Multi-reaction-chamber cooperative processing device for purifying and discharging flue gas of coke oven

Abstract

The invention discloses a multi-reaction-chamber cooperative treatment device for purifying and discharging coke oven flue gas, which is improved according to the flowing process of flue gas in a coke oven flue gas treatment process, specifically, the coke oven flue gas is directly injected into one independent water sump by utilizing a liquid level balance principle and is in contact with a water body in the independent water sump, so that the purposes of cooling and dust removal are achieved; the method is characterized in that an empty bin / gas bin reserved in each independent water bin serves as a temporary storage space of coke oven flue gas, the arrangement mode of a liquid level U-shaped pipe is further utilized, and relevant parameters of the coke oven flue gas discharged from the independent water bins are indirectly controlled by changing the liquid level height in the independent water bins. Specifically, active intervention is carried out in cooperation with the working state of coke oven flue gas treatment equipment, an associated linkage control system is established for the active intervention, the linkage control system is used for actively interfering the air supply action, the air leakage action, the water injection action and the water drainage action, and each independent water sump can be interacted to balance technological parameters in a plurality of treatment equipment.

Description

Technical Field

[0001] The invention relates to the technical field of coking technology, and in particular to a multi-reaction chamber coordinated processing device for purifying and discharging coke oven flue gas. Background Art

[0002] The coke oven flue gas produced by the coking process is a heavy pollutant and requires multiple treatment processes according to the types of pollution, such as sulfur removal, dust removal, and denitrification. The essence is to transport the flue gas to the corresponding treatment equipment through an underground flue combined with a fan / distributor.

[0003] The different treatment efficiencies of flue gas in different process equipment will directly affect the treatment process inside each treatment equipment. For example, if the treatment efficiency of the previous treatment equipment is high and the flue gas directly discharged is quickly charged into the next treatment equipment, the flue gas volume may exceed the upper limit of the working capacity of the next treatment equipment, directly affecting the treatment effect, or be far below the minimum working requirement of the next treatment equipment, resulting in the problem of motion waste;

[0004] In summary, each processing device affects and restricts each other, which may cause disorder of process parameters in one or more processing devices. This application proposes a solution to this problem. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-chamber collaborative processing device for coke oven flue gas purification and emission. It is aimed at multiple processing equipment required for the coke oven flue gas treatment process. Because each processing equipment influences and restricts each other, specifically, there are differences in the processing efficiency of each processing equipment, which leads to disorder of process parameters in one or more processing equipment, directly affecting the flue gas treatment effect.

[0006] The object of the present invention can be achieved by the following technical scheme: A multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission, comprising a water bunker sleeve, wherein a plurality of independent water bunkers are provided inside the water bunker sleeve, wherein the independent water bunkers are arranged in a circular array along the center point of the water bunker sleeve, and a central gas bunker sleeve corresponding to the independent water bunkers is provided at the center point of the water bunker sleeve;

[0007] A plurality of groups of liquid level U-shaped tubes are arranged between two of the adjacent independent water tanks, and a gas-liquid two-way tube and a drainage pipe are respectively provided at the upper and lower ends of the independent water tanks. A pressure-boosting tube and an air injection tube are installed at the position of the water tank sleeve corresponding to the independent water tank. The end of the air injection tube is open and extends to the inner bottom end of the independent water tank. A pressure-expanding rubber sleeve is installed at the end of the pressure-boosting tube.

[0008] It is further configured as follows: an air pipe assembly corresponding to an independent water tank is installed in the central air tank sleeve, the air pipe assembly is arranged in a vertical direction and a plurality of balloons are installed thereon, the balloons are linearly and equidistantly arranged along the height direction of the independent water tank, and the balloons extend into the independent water tank.

[0009] It is further configured as follows: pure water is injected into the independent water tank, and the liquid level of the pure water is higher than the end position of the air injection pipe.

[0010] It is further configured that: the top end position of the liquid level U-shaped tube is higher than the upper surface of the water bin cover or lower than the top end position of the inner wall of the water bin cover.

[0011] It is further configured that: the distances between the two ends of the liquid level U-shaped tube and the bottom end of the inner wall of the independent water tank are not equal.

[0012] The multi-reaction chamber collaborative processing device includes the following parts during operation:

[0013] S1: Perform air replenishment or air release through the outward expansion rubber sleeve of the pressure compensation pipe, perform water filling or water discharge inside the independent water tank through the gas-liquid double-pass pipe and the drainage pipe, and perform flow exchange on the independent water tanks in two adjacent positions through the liquid level U-shaped pipe;

[0014] S2: The pressure control assembly is used to record the pressure value in the air pipe assembly and to feed back the liquid level height in each independent water tank, and a linkage control system for air replenishment action, air release action, water injection action, water drainage action and flow conversion action is established in the pressure control assembly. The linkage control system is based on the liquid level height in the independent water tank and the treatment state coefficient in each coke oven flue gas treatment equipment, and establishes a non-equilibrium formula in the independent water tank in every two adjacent positions, and controls the flow conversion action by controlling the air replenishment action, air release action, water injection action and water drainage action.

[0015] The present invention has the following beneficial effects:

[0016] 1. The present invention is to improve the flow process of flue gas in the coke oven flue gas treatment process, mainly to interfere with the flue gas flow process between two or more treatment equipment, and specifically to utilize the liquid level balance principle. The coke oven flue gas in a single treatment equipment will be directly injected into an independent water tank and contact the water inside it, which plays a role in cooling and dust removal. The key is to use the empty tank / gas tank reserved in each independent water tank as a temporary storage space for coke oven flue gas, and to directly control the relevant state parameters of coke oven flue gas discharge by changing the liquid level height in each independent water tank;

[0017] 2. Based on the above content, a linkage control system is established in the overall device, which mainly utilizes the setting method of the liquid level U-tube and the liquid level balance principle. Its purpose is to ensure the backflow process of the water body inside the independent water tanks in the two adjacent positions by changing the liquid level height in the independent water tanks to indirectly control the relevant parameters of the coke oven flue gas discharged from the independent water tanks. Specifically, it actively intervenes in conjunction with the working status of the coke oven flue gas treatment equipment. For this purpose, an associated linkage control system is established to actively interfere with the air replenishment action, air release action, water injection action, and drainage action. Each independent water tank can interact and balance the process parameters in multiple equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission proposed by the present invention;

[0020] Figure 2 A top cross-sectional view of a water silo jacket in a multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission proposed by the present invention;

[0021] Figure 3 A multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission proposed by the present invention Figure 1 sectional view of

[0022] Figure 4 A multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission proposed by the present invention Figure 1 Vertical section of

[0023] Figure 5 A multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission proposed by the present invention Figure 1 Cross-sectional view of .

[0024] In the figure: 1. Water tank cover; 101. Independent water tank; 2. Pressure compensation pipe; 3. Air injection pipe; 4. Liquid level U-shaped pipe; 5. Air-liquid two-way pipe; 6. Pressure control assembly; 7. Central air tank cover; 8. Pressure expansion rubber cover; 9. Air pipe assembly. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1: For the multiple processing equipments required for the coke oven flue gas treatment process, since each processing equipment affects and restricts each other, specifically, the processing efficiency of each processing equipment is different, resulting in disorder of process parameters in one or more processing equipments, which directly affects the flue gas treatment effect. A solution is proposed:

[0027] Reference Figures 1 to 5 In this embodiment, a multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission includes a water tank jacket 1, a plurality of independent water tanks 101 are provided inside the water tank jacket 1, and the independent water tanks 101 are arranged in a circular array along the center point of the water tank jacket 1, and a central gas tank jacket 7 corresponding to the independent water tank 101 is provided at the center point of the water tank jacket 1;

[0028] Multiple groups of liquid level U-shaped tubes 4 are arranged between two independent water tanks 101 in adjacent positions, and gas-liquid dual-pass tubes 5 and drainage pipes are respectively provided at the upper and lower ends of the independent water tanks 101. A pressure-boosting tube 2 and an air injection tube 3 are installed at the position of the water tank cover 1 corresponding to the independent water tank 101. The end of the air injection tube 3 is open and extends to the inner bottom of the independent water tank 101. A pressure-expanding rubber sleeve 8 is installed at the end of the pressure-boosting tube 2. An air pipe assembly 9 corresponding to the independent water tank 101 is installed in the central air tank cover 7.

[0029] The air pipe assembly 9 is arranged in the vertical direction and a plurality of balloons are installed on it. The balloons are arranged linearly and equidistantly along the height direction of the independent water tank 101, and the balloons extend into the independent water tank 101. Pure water is injected into the independent water tank 101. The liquid level of the pure water is higher than the end position of the air injection pipe 3. The top position of the liquid level U-shaped tube 4 is higher than the upper surface of the water tank cover 1 or lower than the top position of the inner wall of the water tank cover 1. The distances between the two ends of the liquid level U-shaped tube 4 and the bottom end of the inner wall of the independent water tank 101 are not equal.

[0030] Working principle: The overall device is based on the treatment process of coke oven flue gas. Because there are many pollutants in coke oven flue gas, the treatment equipment specifically includes a dust collector, a desulfurization device, a denitrification device, etc. For this, the present invention does not specifically describe the treatment equipment in the coke oven flue gas treatment, and mainly describes the connection structure between each device;

[0031] Its essence is to transfer the coke oven flue gas treated in the previous treatment equipment to the next treatment equipment. Conventionally, it is only based on a combination of structures such as a valve body or a fan, but in the present invention, the water tank sleeve 1 is used as a key structure. Its essence is that when the flue gas discharged from one of the treatment equipment is directly injected into the independent water tank 101 from the gas injection port 3, and a certain amount of pure water is injected into the independent water tank 101, the coke oven flue gas and the pure water are mixed, which can directly filter out the dust therein on the one hand, and can also cool the coke oven flue gas on the other hand;

[0032] After the coke oven smoke is mixed with the pure water and initially treated, the initially treated coke oven smoke can be discharged through the gas-liquid double-way pipe 5, wherein the gas-liquid double-way pipe 5 is essentially two through pipes, one of which is used as a smoke exhaust structure, and the other is used as a structure for replenishing pure water, so that the initially treated coke oven smoke is discharged from the gas-liquid double-way pipe 5;

[0033] However, it should be noted that: in the initial state, each independent water tank 101 is not completely filled with pure water, and the upper part of the independent water tank 101 can also be used as a gas tank for coke oven flue gas, so that the height of the pure water liquid level in the independent water tank 101 can be controlled to reversely control the discharge mode of the coke oven flue gas from the independent water tank 101;

[0034] Refer to this Figure 2 , a plurality of independent water tanks 101 are arranged in the overall water tank cover 1, and the independent water tanks 101 in every two adjacent positions are connected through the liquid level U-shaped tube 4. In essence, each independent water tank 101 can be connected through the liquid level U-shaped tube 4, but when the pure water is submerged above the lower end of the liquid level U-shaped tube 4, each two independent water tanks 101 can be directly blocked;

[0035] In essence, the coke oven flue gas is blocked to avoid the connection between the coke oven flue gas in every two independent water tanks 101. However, combined with the liquid level U-tube 4 and the liquid level balance principle, when the liquid level of the pure water in one of the independent water tanks 101 is higher than the liquid level of the pure water in the adjacent independent water tank 101, under the action of the liquid level balance principle, the pure water in one of the independent water tanks 101 will automatically flow into the independent water tank 101 in the adjacent position.

[0036] Embodiment 2: Supplementary explanation is given by combining the independent water tank 101 in Embodiment 1 with the principle of liquid level balance;

[0037] In conjunction with the technical content of the first embodiment, it is necessary to directly limit the liquid level height in the independent water tank 101 according to the setting mode of each independent water tank 101, and in order to ensure the flow process of pure water in each independent water tank 101;

[0038] And combined Figure 2For explanation, each independent water tank 101 is numbered in sequence in a clockwise direction. For example, the independent water tank 101 in the upper left position is numbered 1, and the liquid level height of the independent water tank 101 numbered 1 is ensured to be higher than the liquid level height of the independent water tank 101 numbered 2, and the setting height of the liquid level U-shaped tube 4 needs to be limited according to actual conditions;

[0039] Its essence is to ensure that the purified water in the independent water tank No. 1 naturally flows into the independent water tank No. 2 101. However, it needs to be further explained that when the purified water in the independent water tank No. 1 101 continues to flow out, it will directly affect the liquid level balance principle of the independent water tanks 101 in the two adjacent positions;

[0040] Based on the above, the following actions are proposed:

[0041] Action 1: When the gas injection pipe 3 in each independent water tank 101 continuously injects coke oven flue gas, and the pure water in each independent water tank 101 is interconnected, water can also be replenished synchronously through the gas-liquid dual-pass pipe 5 in the independent water tank 101, or part of the water can be continuously discharged through the drainage pipe at the lower side of the independent water tank 101. The purpose is to maintain the liquid level height in each independent water tank 101, thereby indirectly limiting the gas tank volume retained by the independent water tank 101, and the gas tank can be used as a temporary storage space for coke oven flue gas;

[0042] Action 2: Combined with action 1, the liquid level inside each independent water tank 101 can be gradually reduced or gradually increased in a step-by-step manner, so as to directly limit the flow direction of the purified water. However, the liquid level in the independent water tank 101 can be further limited. Specifically, one of the independent water tanks 101 can simultaneously obtain the replenishment process of purified water in two independent water tanks 101, or one of the independent water tanks 101 can obtain the replenishment process of purified water in one independent water tank 101, but it will also inject purified water into another independent water tank 101 due to the principle of liquid level balance.

[0043] Action 3: Regarding action 1, it should be noted that: when the liquid level of the purified water in one of the independent water tanks 101 continues to rise, a certain amount of purified water can be discharged through the drainage pipe at the lower side of the corresponding independent water tank 101, and the purified water can be replenished to another independent water tank 101 that needs purified water through a water pump or other structure;

[0044] Action 4: Because the key technical point in the present invention lies in the liquid level height in each independent water tank 101, it is necessary to monitor the liquid level height in each independent water tank 101 in real time. However, because the coke oven flue gas added to each independent water tank 101 generates a large number of bubbles in the pure water inside, conventional liquid level sensors are not suitable for the present invention. For this, it is necessary to use the air pipe assembly 9 in the central air tank sleeve 7 to indirectly feedback the liquid level height in each independent water tank 101. Its essence is based on the multiple balloons on the air pipe assembly 9. The water in the independent water tank 101 will produce a corresponding value of pressure on the balloon, and each of the balloons is equidistantly arranged along the height direction of the independent water tank 101. When the multiple balloons are under pressure, the volume of the balloons is compressed less, so the pressure of the overall air pipe assembly 9 shows an increasing trend. For this, the pressure control assembly 6 serves as the pressure detection structure of the air pipe assembly 9, thereby indirectly feeding back the liquid level height in each independent water tank 101.

[0045] Action 5: Reference Figure 5 To explain, in the initial state, a certain amount of gas is added to the pressure diffuser rubber sleeve 8 to make it expand to a certain extent, but when gas is continued to be added to the pressure diffuser rubber sleeve 8 through the pressure compensation pipe 2, it continues to expand. The purpose is to actively change the liquid level height in the independent water tank 101 without performing water injection and drainage actions.

[0046] Embodiment 3: Combined with the relevant contents in Embodiment 1 and Embodiment 2, the pressure control assembly is supplemented with the following description:

[0047] The pressure control assembly 6 not only feeds back the liquid level height in the independent water tank 101, but also serves as a control structure during the operation of the overall structure. Its essence is to establish a linkage control system associated with the independent water tank 101 to perform water injection, drainage, and air replenishment. The linkage control system first collects the liquid level height in each independent water tank 101, and directly obtains the processing state coefficient in each processing device. The processing state coefficient in the processing device is mainly used to indicate the maximum receiving amount of the associated coke oven flue gas when each coke oven flue gas processing device processes the coke oven flue gas, and the processing state coefficient is directly related to the process parameters, which will not be explained in detail in the present invention;

[0048] When the amount of flue gas required by one of the coke oven flue gas treatment devices is low, the liquid level in the independent water tank 101 at the corresponding position can be reduced to increase the volume of the gas tank in the independent water tank 101, so that part of the coke oven flue gas can be stored and the amount of flue gas input to the next coke oven flue gas treatment device can be reduced; otherwise, the liquid level in the independent water tank 101 at the corresponding position can be increased;

[0049] However, in actual situations, the flue gas volume required by each coke oven flue gas treatment device fluctuates continuously, and for this purpose, each independent water tank 101 needs to be connected in series, specifically through the liquid level U-shaped tube 4. Because each liquid level U-shaped tube 4 is in an inverted state, and the two ends of the liquid level U-shaped tube 4 are respectively placed below the pure water level, the coke oven flue gas in the two independent water tanks 101 will not be directly connected, but the pure water inside the two will be connected under the principle of liquid level balance.

[0050] The essence of this is to ensure that the liquid level in one of the independent water tanks 101 is higher than the liquid level in another independent water tank 101, so that part of the pure water will flow back into the other independent water tank 101. In this state, the drainage action or water injection action can continue to be performed on one of the independent water tanks 101, the purpose of which is to further change the liquid level in each independent water tank 101;

[0051] In combination with the above content, it is explained that: without considering the water filling action or drainage action performed in the independent water tank 101, the flow process of the pure water in the two independent water tanks 101 is directly related to the liquid level heights of the two independent water tanks. XH represents the liquid level height in each independent water tank 101, and i represents the number of each independent water tank 101, so that XH can be generated. i +Ht i ≠XH i+1 +Ht i+1 The non-equilibrium formula, where Ht i+1 It is used to indicate the drainage volume per unit time of the independent water tank 101 when performing the drainage action or the water injection volume per unit time when performing the water injection action, and XH i It can be obtained by converting the pressure value in the air pipe assembly 9;

[0052] But combined with the above XH i +Ht i ≠XH i+1 +Ht i+1 The non-equilibrium formula further illustrates that: the two actions of air replenishment or air release performed by the outward-expanding rubber sleeve 8 can be used to independently change the liquid level height in the independent water tank 101. Its essence is to further actively interfere with the above-mentioned non-equilibrium formula. Its overall content is to change the flow state of coke oven smoke in each processing equipment by controlling the liquid level height of the independent water tank 101, so as to ensure that the processing capacity of each processing equipment reaches the optimal state.

[0053] In summary, the flow process of flue gas in the coke oven flue gas treatment process is improved, specifically by utilizing the liquid level balance principle. The coke oven flue gas is directly injected into one of the independent water tanks and contacts with the water in the independent water tank to achieve the purpose of cooling and dust removal. The key is to use the empty tank / gas tank reserved in each independent water tank as a temporary storage space for coke oven flue gas, and further utilize the setting method of the liquid level U-shaped tube;

[0054] And by changing the liquid level height in the independent water tank, the relevant parameters of the coke oven flue gas discharged from the independent water tank can be indirectly controlled. Specifically, active intervention is carried out in conjunction with the working status of the coke oven flue gas treatment equipment. For this, an associated linkage control system is established to actively interfere with the air replenishment action, air release action, water injection action, and drainage action. Each independent water tank can interact to balance the process parameters in multiple treatment equipment.

[0055] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-reaction chamber coordinated treatment device for purifying and discharging coke oven flue gas, comprising a water silo jacket (1), characterized in that: The water tank cover (1) has a plurality of independent water tanks (101) formed inside, the independent water tanks (101) being arranged in a circular array along the center point of the water tank cover (1), a central air tank cover (7) corresponding to the independent water tank (101) being formed at the center point inside the water tank cover (1), and a pressure control assembly (6) corresponding to the central air tank cover (7) being installed at the center point of the upper end of the water tank cover (1); A plurality of groups of liquid level U-shaped tubes (4) are arranged between two adjacent independent water tanks (101), and a gas-liquid dual-pass tube (5) and a drainage pipe are respectively provided at the upper and lower ends of the independent water tank (101). A pressure-boosting tube (2) and an air injection tube (3) are installed at the position of the water tank sleeve (1) corresponding to the independent water tank (101), the end of the air injection tube (3) is open and extends to the inner bottom end of the independent water tank (101), and a pressure-expanding rubber sleeve (8) is installed at the end of the pressure-boosting tube (2).

2. The multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission according to claim 1 is characterized in that: An air pipe assembly (9) corresponding to the independent water tank (101) is installed in the central air tank sleeve (7); the air pipe assembly (9) is arranged in a vertical direction and a plurality of balloons are installed on the air pipe assembly (9); the balloons are linearly equidistantly arranged in a height direction of the independent water tank (101), and the balloons extend into the independent water tank (101).

3. The multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission according to claim 1 is characterized in that: Pure water is injected into the independent water tank (101), and the liquid level of the pure water is higher than the end position of the gas injection pipe (3).

4. The multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission according to claim 1 is characterized in that: The top end position of the liquid level U-shaped tube (4) is higher than the upper surface of the water bin cover (1) or lower than the top end position of the inner wall of the water bin cover (1).

5. The multi-reaction chamber coordinated treatment device for coke oven flue gas purification and emission according to claim 4 is characterized in that: The distances between the two ends of the liquid level U-shaped tube (4) and the bottom end of the inner wall of the independent water tank (101) are not equal.

6. A multi-reaction chamber coordinated treatment device for purifying and discharging coke oven flue gas according to any one of claims 1 to 5, characterized in that: The multi-reaction chamber collaborative processing device includes the following parts during operation: S1: performing an air filling action or an air releasing action on the outwardly expanding rubber sleeve (8) through the pressure compensating pipe (2), performing a water filling action or a water discharge action on the inside of the independent water tank (101) through the air-liquid dual-pass pipe (5) and the drainage pipe, and performing a flow conversion action on the independent water tanks (101) in two adjacent positions through the liquid level U-shaped pipe (4); S2: The pressure control assembly (6) is used to record the pressure value in the air pipe assembly (9) and to feed back the liquid level height in each independent water tank (101), and a linkage control system for air replenishment action, air release action, water injection action, water discharge action and flow conversion action is established in the pressure control assembly (6). The linkage control system is based on the liquid level height in the independent water tank (101) and the treatment state coefficient in each coke oven flue gas treatment device, and establishes a non-equilibrium formula in the independent water tank (101) at every two adjacent positions, and controls the flow conversion action by controlling the air replenishment action, air release action, water injection action and water discharge action.

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