Simplified low-energy-consumption automatic preparation system for carbide slag slurry

Abstract

The utility model relates to the technical field of carbide slag slurry preparation equipment, in particular to an extremely-simplified low-energy-consumption automatic carbide slag slurry preparation system which comprises a hopper, a belt weighing feeder, a slurry melting pool, a separation device, a carbide slag slurry box, a slurry pump and an absorption tower which are sequentially connected, and the separation device is connected with a first liquid outlet pipe and a second liquid outlet pipe. The first liquid outlet pipe is connected with the carbide slag slurry tank, the second liquid outlet pipe is connected with a screening device, the screening device is connected with the slurry melting tank, the separating device is a cyclone, and the screening device is a linear vibrating screen. The carbide slag is stirred and smashed through the first double-layer stirrer, carbide slag particles are small, the slurry preparation quality is good, and the production cost is reduced; the whole structure is simple, the number of used equipment is small, the system is extremely simplified, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of carbide slag slurry preparation equipment, in particular to an extremely simplified low-energy consumption carbide slag slurry automatic preparation system. Background Art

[0002] The limestone-gypsum wet flue gas desulfurization system is the main technical process for flue gas desulfurization systems in thermal power plants in my country. In recent years, the source of limestone for domestic thermal power plants has been unstable, and some power plants are far away from limestone production areas. The transportation cost plus the limestone cost have caused some power plants to be overwhelmed, and even become the main production cost of power plants; in addition, the limestone desulfurization system requires limestone feeding, transportation, grinding, and conveying process systems. The system is relatively complex, and the system has high energy consumption, high failure rate, and high maintenance cost. The main component of calcium carbide slag is Ca(OH)2. After being configured into slurry, it is used in the wet desulfurization system and can completely replace the original desulfurizer.

[0003] Most process systems using carbide slag as a desulfurizer have complex structures and high energy consumption. They have process systems such as material storage, transfer, prefabrication, slurrying, storage, and transportation. The maintenance work caused by the complexity of the system is relatively heavy, and the carbide slag is usually only screened once in the whole system. The utilization efficiency of carbide slag is low, and a large amount of waste carbide slag still needs to be processed later. Therefore, it is necessary to provide an automatic carbide slag slurry preparation system with low energy consumption, extremely simplified system, high carbide slag utilization rate, and good slurry preparation quality. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides an extremely simplified low-energy consumption calcium carbide slag slurry automatic preparation system, which avoids the problems of complex existing calcium carbide slag slurry preparation process and high energy consumption.

[0005] In order to solve the above problems, the technical solution of the utility model is as follows: a simplified low-energy consumption carbide slag slurry automatic preparation system, comprising a hopper, a belt weighing feeder, a pulping tank, a separation device, a carbide slag slurry tank, a slurry pump, and an absorption tower connected in sequence according to the flow direction of the carbide slag slurry;

[0006] The pulping tank is connected to the separation device via a main flow liquid pipe;

[0007] The separation device is connected with a first liquid outlet pipe and a second liquid outlet pipe, the first liquid outlet pipe is connected with the carbide slag slurry box, the second liquid outlet pipe is connected with a screening device for further screening the carbide slag, and the screening device is connected with the pulping tank.

[0008] Furthermore, the separation device is a cyclone, which includes a cylinder with an inner diameter that gradually decreases from top to bottom, a feed port connected to the main liquid pipe is provided at the upper end of the cylinder, an overflow port connected to the first liquid outlet pipe is provided at the top of the cylinder, and a slag outlet connected to the second liquid outlet pipe is provided at the bottom of the cylinder.

[0009] Furthermore, a pressure gauge for measuring the pressure of the carbide slag liquid is provided on the feed port.

[0010] Furthermore, an iron remover is provided between the hopper and the pulping tank.

[0011] Furthermore, the screening device is a linear vibrating screen.

[0012] Furthermore, a slurry pump for filtering carbide slag slurry is provided on the main liquid pipe.

[0013] Furthermore, a first double-layer agitator is provided in the pulping tank.

[0014] Furthermore, a second double-layer agitator is provided in the carbide slag slurry tank.

[0015] Furthermore, the linear vibrating screen is connected to a slag bin.

[0016] Compared with the prior art, the utility model has the following beneficial effects: carbide slag liquid and carbide slag can be circulated between the slurry tank, the cyclone and the linear vibrating screen, the utilization rate of the carbide slag is greatly improved, and the carbide slag particles are smaller after being stirred and broken by the first double-layer agitator, the slurry preparation quality is better, and the production cost is reduced; the overall structure is simple, and fewer equipments are used, which realizes the extreme simplification of the system and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a half-section view of the cyclone of the utility model.

[0019] Explanation of the reference numerals: 1 hopper, 2 belt weighing feeder, 3 pulping tank, 4 separation device, 5 carbide slag slurry box, 6 slurry pump, 7 absorption tower, 8 main liquid pipe, 9 first liquid outlet pipe, 10 second liquid outlet pipe, 11 screening device, 12 cylinder, 13 feed port, 14 pressure gauge, 15 overflow port, 16 slag outlet, 17 iron remover, 18 slag bin, 19 pulping pump, 20 first double-layer agitator, 21 second double-layer agitator. DETAILED DESCRIPTION

[0020] like Figure 1 , Figure 2As shown, a simplified low-energy consumption carbide slag slurry automatic preparation system includes a hopper 1, a belt weighing feeder 2, a pulping tank 3, a separation device 4, a carbide slag slurry tank 5, a slurry pump 6, and an absorption tower 7, which are connected in sequence according to the flow direction of the carbide slag slurry;

[0021] The pulping tank 3 is connected to the separation device 4 through the main flow pipe 8;

[0022] The separation device 4 is connected to a first liquid outlet pipe 9 and a second liquid outlet pipe 10 . The first liquid outlet pipe 9 is connected to the carbide slag slurry box 5 . The second liquid outlet pipe 10 is connected to a screening device 11 for further screening the carbide slag. The screening device 11 is connected to the pulping tank 3 .

[0023] The separation device 4 is a cyclone, such as Figure 2 As shown, the cyclone includes a cylinder 12 whose inner diameter gradually decreases from top to bottom, a feed port 13 connected to the main liquid pipe 8 is provided at the upper end of the cylinder 12, the feed port 13 is tangent to the inner wall of the cylinder 12, so as to form centrifugal force, a pressure gauge 14 for measuring the pressure of the calcium carbide slag liquid is provided on the feed port 13, an overflow port 15 connected to the first liquid outlet pipe 9 is provided at the top of the cylinder 12, and a slag outlet 16 connected to the second liquid outlet pipe 10 is provided at the bottom of the cylinder 12.

[0024] An iron remover 17 is provided between the hopper 1 and the pulping tank 3 .

[0025] The screening device 11 may be a linear vibrating screen, the structure of which is prior art and will not be described in detail. The linear vibrating screen is connected to a slag bin 18 .

[0026] A slurry pump 19 for filtering carbide slag slurry is provided on the main liquid pipe 8.

[0027] A first double-layer agitator 20 is provided in the pulping tank 3 .

[0028] A second double-layer agitator 21 is provided in the carbide slag slurry tank 5 .

[0029] Production process: Figure 1As shown in the figure, the arrows indicate the flow direction of carbide slag slurry and carbide slag. Workers pour carbide slag into hopper 1, and transport it to pulping tank 3 through belt weighing feeder 2. According to the weight of carbide slag, an appropriate amount of water is introduced into pulping tank 3 to obtain carbide slag slurry. Under the action of first double-layer agitator 20, it is initially stirred and crushed, and then filtered by pulping pump 19. Carbide slag slurry enters cyclone from main flow pipe 8 for diversion. Under the action of centrifugal field, fine-grained carbide slag slurry moves upward with the inner vortex, enters carbide slag slurry tank 5 from overflow port 15 through first liquid outlet pipe 9, and then enters into slurry tank 5 through first liquid outlet pipe 9. The two double-layer agitators 21 stir and crush to further ensure the quality of the carbide slag slurry; in addition, the large-particle carbide slag slurry moves downward with the external vortex, enters the linear vibrating screen from the bottom slag outlet 16 through the second liquid outlet pipe 10, and is then screened by the linear vibrating screen. The unusable large-particle carbide slag enters the slag bin for recycling, and the smaller-particle carbide slag slurry enters the pulping pool 3 to continue stirring and crushing, and then enters the cyclone through the main liquid pipe 8 to form a circulation, and finally is further stirred and crushed in the carbide slag slurry box 5, and is transported to the absorption tower 7 through the slurry pump 6 to complete the preparation process.

[0030] In the whole system, the utilization rate of carbide slag is greatly improved, the treated carbide slag particles are smaller, the quality of carbide slag slurry is higher, the whole system is extremely simplified, the energy consumption is reduced, and the production cost is greatly reduced.

[0031] The above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A simplified low-energy consumption calcium carbide slag slurry automatic preparation system, Features: It includes a hopper, a belt weighing feeder, a pulping tank, a separation device, a carbide slag slurry tank, a slurry pump, and an absorption tower, which are connected in sequence according to the flow direction of the carbide slag slurry; The pulping tank is connected to the separation device via a main flow liquid pipe; The separation device is connected with a first liquid outlet pipe and a second liquid outlet pipe, the first liquid outlet pipe is connected with the carbide slag slurry box, the second liquid outlet pipe is connected with a screening device for further screening the carbide slag, and the screening device is connected with the pulping tank.

2. According to claim 1, a simplified low-energy consumption calcium carbide slag slurry automatic preparation system, Features: The separation device is a cyclone, which includes a cylinder with an inner diameter that gradually decreases from top to bottom, a feed port connected to the main liquid pipe is provided at the upper end of the cylinder, an overflow port connected to the first liquid outlet pipe is provided at the top of the cylinder, and a slag outlet connected to the second liquid outlet pipe is provided at the bottom of the cylinder.

3. According to claim 2, a simplified low-energy consumption calcium carbide slag slurry automatic preparation system, Features: The feed port is provided with a pressure gauge for measuring the pressure of the carbide slag liquid.

4. According to claim 1, a simplified low-energy consumption calcium carbide slag slurry automatic preparation system, Features: An iron remover is provided between the hopper and the pulping tank.

5. According to claim 1, a simplified low-energy consumption calcium carbide slag slurry automatic preparation system, Features: The screening device is a linear vibrating screen.

6. A simplified low-energy consumption calcium carbide slag slurry automatic preparation system according to claim 5, Features: A slurry pump for filtering carbide slag slurry is provided on the main liquid pipe.

7. A simplified low-energy consumption calcium carbide slag slurry automatic preparation system according to claim 6, Features: A first double-layer agitator is arranged in the pulping tank.

8. A simplified low-energy consumption calcium carbide slag slurry automatic preparation system according to claim 7, Features: A second double-layer agitator is provided in the carbide slag slurry tank.

9. A simplified low-energy consumption calcium carbide slag slurry automatic preparation system according to claim 5, Features: The linear vibrating screen is connected with a slag bin.

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