Delayed coking coke storage pool unorganized emission waste gas control and collaborative treatment system

Abstract

The present invention discloses a system for controlling and coordinating the unorganized emission of waste gas from a delayed coking coke storage tank. The fully enclosed system of the coke storage tank wraps the coke storage tank, sewage treatment tank, top coke grabbing crane, open-air trestle of the crane, automobile transportation channel and loading hopper in the delayed coking process, including a coke storage tank solar film enclosed system, a ventilation system in the shed, and a dust suppression system for grabbing and unloading coke in the shed; the coke storage tank solar film enclosed system is a membrane structure shed; the dust suppression system for grabbing and unloading coke in the shed includes a dust suppression spray cannon, which is used to spray natural plant deodorizing liquid to coke powder in the shed when grabbing and unloading coke; the waste gas collection system includes an exhaust hood, a resistance balancer, an electric air volume regulating valve, and a waste gas collection pipe network; the waste gas treatment system includes a fan, a cooling tower, a demister, and a spray tower. The present invention solves the problem of unorganized emission of waste gas from delayed coking, has good waste gas control effect, covers a wide area, and does not affect the normal progress of the main production process.

Description

Technical Field

[0001] The present invention belongs to the technical field of control and treatment of unorganized emissions of atmospheric pollutants. More specifically, the present invention relates to a control and coordinated treatment system for unorganized emission of waste gas generated in a coke storage tank in a delayed coking process in the petrochemical industry. Background Art

[0002] The delayed coking process is a thermal cracking process that converts vacuum residue oil into lighter oil products and coke. During the production process, the coke remaining in the coke tower is unloaded into the coke pool by high-pressure hydraulic coke cutting. The cut coke and coke cutting water are discharged into the coke storage pool, and then the top crane is used for material grabbing and subsequent loading.

[0003] Delayed coking is one of the main production processes of coking plants in my country's petrochemical industry. Currently, most of them adopt an open treatment process. During the treatment process, mixed gases containing sulfides, organic volatiles, a small amount of dust, and a large amount of water vapor are volatilized, which makes the air around the coke storage tank more polluted and puts a certain pressure on the surrounding environment. Especially today when environmental protection standards are gradually improved, how to solve this problem has become a difficult problem that most domestic petrochemical plants need to solve urgently.

[0004] Currently, the more effective solution in China is the closed decoking technology developed by Sinopec, which converts the existing open water tanks and conveying equipment into closed equipment. Although this method can solve the problem of unorganized exhaust gas emissions, it is large in scale, high in investment cost, long in transformation cycle, and high in system maintenance cost. In addition, the particle size of the coke powder produced after the transformation is too fine, which has a certain impact on the product price and is not accepted by most domestic petrochemical plants. Summary of the invention

[0005] In view of the above defects of the prior art and the improvement needs of customers, the present invention provides a control and coordinated management system for the unorganized emission of waste gas from delayed coking coke storage pools, which aims to effectively solve the problem of unorganized emission of waste gas from delayed coking while achieving the characteristics of high safety, short construction period, low cost, stable operation, high degree of automation, low maintenance cost, and comprehensive design range without affecting the existing production process.

[0006] To achieve the above object, according to one aspect of the present invention, a system for controlling and coordinating the unorganized exhaust gas emitted from a delayed coking coke storage tank is provided, comprising:

[0007] The fully enclosed system of the coke storage tank wraps the coke storage tank, sewage treatment tank, top coke grabbing crane, open-air trestle of the crane, automobile transportation channel next to the coke storage tank, and loading hopper in the delayed coking process in the fully enclosed system; the fully enclosed system includes a coke storage tank solar film enclosed system, a ventilation system in the shed, and a coke grabbing and unloading dust suppression system in the shed; the coke storage tank solar film enclosed system is a membrane structure shed, including a PVDF membrane and a carbon steel skeleton supporting the membrane; the ventilation system in the shed is provided with exhaust points on the top according to the different amounts of waste gas generated in each area of ​​the delayed coking coke storage tank during the coke discharge, coke cooling, and coke grabbing stages, and accurately distributes the air volume at each point; doors and windows are provided at the end away from the coke chute and the entrance and exit of the loading vehicle; the coke grabbing and unloading dust suppression system in the shed includes dust suppression spray fog cannons, which are arranged around the coke storage tank and equipped with a dosing system to spray natural plant deodorizing liquid onto the coke powder in the shed;

[0008] An exhaust gas collection system, the exhaust gas collection system includes an exhaust hood, a resistance balancer, an electric air volume regulating valve, and an exhaust gas collection pipe network; the exhaust gas collection pipe network is arranged on the top and side of the closed membrane structure greenhouse, and an exhaust hood is set above the coke chute and on the top of the membrane structure greenhouse after the tank body is closed. The resistance balance in each pipeline is adjusted by the electric air volume regulating valve and the resistance balancer to ensure that each point can work according to the designed air volume when the system is running;

[0009] An exhaust gas treatment system, the exhaust gas treatment system comprising a fan, a cooling tower, a demister, a spray tower, a circulation pump, a dosing pump, a stirring pump, a liquid storage tank, a deodorizing liquid preparation concentration detector, a gas sulfur content concentration detector, and an electrical control system;

[0010] The exhaust gas collection network transports the exhaust gas to the cooling tower, demister, spray tower, demister in sequence through the fan, and then to the inlet of the heating furnace blower.

[0011] According to an embodiment of the present invention, the control and coordinated management system for unorganized exhaust gas emissions from delayed coking coke storage pools also includes an intelligent overhead crane coke grabbing system, wherein the intelligent overhead crane coke grabbing system is provided with cameras, video monitors, and positioning and identification devices around the coke pool and at the bottom of the crane; a weighing instrument is provided on the trolley that controls the grab bucket, and an additional fixed-point coke grabbing and unloading module and a frequency converter are provided in the electrical control cabinet located above the overhead crane; a three-dimensional laser scanner is installed above the overhead crane, and an intelligent control system, an operating console, and a display are provided in the ground control room, and the operating console remotely operates the crane by infrared; the video monitor feeds back the situation in the coke pool to the ground operating room in real time; the three-dimensional laser scanner feeds back the accumulation of coke in the coke pool to the intelligent control system in real time, and displays it on the display in the ground control room, and the intelligent control system controls the overhead crane through programming to automatically grab the coke at a place where the material is high, and transports it to a designated place to unload the coke.

[0012] According to an embodiment of the present invention, the control and coordinated treatment system for unorganized exhaust gas emissions from delayed coking coke storage tanks also includes an automatic cleaning system for loading vehicles, which includes a ground sensing coil sensor, a high-pressure impact fan-shaped nozzle, a water supply network, a water supply pump, a sewage pool, and a sewage circulation treatment device; the ground sensing coil sensor is arranged at the exit of the membrane structure greenhouse, and the ground sensing coil sensor is arranged at the front of the lane. When a vehicle passes by, the ground sensing coil sensor sends a signal to the control system to control the water supply pump to start and clean the vehicle through the high-pressure impact fan-shaped nozzle; the sewage after cleaning flows into the sewage pool and the sewage circulation treatment equipment in turn.

[0013] According to an embodiment of the present invention, the dosing system includes a water supply and drainage pipeline, a water supply pump, a stirring pump, a water storage tank, and a butterfly valve; a stirring pump is arranged inside the liquid storage tank; the deodorizing liquid is sent to the dust suppression mist cannon through the water supply pump to cover the coke powder; and insulation and electric heating are arranged on the liquid storage tank.

[0014] According to an embodiment of the present invention, the focus storage tank solar film enclosed system selects an inverted membrane structure with the membrane on the inside and the steel structure frame on the outside when the reserved space on both sides is sufficient, depending on the different environmental characteristics on site; and selects a skeleton membrane structure with the membrane on the outside and the steel structure frame on the inside when the reserved space on both sides is insufficient.

[0015] According to an embodiment of the present invention, the fan adopts a variable frequency configuration.

[0016] According to an embodiment of the present invention, a blower and a wiper are provided on the camera.

[0017] According to an embodiment of the present invention, the sewage circulation treatment equipment integrates the natural sedimentation area, the inclined tube sedimentation area, the quartz sand filtration area, the clean water area, the water supply pump, the electric control cabinet and the control system into one device; the sludge sedimentation tank is set on the ground, and the bottom of the tank is connected to the sewage pipe.

[0018] According to an embodiment of the present invention, the setting mode of the fixed-point focus capture and unloading module is: when defocusing, fixed-point focus capture and fixed-point focus unloading are used for control, and the overhead crane directly goes to several designated points to capture and unload focus; when defocusing is completed, it switches to the intelligent recognition focus capture and fixed-point focus unloading mode.

[0019] According to an embodiment of the present invention, the spray tower is connected to a biological liquid storage tank through a dosing pump. The biological liquid storage tank is used to dilute the natural plant deodorizing liquid. A mixing concentration detector is installed on the biological liquid storage tank; a gas sulfur content concentration detector is set on the pipeline behind the spray tower.

[0020] In general, compared with the prior art, the above technical solution conceived by the present invention can achieve the following beneficial effects.

[0021] (1) A fully enclosed solution is adopted to enclose the coke storage tank, sewage treatment tank, top coke grabbing crane, open-air trestle of the crane, car transportation channel next to the coke storage tank, loading hopper, etc. in a closed system to ensure that all processes are carried out in a semi-enclosed space, prevent waste gas from overflowing, and carry out organized control of waste gas generation.

[0022] (2) PVDF membrane is selected as the sealing material. It has the characteristics of high thermal hardness, not easy to crack, high cost performance, light weight, strong light transmittance, high self-cleaning ability, and professional anti-corrosion properties. It is not only beautiful in appearance and practical, but also has a service life of not less than ten years.

[0023] (3) According to the actual situation on site, you can choose to use an inverted membrane structure or a skeleton membrane structure for full enclosure. In the inverted membrane structure, because the membrane is on the inside and the steel structure skeleton is on the outside, the high-temperature and humid exhaust gas generated by the delayed coking coke storage tank will only come into contact with the specially treated membrane instead of the steel structure skeleton. Therefore, it can avoid the corrosion of the steel structure by the exhaust gas and effectively extend the service life of the entire closed system. The skeleton membrane structure has a smaller reserved space on both sides. Compared with the traditional color steel plate structure, it has stronger corrosion resistance, less steel structure and longer service life.

[0024] (4) Use ventilation technology in the shed, place most of the exhaust points at the top and the coke chute, and set up several doors and windows at the entrance and exit of the loading vehicle at the end away from the coke chute to achieve ventilation in the shed.

[0025] (5) The dust suppression technology for coke grabbing and unloading in the greenhouse is adopted. Through the fog cannon, the prepared natural plant deodorizing liquid is sprayed onto the coke powder in the greenhouse during coke grabbing and unloading to achieve the purpose of dust suppression.

[0026] (6) Adopt the technology of precise and rational distribution of air volume. According to the different amounts of waste gas generated in each area of ​​the delayed coking coke storage pool during the stages of coke discharge, coke cooling, and coke grabbing, several exhaust points are unevenly set on the top to accurately distribute the air volume at each point, and collect the waste gas from each area in the shed in a targeted manner, thereby realizing the rational distribution of air volume.

[0027] (7) The dynamic balancing technology of the exhaust gas collection pipe network system is adopted, which uses electric air volume control valves and resistance balancers to adjust the resistance balance in each pipe to ensure that when the system is running, each point can work according to the designed air volume.

[0028] (8) Use waste gas treatment technology. First, the waste gas is transported to the cooling tower through a fan to separate most of the water vapor in the waste gas; then the sulfide in the waste gas is removed using the prepared natural plant deodorizing liquid; finally, the remaining waste gas is sent to the blower inlet of the dead heating furnace and enters the heating furnace together with the air for incineration.

[0029] (9) Using natural plant deodorant liquid, the characteristics of which are that the natural plant deodorant liquid has stable chemical and physical properties, is non-toxic, non-explosive, non-flammable, and non-irritating to the skin, can come into contact with sulfide molecules and decompose rapidly, and the decomposition products are carbon dioxide, water, amino acids and other derivatives, which will not cause secondary pollution to the environment; the waste liquid after absorption can also be directly discharged into the factory's sewage circulation system for recycling treatment, and will not cause adverse effects on the existing sewage circulation system.

[0030] (10) The fan adopts variable frequency configuration. When coking, the fan runs at full speed; at other time periods, it is adjusted to low speed, which can greatly save the investment in waste gas treatment equipment and operation and maintenance costs.

[0031] (11) The remaining waste gas after desulfurization is sent to the blower inlet of the heating furnace and enters the heating furnace for incineration along with the air, so as to achieve standard emission.

[0032] (12) Renovate and upgrade the existing overhead crane, upgrade the electrical control system, and install weighing meters, infrared cameras, laser scanners, cameras and positioning recognition devices to realize the intelligent control function of the overhead crane.

[0033] (13) When defocusing, the system uses fixed-point focus capture and fixed-point defocusing methods for control; after defocusing, the system switches to intelligent recognition focus capture and fixed-point defocusing mode to improve the intelligent accuracy of driving.

[0034] (14) After the coke is unloaded, the accumulation of coke in the coke pool is fed back to the control system in real time using three-dimensional laser scanning imaging technology and displayed on the computer monitor in the ground control room. The overhead crane is then programmed to automatically grab the coke from the high pile and finally transport it to the designated location for unloading, ensuring uniform intelligent coke grabbing in the coke pool.

[0035] (15) Several video monitors are installed around the coke pool and at the bottom of the crane to provide real-time feedback of the situation in the coke pool to the ground operation room, facilitating real-time monitoring by operators.

[0036] (16) Each monitoring device is equipped with a blower and a wiper to prevent water vapor and a small amount of dust in the exhaust gas from adhering to the camera and affecting the accuracy of the monitoring system.

[0037] (17) A weighing instrument is added to the trolley that controls the grab bucket. Each time coke is grabbed, the weight of the grabbed coke is fed back to the ground control room in real time. The weight can be accumulated and stacked to form a report, which makes it easier for operators to accurately grasp the amount of coke grabbed and for managers to further control the coke powder output of the delayed coking process.

[0038] (18) The natural sedimentation area, inclined tube sedimentation area, quartz sand filtration area, clean water area, water supply pump, electric control cabinet and control system are all integrated into one device, realizing the equipmentization of the engineering project.

[0039] (19) The sewage recycling treatment equipment can be fully installed in the manufacturing workshop and debugged individually, and then transported to the project site as a whole. After being connected with other equipment, it can be tested and debugged in conjunction, which reduces the workload of civil engineering on the project site and shortens the overall project construction period.

[0040] (20) The sludge sedimentation tank is placed on the ground. The sludge at the bottom of the tank can be discharged directly through the sewage pipe under the action of water pressure, making it convenient for operators to collect and process the sludge.

[0041] (21) In addition to supplying water to clean the pipes, the variable frequency water supply pump can also be switched to backwash the quartz sand filter layer, thus achieving multiple uses for a single device and improving equipment utilization.

[0042] (22) The sewage is firstly discharged into the sewage pool by the sewage recycling treatment equipment, and then is pumped to the natural sedimentation area of ​​the integrated equipment by the sludge pump, and then flows into the inclined tube sedimentation area, and then enters the quartz sand filtration area to complete the filtration of particulate matter, and finally enters the clean water area for standby use, truly integrating the entire sewage recycling function into one device.

[0043] (23) The present invention can effectively solve the problem of unorganized emission of waste gas from delayed coking. It not only has good waste gas control and treatment effects, high safety, high cost performance, wide coverage area, stable operation, and high degree of automation, but also does not change the original production process, has a short renovation period, and does not affect the normal progress of the main production process, thus meeting the requirements of environmental protection and industrial hygiene. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a diagram of the solar film enclosed system of the focus storage tank.

[0045] Figure 2 This is a diagram of the coke capture, unloading and dust suppression system within the shed.

[0046] Figure 3 This is a diagram of the exhaust gas treatment system.

[0047] Figure 4 This is a diagram of the intelligent overhead crane focusing system.

[0048] Figure 5 It is a flow chart of the automatic focusing program after laser scanning.

[0049] Figure 6 Vehicle washing system layout diagram.

[0050] Figure 7 It is a flow chart of vehicle washing system.

[0051] In the figure: 1-1- membrane structure; 2- dust suppression fog cannon; 3- liquid storage tank; 4- water supply pump; 5- water supply and drainage pipeline; 6- overhead crane; 7- ground operation room; 8- coke storage tank; 9- natural sedimentation area; 10- inclined pipe sedimentation area; 11- equipment room; 12- clean water area; 13- quartz sand filtration area; 14- vehicle washing area; 15- sewage tank. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0053] The control and coordinated treatment system for unorganized exhaust gas emissions from delayed coking coke storage tanks includes a fully enclosed system for the coke storage tanks, an exhaust gas collection system, an exhaust gas treatment system, an intelligent overhead crane coke grabbing system, and an automatic cleaning system for loading vehicles.

[0054] The fully enclosed system of the coke storage tank wraps the coke storage tank, sewage treatment tank, top coke grabbing crane, open-air trestle of the crane, car transportation channel next to the coke storage tank, and loading hopper in the delayed coking process, ensuring that all delayed coking processes are carried out in a semi-enclosed space, preventing waste gas from overflowing, and carrying out organized control of waste gas generation.

[0055] The fully enclosed system of the coke storage pool includes the coke storage pool solar film enclosing system, the ventilation system in the shed, and the coke catching and unloading dust suppression system in the shed.

[0056] The solar membrane enclosed system of the focus storage tank is a membrane structure greenhouse, including a membrane made of PVDF material and a carbon steel frame supporting the membrane. According to the different environmental characteristics on site, when there is enough space reserved on both sides, you can choose an inverted membrane structure with the membrane on the inside and the steel structure frame on the outside; when there is not enough space reserved on both sides, you can choose a skeleton membrane structure with the membrane on the outside and the steel structure frame on the inside.

[0057] The membrane of the inverted membrane structure is on the inside and the steel structure skeleton is on the outside. The waste gas generated by delayed coking only contacts the membrane material but not the steel structure, which can effectively prevent the steel structure from being corroded and delay the service life of the entire closed equipment.

[0058] The skeleton membrane structure has a smaller reserved space on both sides. Compared with the traditional color steel plate structure, it has stronger corrosion resistance, uses less steel structure and has a longer service life.

[0059] The ventilation system in the shed is designed with exhaust vents, doors, windows, and uniform airflow in the shed. According to the different amounts of waste gas generated in each area of ​​the delayed coking coke storage pool during the coke discharge, coke cooling, and coke grabbing stages, exhaust points are set at the top to accurately distribute the air volume at each point. At the end away from the coke chute, doors and windows are set at the entrance and exit of the loading vehicles to achieve ventilation in the shed.

[0060] The dust suppression system for grabbing and unloading coke in the shed includes a dust suppression spray cannon 2, which is used to spray natural plant deodorizing liquid to the coke powder in the shed when grabbing and unloading coke; it also includes a water supply and drainage pipeline 5, a water supply pump 4, a stirring pump, a liquid storage tank 3, a butterfly valve, a dust suppression spray cannon 2, and insulation and electric heating. The natural plant deodorizing liquid is first diluted inside the liquid storage tank 3, stirred evenly by the stirring pump, and then sent to the dust suppression spray cannon 2 through the water supply pump, covering the coke powder to play a role in dust suppression; insulation and electric heating are set on the liquid storage tank 3 to prevent freezing due to low temperature in winter.

[0061] The dust suppression system for coke grabbing and unloading in the shed uses a fog cannon to spray a modulated natural plant deodorizing liquid onto the coke powder in the shed during coke grabbing and unloading, thereby achieving the purpose of dust suppression.

[0062] The exhaust gas collection system includes an exhaust hood, a resistance balancer, an electric air volume regulating valve, and an exhaust gas collection pipe network; the exhaust gas collection pipe network is arranged on the top and side of the closed membrane structure greenhouse, an exhaust hood is arranged above the coke chute and on the top of the membrane structure greenhouse after the tank body is closed, an electric air volume regulating valve is arranged on the exhaust gas collection pipe at the coke chute, and a resistance balancer is arranged in the exhaust gas collection pipe network, and the electric air volume regulating valve and the resistance balancer are used to adjust the resistance balance in each pipe to ensure that each point can work according to the designed air volume when the system is running;

[0063] The waste gas treatment system includes a fan, a cooling tower, a demister, a spray tower, a circulation pump, a dosing pump, a stirring pump, a liquid storage tank, a deodorizing liquid preparation concentration detector, a gas sulfur content concentration detector, and an electrical control system.

[0064] The exhaust gas collection network transports the exhaust gas to the cooling tower, demister, spray tower, demister in sequence through the fan, and then to the inlet of the heating furnace blower.

[0065] The exhaust gas collection system is designed with precise and reasonable distribution of system air volume and dynamic balance of the exhaust gas collection pipe network system.

[0066] The precise and rational distribution of system air volume includes the determination of the total system air volume, the number and location of exhaust points, and the air volume at each point.

[0067] The spray tower is connected to a biological liquid storage tank through a dosing pump. The biological liquid storage tank is used to dilute the natural plant deodorizing liquid. A mixing concentration detector is installed on the biological liquid storage tank. A gas sulfur content concentration detector is arranged on the pipeline behind the spray tower.

[0068] The waste gas treatment system first transports the waste gas to the cooling tower through a fan to separate most of the water vapor in the waste gas; then uses the prepared natural plant deodorizing liquid to remove the sulfide in the waste gas; finally, the remaining waste gas is sent to the blower inlet of the heating furnace and enters the heating furnace together with the air for incineration.

[0069] The remaining waste gas after desulfurization is sent to the blower inlet of the heating furnace and enters the heating furnace together with the air for incineration to achieve standard emissions.

[0070] The natural plant deodorant liquid has stable chemical and physical properties, is non-toxic, non-explosive, non-flammable, and non-irritating to the skin. It can come into contact with sulfide molecules and decompose rapidly, and the decomposition products are derivatives such as carbon dioxide, water, and amino acids, which will not cause secondary pollution to the environment. The waste liquid after absorption can also be directly discharged into the factory's sewage circulation system for recycling treatment, and will not cause adverse effects on the existing sewage circulation system.

[0071] The fan adopts a variable frequency configuration. When the focus is released, the fan runs at full speed; when the focus is released, the fan is adjusted to run at a low speed.

[0072] The intelligent overhead crane coke grabbing system is an intelligent transformation of the coke grabbing overhead crane and the control system.

[0073] The intelligent transformation of the coking crane is to transform and upgrade the existing crane body, upgrade the electrical control system, and add a weighing meter, infrared camera, laser scanner, camera and positioning recognition device to realize the intelligent control function of the crane.

[0074] The intelligent overhead crane coke grabbing system has cameras, video monitors, and positioning identification devices installed around the coke storage pool 8 and at the bottom of the crane; a weighing instrument is installed on the trolley that controls the grab bucket, and a fixed-point coke grabbing and unloading module and a frequency converter are installed in the electrical control cabinet located above the overhead crane 6; a three-dimensional laser scanner is installed above the overhead crane 6, and an intelligent control system, an operating table, and a display are provided in the ground control room 7, and the operating table can remotely operate the crane by infrared; the video monitor feeds back the situation in the coke storage pool to the ground operating room in real time; the three-dimensional laser scanner feeds back the accumulation of coke in the coke storage pool 8 to the intelligent control system in real time, and displays it on the display of the ground control room 7, and then the intelligent control system controls the overhead crane 6 through programming to automatically grab coke from the place where the material is high, and finally transports the coke to the designated place for unloading, thereby ensuring the uniformity of intelligent coke grabbing in the coke pool.

[0075] The setting mode of the fixed-point focusing and unloading module is: when defocusing, the fixed-point focusing and fixed-point unloading modes are used for control, and the overhead crane 1 directly goes to several designated points to focus and unload; after the defocusing is completed, it switches to the intelligent recognition focusing and fixed-point unloading mode.

[0076] The automatic focus process after laser scanning is as follows:

[0077] (1) Press the automatic operation button on the automatic operation console to determine whether to grab coke at a fixed point or unload at a fixed point;

[0078] (2) If yes, the subroutine of fixed-point coke grabbing and fixed-point unloading is carried out; otherwise, the subroutine of laser scanning is carried out over the coke storage pool;

[0079] (3) Select the high point position, move to the high focus position, calculate the number of focus attempts, and automatically focus;

[0080] (4) Defocusing signal at 1# defocusing position, weighing at 1# defocusing position, defocusing completed, calculating the number of coke grabbing times, if the number of coke grabbing times is insufficient, return to step (3);

[0081] (5) When the number of focus captures is sufficient, return to step (1);

[0082] (6) Defocusing signal at 2# defocusing position, weighing at 2# defocusing position, defocusing completed, calculating the number of coke grabbing times, if the number of coke grabbing times is insufficient, return to step (3);

[0083] (7) When the number of focus captures is sufficient, return to step (1);

[0084] (8) 3# unloading position unloading signal, weighing at 3# unloading position, unloading is completed, and the number of coke grabbing times is calculated. If the number of coke grabbing times is insufficient, return to step (3);

[0085] (9) If the number of focus captures is sufficient, return to step (1).

[0086] Carriage positioning method: Gray busbar + absolute encoder.

[0087] Lifting positioning method: absolute encoder.

[0088] Focus detection and positioning method: laser scanning three-dimensional positioning.

[0089] The setting of the video monitor facilitates real-time monitoring by operators in the ground control room. In special circumstances, the system can be switched to manual operation mode to perform real-time control in the ground control room, thus improving the safety of operators.

[0090] The cameras of each monitoring device are equipped with blowers and wipers to prevent water vapor and a small amount of dust in the exhaust gas from adhering to the camera and affecting the accuracy of the monitoring system.

[0091] A weighing instrument has been added to the trolley that controls the grab bucket. Each time coke is grabbed, the weight of the grabbed coke will be fed back to the ground control room in real time. The weight can be accumulated and superimposed to form a report, which makes it convenient for the operator to accurately grasp the amount of coke grabbed, and also facilitates the management personnel to further control the coke powder output of the delayed coking process.

[0092] The automatic cleaning system for loading vehicles includes a ground sensing coil sensor, a high-pressure impact fan-shaped nozzle, a water supply network, a sewage pool, and sewage circulation treatment equipment.

[0093] A ground sensing coil sensor, a high-pressure impact fan-shaped nozzle, a water supply network, a water supply pump, a sewage pool 15, and a sewage circulation treatment device are installed at the exit of the membrane structure 1 greenhouse; the ground sensing coil sensor is arranged at the front of the lane. When a vehicle passes by, the ground sensing coil sensor sends a signal to the control system to control the water supply pump to start and clean the vehicle through the high-pressure impact fan-shaped nozzle; the sewage after cleaning flows into the sewage pool and the sewage circulation treatment device in turn.

[0094] A ground sensing coil inductor, a high-pressure impact fan-shaped nozzle, a water supply network, a water supply pump, and a sewage pool 15 are arranged in the vehicle washing area 14 .

[0095] The sewage circulation treatment equipment integrates the natural sedimentation area 9, the inclined tube sedimentation area 10, the quartz sand filtration area 13, the clean water area 12, the water supply pump, the electric control cabinet and the control system in the vehicle washing system into one device, thus realizing the equipmentization of the engineering project.

[0096] The water supply pump, electric control cabinet and control system are placed in the equipment room 11.

[0097] The sewage recycling treatment equipment can be fully installed in the manufacturing workshop, and single-machine debugging can be carried out, and then it can be transported to the project site as a whole. After being connected with other equipment, the linkage trial operation and debugging can be carried out, which reduces the workload of civil engineering on the project site and shortens the overall project construction period.

[0098] The sludge sedimentation tank is placed on the ground, and the sludge at the bottom of the tank can be discharged directly through the sewage pipe under the action of water pressure, making it convenient for operators to collect and process the sludge.

[0099] In addition to supplying water to clean the pipes, the variable frequency water supply pump can also be switched to backwash the quartz sand filter layer, realizing the multi-purpose use of a single device and improving equipment utilization.

[0100] The cleaned sewage first flows into the sewage pool 15, and then is sent to the natural sedimentation area 9 of the integrated equipment through the sludge pump, and then flows into the inclined tube sedimentation area 10, and then enters the quartz sand filtration area 13 to complete the filtration of particulate matter. The water quality reaches the level of reclaimed water, and finally enters the clean water area for standby use, truly integrating the entire sewage circulation function into one device.

[0101] The present invention integrates various technologies and equipment to form a new process route for coordinated waste gas treatment, which can effectively solve the problem of unorganized waste gas emissions from delayed coking. It not only has good waste gas control and treatment effects, high cost performance, stable operation, and a high degree of automation, but also does not change the original production process, has a short transformation period, and does not affect the normal progress of the main production process.

[0102] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Delayed coking coke storage pool unorganized emission waste gas control and coordinated treatment system, characterized by include: The fully enclosed system of the coke storage tank wraps the coke storage tank, sewage treatment tank, top coke grabbing crane, open-air trestle of the crane, automobile transportation channel next to the coke storage tank, and loading hopper in the delayed coking process in the fully enclosed system; the fully enclosed system includes a coke storage tank solar film enclosed system, a ventilation system in the shed, and a coke grabbing and unloading dust suppression system in the shed; the coke storage tank solar film enclosed system is a membrane structure shed, including a PVDF membrane and a carbon steel skeleton supporting the membrane; the ventilation system in the shed is provided with an exhaust point at the top according to the different amounts of waste gas generated in each area of ​​the delayed coking coke storage tank during the coke discharge, coke cooling, and coke grabbing stages, and doors and windows are provided at the end away from the coke chute and the entrance and exit of the loading vehicle; the coke grabbing and unloading dust suppression system in the shed includes a dust suppression spray fog cannon, which is arranged around the coke storage tank and is equipped with a dosing system to spray natural plant deodorizing liquid onto the coke powder in the shed; An exhaust gas collection system, the exhaust gas collection system includes an exhaust hood, a resistance balancer, an electric air volume regulating valve, and an exhaust gas collection pipe network; the exhaust gas collection pipe network is arranged on the top and side of the closed membrane structure greenhouse, and an exhaust hood is set above the coke chute and on the top of the membrane structure greenhouse after the tank body is closed. The resistance balance in each pipeline is adjusted by the electric air volume regulating valve and the resistance balancer to ensure that each point can work according to the designed air volume when the system is running; An exhaust gas treatment system, the exhaust gas treatment system comprising a fan, a cooling tower, a demister, a spray tower, a circulation pump, a dosing pump, a stirring pump, a liquid storage tank, a deodorizing liquid preparation concentration detector, a gas sulfur content concentration detector, and an electrical control system; The exhaust gas collection network transports the exhaust gas to the cooling tower, demister, spray tower, demister in sequence through the fan, and then to the inlet of the heating furnace blower.

2. The delayed coking coke storage pool unorganized emission waste gas control and coordinated treatment system according to claim 1, characterized in that It also includes an intelligent overhead crane coke grabbing system, which has cameras, video monitors, and positioning and identification devices installed around the coke pool and at the bottom of the crane; a weighing instrument is installed on the trolley that controls the grab bucket, and a fixed-point coke grabbing and unloading module and a frequency converter are installed in the electrical control cabinet located above the overhead crane; a three-dimensional laser scanner is installed above the overhead crane, and an intelligent control system, an operating table, and a display are provided in the ground control room, and the operating table can remotely operate the crane by infrared; the video monitor feeds back the situation in the coke pool to the ground operating room in real time; the three-dimensional laser scanner feeds back the accumulation of coke in the coke pool to the intelligent control system in real time, and displays it on the display in the ground control room, and the intelligent control system controls the overhead crane through programming to automatically grab the coke from the place where the material is piled high, and transport it to the designated place to unload the coke.

3. The delayed coking coke storage pool unorganized exhaust gas control and coordinated treatment system according to claim 1, characterized in that It also includes an automatic cleaning system for loading vehicles, which includes a ground sensing coil sensor, a high-pressure impact fan-shaped nozzle, a water supply network, a water supply pump, a sewage pool, and a sewage circulation treatment device; the ground sensing coil sensor is arranged at the exit of the membrane structure greenhouse, and the ground sensing coil sensor is arranged at the front of the lane. When a vehicle passes by, the ground sensing coil sensor sends a signal to the control system to control the water supply pump to start and clean the vehicle through the high-pressure impact fan-shaped nozzle; the sewage after cleaning flows into the sewage pool and the sewage circulation treatment equipment in turn.

4. The delayed coking coke storage pool unorganized exhaust gas control and coordinated treatment system according to claim 1, characterized in that The dosing system includes water supply and drainage pipes, a water supply pump, a stirring pump, a water storage tank, and a butterfly valve; a stirring pump is arranged inside the liquid storage tank; the deodorizing liquid is sent to the dust suppression mist cannon through the water supply pump to cover the coke powder; and insulation and electric heating are arranged on the liquid storage tank.

5. The delayed coking coke storage pool unorganized exhaust gas control and coordinated treatment system according to claim 1, characterized in that The focus storage tank solar membrane enclosed system is based on different environmental characteristics on site. When the reserved space on both sides is sufficient, an inverted membrane structure with the membrane on the inside and the steel structure frame on the outside is selected; when the reserved space on both sides is insufficient, a skeleton membrane structure with the membrane on the outside and the steel structure frame on the inside is selected.

6. The delayed coking coke storage pool unorganized exhaust gas control and coordinated treatment system according to claim 1, characterized in that The fan adopts a variable frequency configuration.

7. The delayed coking coke storage pool unorganized exhaust gas control and coordinated treatment system according to claim 2, characterized in that The camera is provided with a hair dryer and a windshield wiper.

8. The delayed coking coke storage tank unorganized exhaust gas control and coordinated treatment system according to claim 3, characterized in that The sewage circulation treatment equipment integrates a natural sedimentation area, an inclined tube sedimentation area, a quartz sand filtration area, a clean water area, a water supply pump, an electric control cabinet and a control system into one device.

9. The delayed coking coke storage tank unorganized emission waste gas control and coordinated treatment system according to claim 2, characterized in that The setting mode of the fixed-point focusing and unloading module is: when defocusing, the fixed-point focusing and fixed-point unloading modes are used for control, and the overhead crane directly goes to several designated points to focus and unload; when defocusing is completed, it switches to the intelligent recognition focusing and fixed-point unloading mode.

10. The delayed coking coke storage pool unorganized exhaust gas control and coordinated treatment system according to claim 1, characterized in that The spray tower is connected to a biological liquid storage tank through a dosing pump. The biological liquid storage tank is used to dilute the natural plant deodorizing liquid. A mixing concentration detector is installed on the biological liquid storage tank. A gas sulfur content concentration detector is arranged on the pipeline behind the spray tower.

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