yuan;

[0042] 4. Total economic benefits: 137700+130152.96-12300-7200=248352.96 yuan.

Claims

1. A cooling water side stream treatment system for a production line for preparing potassium chloride from sintering dust removal ash, characterized in that: It comprises a side plate (10) arranged around the air outlet of the cooling tower (40); A clamping plate (11) is provided on the inner side of the side plate (10), and a water vapor transmission channel is formed between the clamping plate (11) and the side plate (10); A side suction fan (13) is installed on the clamping plate (11), and the side suction fan (13) is used to suck the water vapor discharged from the air outlet into the transmission channel; The bottom of the transmission channel is in communication with a cooling water pool (20).

2. A cooling water side stream treatment system for a sintering dust removal ash production line for preparing potassium chloride as claimed in claim 1, characterized in that: A filter (14) is installed in the transmission channel.

3. A cooling water side stream treatment system for a sintering dust removal ash production line for preparing potassium chloride as claimed in claim 2, characterized in that: A blocking plate is provided at the bottom of the transmission channel, the blocking plate is connected to a drainage pipe (12), and the other end of the drainage pipe (12) is connected to a cooling water pool (20).

4. A cooling water side stream treatment system for a sintering dust removal ash production line for preparing potassium chloride as claimed in claim 3, characterized in that: The water outlet end of the drainage pipe (12) is located below the liquid surface in the cooling water pool (20).

5. A cooling water side stream treatment system for a sintering dust removal ash production line for preparing potassium chloride as described in any one of claims 2 to 4, characterized in that: A top plate (15) is arranged on the top of the side plate (10), and the top plate (15) and the side plate (10) form a barrel shape.

6. A cooling water side stream treatment system for a sintering dust removal ash production line for preparing potassium chloride as claimed in claim 5, characterized in that: The bottom end of the transmission channel is located at the bottom of the cooling tower (40).

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