Environment-friendly and energy-saving dust suppression system for hot slag braising process and using method thereof

[0025]Example 1

[0026]Please refer to the drawings in the specification. In the embodiment of the present invention, an environmentally friendly and energy-saving hot slagging process dust suppression system includes a host 1, a water inlet pipe 2, a water pipe 11, an air compressor 3, an air storage tank 4, and a vent pipe 12. The large spray gun distributor 6, the lotus nozzle distributor 5, four slag tanks and two vibrating screens, wherein one end of the host 1 is connected with the water inlet pipe 2, and the front end of the water inlet pipe 2 is installed with water inlet Valve 14, a water filter 15 is installed between the water inlet pipe 14 and the host 1, and the host 1 communicates with the large spray gun distributor 6 and the lotus nozzle distributor 5 through the water pipe 11; the air compressor 3 is connected to the The air storage tank 4 is in communication through a vent pipe 12, and a vent valve 16, an air filter 3, and a check valve 18 are sequentially installed between the air compressor 3 and the air storage tank 4. It communicates with the large spray gun distributor 6 and the lotus spray head distributor 5 through the vent pipe 12, the large spray gun distributor 6 and the large spray gun 8 communicate with each other through the first draft tube 10, the lotus spray head distributor 5 and the lotus spray head 7 are connected through the second guide tube 9; the large spray gun distributor 6 and the lotus nozzle distributor 5 are respectively added with dust inhibitor, using the ratio of dust inhibitor to water: range 1:400-1:100 The ratio of the inhibitor is added, and the experiment is carried out. The use cost is extremely low under the premise of meeting the effect. The inhibitor flow rate is automatically adjusted according to the actual water consumption; the inhibitor ratio is determined and remains constant, and does not change due to changes in grouping and water volume. Through compression The air is sprayed in the form of water mist; the water-medicine mixed liquid is mixed with compressed air in the nozzle cavity again, and sprayed evenly in an atomized state below 30 microns, and when it is stopped, a unique technology is used to make all the liquid remaining in the nozzle cavity The spray does not trickle; the liquid mixed with water and medicine is mixed with compressed air again in the foamer and sprayed in the form of foam. The foaming volume is large and the spraying is uniform. The water consumption of the system is only that of the common water spraying dust suppression system About 15% to 30%, the water saving effect is obvious; it effectively solves the shortcomings of the large consumption of dry mist and dust suppression water, and perfectly retains the advantages of small footprint, low energy consumption, and easy installation. The existing slag tank dust removal system is huge, wastes energy, high construction and production costs, low dust removal efficiency, high maintenance costs, etc.; the host 1 is a PLC control system, which achieves high dust suppression efficiency based on On-site process requirements, flexible opening of each dust suppression area, in the PLC control system, the design can independently open the four areas of the slag tank, two areas of the vibrating screen or two adjacent areas, etc., to achieve automatic control.

[0027]In this embodiment, the lotus nozzle 7 is installed on the lotus nozzle bracket at the top of the factory building, and 33 sets of lotus nozzles 7 are provided in the roof area of ​​the factory building, which are divided into four areas, corresponding to the operation of the slag pot 1-4 respectively. In the area, the lotus nozzle 7 in the middle part of each slagging tank is shared; when each slagging tank is operated, 12 sets of lotus nozzles 7 are turned on; the height of all lotus nozzles 7 is arranged so as not to affect the vehicle unloading when the carriage is raised to the highest position as far as possible When the dust in the workshop rises upward, the water mist with inhibitor sprayed by the lotus nozzle 7 continuously covers, adsorbs, and moistens, so that the rising dust descends and is restrained on the ground.

[0028]In this embodiment, when waste dumping and excavator shoveling, a large amount of dust rises, and lotus nozzles 7 are arranged at intervals of the roof frame; because the slag tanks are relatively close, the arrangement of lotus nozzles 7 does not need to be designed as a single independent area, and some lotus nozzles 7 It must be arranged as a common lotus nozzle 7 in two similar areas, so that each slag tank forms a local fog curtain suppression area during operation, and the purpose is to suppress dust during operation; and finally suppress drifting dust from rising to the roof of the factory. This optimization measure saves 15 sets of lotus nozzles 7 compared with the independent setting of each slag tank.

[0029]In this embodiment, a large spray gun 8 inclined downward by 15° is installed on one of the plant columns of the dust-producing point section of the four slag tank operation areas for the first suppression; the large spray guns 8 are arranged at a distance of about 1.5m (according to On-site adjustment), there are 42 large spray guns 8 arranged on one side, divided into four areas. To save investment, some large spray guns 8 are also used as common large spray guns 8 for two adjacent areas. When a single area is opened, use the large spray gun 14 Up to 16; this optimization measure saves 30 large spray guns 8 compared to each slag tank independently; on the other side of the plant, two areas are arranged, and 12 large spray guns 8 are set in a single area to act on the vibrating screen. When the first dust suppression is carried out, the two areas can be opened separately, a total of 24 large spray guns are arranged, and the large spray gun 8 is added to install the maintenance walkway; the lotus nozzle 7 is installed on the top of the factory above the dust producing area for the second suppression, Suppress no dead ends.

[0030]In this embodiment, a spare water pipe 13 is provided between the host 1 and the large spray gun distributor 6 and the lotus nozzle distributor 5 respectively.

[0031]In this embodiment, through the PLC control system, when the workshop is working as a whole, the dust suppression can be divided into areas and used to meet the dust suppression requirements in four aspects. First, the four slag pools do not work, and the lotus nozzle 7 above each pool is opened at the same time , To suppress the dust in the workshop; two or four slag tanks for slag discharge operations, the slag slag tank and vibrating screen simultaneously suppress dust; 3. two adjacent slag tanks, one for slag discharge and one for slag discharge at the same time Time (equivalent to two slag tanks and a vibrating screen for simultaneous dust suppression) to achieve simultaneous dust suppression Four. Two non-adjacent slag tanks, one slag discharge and one knocking basin are operated at the same time (equivalent to two slag tanks and a vibrating screen for simultaneous dust suppression) to achieve simultaneous dust suppression.

[0032]In this embodiment, asFigure 4 The PLC control method is as follows:

[0033]way to control:

[0034]There are six groups to control X0 K0 open roof lotus nozzle

[0035]The first group of vibrating screen spray gun control: 1A distribution box.

[0036]The second group of vibrating screen spray gun control: 2A distribution box.

[0037]4# Pool controls the first group: 3A, 3B, 4A, 4B, 10A, 11A distribution boxes.

[0038]3# Pool controls the second group: 4A, 4B, 5A, 6A, 11A, 12A, 13A distribution boxes.

[0039]2# Pool control third group: 6A, 7A, 8A, 8B, 13A, 14A, 15A distribution box.

[0040]1# Pool controls the fourth group: 8A, 8B, 9A, 9B, 15A, 16A distribution boxes.

[0041]among them

[0042]4A, 4B, 11A are shared by 3 and 4# slag tanks.

[0043]6A and 13A are shared by 2 and 3# slag pool.

[0044]8A, 8B, and 15A are shared by 1, 2# slag pool.

[0045]Example 2

[0046]An environment-friendly and energy-saving method of using a dust suppression system for hot braising slag process, wherein:

[0047]S1: Perform a dust inhibitor ratio experiment through the dispensing box, and select the best ratio of dust inhibitor to water. The ratio of dust inhibitor to water: the range is 1:400-1:1000;

[0048]S2: After completing the dust inhibitor ratio experiment, then set the host 1, and then start the host 1 for dust suppression, and start the air compressor 3 at the same time, and supply the compressed air to the air storage tank through the air filter 17 4;

[0049]S3: After the pressure of the air storage tank 4 is stabilized, the stable compressed air is supplied to the large spray gun distributor 6 and the lotus nozzle distributor 5 according to the flow rate set by the PLC control system, and the host 1 receives the water supplied by the water source and the air storage tank 4 Provide stable compressed air;

[0050]S4: After the host 1 filters the water and air through the water filter 15 and the air filter 17, the control valve is operated according to the PLC control system at the set water pressure, air pressure, water flow, air flow, and dust suppression inhibitor flow. Turn it on or off, and send it to the large spray gun 8 and the lotus nozzle 7 through the large spray gun distributor 6 and the lotus nozzle distributor 5 for spraying, so as to achieve dust suppression.