Water supply device of denitration assembly of sintering machine

Abstract

The utility model discloses a sintering machine denitration component's water supply device, including water supply source, pressurization component and denitration water tank, the output end of water supply source is connected with pressurization component, pressurization component is connected with the input end of water consumption equipment, the output end of water consumption equipment is connected with denitration water tank. Supply water of the water supply source is pressurized by the pressurizing assembly and then supplies cooling water to the water consuming equipment, and the cooling water enters the denitration water tank after being heated by the water consuming equipment and supplies water to the denitration / desulfurization assembly; one path of water is supplied to the desulfurization and denitrification assembly and is also used as cooling water of water equipment; the equipment is simple in structure and low in cost, and improves the water utilization rate.

Description

TECHNICAL FIELD

[0001] The utility model relates to water supply technical field, concretely relates to a water supply device of sintering machine denitration subassembly. BACKGROUND

[0002] With environmental protection emission standard more and more strict, the national pollution control strength is unceasingly increased, the flue gas ultra -low emission reconstruction requirement of national issue meets, SO2 emission concentration < 35mg / Nm 3 , particulate matter concentration < 10mg / Nm 3 , NO X Emission concentration < 50mg / Nm 3 , steel industry sintering machine flue gas also needs to carry out corresponding flue gas emission treatment.

[0003] The cooling water supply device of the sintering machine in the steel industry is relatively single. When cooling water cools the equipment, it will gradually heat up due to absorbing the heat released by the equipment. If it is repeatedly used, it will eventually lose the cooling effect. Therefore, the heat absorbed by the process water is usually released through a cooling water tank or an intercooling tower. The cooling water tank needs to increase a liquid level meter to control the water supply amount. The equipment is more and more complex, and the cost is higher. If there is no cooling system and direct discharge, it will cause waste of water resources. SUMMARY

[0004] In view of the above technical problems existing in the prior art, the utility model provides a water supply device of sintering machine denitration subassembly, which improves the utilization rate of water resources.

[0005] The utility model discloses a kind of water supply devices of sintering machine denitration subassembly, including water supply source, booster assembly and denitration water tank, the output end of water supply source is connected with booster assembly, the input end of the water-using equipment is connected with booster assembly, the output end of the water-using equipment is connected with the denitration water tank.

[0006] Preferably, the output end of the water supply source is connected with the denitration water tank through the fifth valve;

[0007] Liquid level meter is arranged in the denitration water tank.

[0008] Preferably, the output end of the water supply source is provided with a mother pipe, and a flowmeter is arranged on the mother pipe.

[0009] Preferably, the output end of the booster assembly is provided with a pressure transmitter.

[0010] Preferably, the input end of the booster assembly is provided with a first valve.

[0011] Preferably, the booster assembly includes one or more booster branches, and the booster branch includes a second valve and a booster pump connected in sequence.

[0012] Preferably, multiple booster branches are connected in parallel;

[0013] The booster branch also includes a check valve and a drain valve;

[0014] The check valve is located at the output end of the booster pump;

[0015] One end of the drain valve is connected to the input end of the booster pump, and the other end is connected to the trench through a water pipe.

[0016] Preferably, a third valve is also provided at the output end of the booster pump.

[0017] The third valve is an electric butterfly valve, and the second valve is a manual butterfly valve.

[0018] Preferably, the output end of the denitrification water tank is connected to the denitrification component of the sintering machine.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: the water supply source is pressurized by the pressurization component to supply cooling water to the water-using equipment. After being heated by the water-using equipment, the cooling water enters the denitrification water tank to supply water to the denitrification / desulfurization components. The desulfurization and denitrification components are supplied with water through one channel, which is also used as cooling water for the water-using equipment. The equipment has a simple structure, low cost, and improves water utilization. Attached Figure Description

[0020] Figure 1 This utility model relates to a water supply device for a denitrification component of a sintering machine.

[0021] The diagram shows: 1 water supply source, 2 flow meter, 3 first valve.

[0022] 4. Boosting assembly; 41. First boosting branch; 42. Second boosting branch; 43. Second valve; 44. Boosting pump; 45. Check valve; 46. Third valve; 47. Drain valve; 48. Trench.

[0023] 7 Pressure transmitter, 8 Water equipment, 9 Denitrification water tank, 91 Fifth valve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings:

[0026] A water supply device for a sintering machine denitrification assembly, such as Figure 1 It includes a water supply source 1, a pressurization component 4, and a denitrification water tank 9. The output end of the water supply source 1 is connected to the pressurization component 4, the pressurization component 4 is connected to the input end of the water-using equipment 8, and the output end of the water-using equipment 8 is connected to the denitrification water tank 9.

[0027] The water supplied by water source 1 is pressurized by the booster component 4 and then supplied as cooling water to the water-using equipment 8. After being heated by the water-using equipment 8, the cooling water enters the denitrification water tank and supplies water to the denitrification / desulfurization components. It is also supplied to the desulfurization and denitrification components through a water supply line (process water) and used as cooling water for the water-using equipment. The equipment has a simple structure, low cost, and improves water utilization.

[0028] The output end of the denitrification water tank 9 is connected to the denitrification component of the sintering machine to supply water for the downstream denitrification / desulfurization process and to reuse the process water.

[0029] The water supply source can be a branch pipe (water intake point) on the main water supply pipe, and the water source can be room temperature water or condensate. Alternatively, the output end of the water supply source 1 is equipped with a main pipe, and a flow meter 2 is installed on the main pipe, which can ensure both water intake and that the water intake volume can be measured by the flow meter. However, the water supply source method is not limited to this.

[0030] The output end of the water supply source 1 is connected to the denitrification water tank 9 through the fifth valve 91; a level gauge is installed inside the denitrification water tank 9. When the level gauge detects that the water level in the denitrification water tank 9 is lower than the threshold, water is supplied to the denitrification water tank 9 through the fifth valve 91 to compensate for the insufficient cooling water consumption of the water-using equipment.

[0031] The output end of the booster assembly 4 is equipped with a pressure transmitter 7, which is used to detect water pressure and feed back the water pressure detection value to the host computer or client. The input water pressure of the booster pump can be remotely monitored to determine whether the operation meets the water supply requirements.

[0032] The input end of the booster assembly 4 is equipped with a first valve 3. This ensures that the booster assembly can be disconnected from the water source during maintenance.

[0033] The booster assembly 4 includes one or more booster branches, each used to independently boost the process water. Multiple booster branches are connected in parallel. More specifically, two booster branches are provided: a first booster branch 41 and a second booster branch 42, serving as backups for each other. If the booster pump of the first booster branch 41 malfunctions and requires maintenance, after stopping the pump and opening the second booster branch 42, the second valve 43 and the third valve 46 of the first booster branch 41 can be closed, and the drain valve can be opened to drain the water in the pipeline into the trench. After draining, the booster pump 44 can be inspected or maintained. This ensures that if one pipeline booster pump fails, the other can be immediately put into use.

[0034] More specifically, the booster branch also includes a check valve 45 and a drain valve 47; the check valve 45 is located at the output end of the booster pump 44; one end of the drain valve 47 is connected to the input end of the booster pump 44, and the other end is connected to the trench 48 via a water pipe; the drain valve 47 should be closed when the booster pump is operating. A third valve 46 is provided at the output end of the booster pump 44. The third valve 46 is an electric butterfly valve, while the second valve 43 is a manual butterfly valve. When one booster branch is operating, the other booster branch can be closed.

[0035] This invention draws water from a branch of the process water main pipe. A booster pump, installed in the pipeline, pumps a portion of the process water to various equipment requiring cooling water. The pressurized water then enters the denitrification water tank (also known as the process water tank) for reuse in denitrification and desulfurization processes. This significantly optimizes the water supply method, saving investment costs while ensuring cooling effectiveness. It simplifies the process flow, reduces equipment, recycles cooling water, and eliminates water waste.

[0036] Under normal circumstances, the flue gas temperature of the sintering machine is relatively high, and the water consumption for desulfurization and denitrification is much greater than the equipment cooling water consumption. Therefore, the returned cooling water will not cause the denitrification water tank to overflow. Moreover, this utility model only utilizes the low temperature of the process water to cool the equipment. After the heated water returns to the denitrification water tank, it will not have an adverse effect on the entire desulfurization and denitrification system.

[0037] This utility model consists of a booster pump, valves, pipelines, and multiple instruments. Normal operation and backup equipment switching are achieved by controlling the opening and stopping of the valves. The entire device can operate automatically, saving time and labor, and ensuring that the cooling water supply meets usage requirements while extending the device's lifespan. It reduces the footprint and number of equipment components, and the inclusion of a backup pipeline booster pump and monitoring system ensures uninterrupted operation, preventing the entire desulfurization and denitrification system from shutting down due to cooling water supply failures, thus avoiding sintering machine downtime and production disruptions. During operation, the backup booster pump can be automatically started and stopped based on instrument and pump monitoring, reducing equipment maintenance and labor costs, thereby reducing the construction and operating costs of the desulfurization and denitrification system.

[0038] This invention enables automatic switching and commissioning, ensuring stable operation of the entire water supply. The entire process is controlled by the DCS based on logic, requiring no manual operation, thus saving time and effort. It guarantees the continuity of cooling water supply, preventing the desulfurization and denitrification system from shutting down due to equipment overheating, and extends the service life of the entire system.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water supply device for a denitrification assembly of a sintering machine, characterized in that, Includes a water supply source (1), a pressurization assembly (4), and a denitrification water tank (9). The output end of the water supply source (1) is connected to the booster assembly (4), the booster assembly (4) is connected to the input end of the water-using equipment (8), and the output end of the water-using equipment (8) is connected to the denitrification water tank (9).

2. The water supply device according to claim 1, characterized in that, The output end of the water supply source (1) is connected to the denitrification water tank (9) through the fifth valve (91); A level gauge is installed inside the denitrification water tank (9).

3. The water supply device according to claim 1, characterized in that, The water supply source (1) is provided with a main pipe at its output end, and a flow meter (2) is provided on the main pipe.

4. The water supply device according to claim 1, characterized in that, The output end of the booster assembly (4) is equipped with a pressure transmitter (7).

5. The water supply device according to claim 1, characterized in that, The input end of the booster assembly (4) is provided with a first valve (3).

6. The water supply device according to claim 1, characterized in that, The booster assembly (4) includes one or more booster branches, each of which includes a second valve (43) and a booster pump (44) connected in sequence.

7. The water supply device according to claim 6, characterized in that, Multiple booster branches are connected in parallel; The pressurization branch also includes a check valve (45) and a drain valve (47); The check valve (45) is located at the output end of the booster pump (44); One end of the drain valve (47) is connected to the input end of the booster pump (44), and the other end is connected to the ditch (48) through a water pipe.

8. The water supply device according to claim 6, characterized in that, The output end of the booster pump (44) is also equipped with a third valve (46). The third valve (46) is an electric butterfly valve, and the second valve (43) is a manual butterfly valve.

9. The water supply device according to claim 1, characterized in that, The output end of the denitrification water tank (9) is connected to the denitrification component of the sintering machine.

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