CN218608359U - Coarse slag dewatering equipment for coal coke gas making device - Google Patents
Coarse slag dewatering equipment for coal coke gas making device Download PDFInfo
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- CN218608359U CN218608359U CN202222238251.6U CN202222238251U CN218608359U CN 218608359 U CN218608359 U CN 218608359U CN 202222238251 U CN202222238251 U CN 202222238251U CN 218608359 U CN218608359 U CN 218608359U
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Abstract
The utility model discloses an equipment of thick sediment dehydration of coal coke gas making device, including the slag bath, ann changes the dragveyer that has a plurality of scraper blade on the slag bath, dragveyer slope sets up and the bottom stretches into in the slag bath, the top of dragveyer stretches out the slag bath and is provided with by motor drive's belt under the top, sends thick sediment to the slag bath through the belt and collects, be provided with dewatering device between the top of dragveyer and belt, dewatering device includes the containing box, be equipped with by motor drive's shale shaker on the containing box, be located the containing box lateral wall of shale shaker top and seted up the discharge gate, the containing box bottom is equipped with the blanking groove, the blanking groove passes through the pipe connection slag bath setting, has and can solve thick sediment water content high and cause technical characterstic such as equipment corruption is serious, the manufacturing cost is high, the site environment is poor, product outsourcing difficulty.
Description
Technical Field
The utility model relates to an equipment, more specifically say a little, relate to an equipment of coarse sediment dehydration of coal coke gas making device, belong to the petrochemical field.
Background
The coarse slag of the gasification device is derived from non-combustible components in raw material coal, and is large particles formed by chilling and solidifying when meeting water in a high-temperature melting and flowing state, and is discharged to the slag salvaging machine from the slag collecting lock hopper, and then is scraped to the outside of a coarse slag belt conveying and outputting interface zone through a scraper of the slag salvaging machine. Because the water content in the coarse slag is high, the operation of equipment such as a slag conveyor, a belt motor and the like is influenced, a certain degree of environmental pollution is caused, the factory difficulty and load of the coarse slag are increased, and therefore, a coarse slag dewatering facility is necessary to be added, and a series of influences caused by overlarge water content are solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the prior art problem, the utility model provides a coke gas making device coarse slag dehydration's equipment with can solve coarse slag water content high and cause technical characterstic such as equipment corrosion is serious, manufacturing cost is high, the site environment is poor, the product is sold the difficulty outward.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the utility model provides an equipment of thick sediment dehydration of coal tar system gas device, includes the slag bath, ann changes the dragveyer that has a plurality of scraper blade on the slag bath, dragveyer slope sets up and the bottom stretches into in the slag bath, the top of dragveyer stretches out the slag bath and is provided with by motor drive's belt under the top, sends thick sediment to the slag bath through the belt and collects, be provided with dewatering device between the top of dragveyer and belt, dewatering device includes the containing box, be equipped with on the containing box by motor drive's shale shaker, be located and seted up the discharge gate on the containing box lateral wall of shale shaker top, the containing box bottom is equipped with the charging chute, the charging chute passes through the pipe connection slag bath setting.
Preferably, still include pneumatic three-way switch valve, one of pneumatic three-way switch valve leads to be connected with the discharge gate, the belt is equipped with two, the other two of pneumatic three-way switch valve lead to the top that is located a belt respectively.
Preferably, still include the gasification furnace and have the high-pressure coal slurry tank of agitator, the entrance point of high-pressure coal slurry tank inserts has the coal slurry who comes from the coal slurry tank, the exit end of high-pressure coal slurry tank is through No. four pipe connections on the technology nozzle of gasifier, still be connected with the No. five pipelines of input hyperbaric oxygen on the technology nozzle, the gasification furnace includes the chilling chamber and is located the chilling chamber top and can spray the shower nozzle of washing cooling water, there is the lock fill gasifier bottom through the pipe connection, the lock fill passes through the pipe connection on the slag bath.
Preferably, the chilling chamber is connected with a first pipeline, and the first pipeline is connected to a black water treatment system; the slag pool is connected with a second pipeline, the second pipeline is close to the upper end of the slag pool, the second pipeline is connected into the black water treatment system, and the first pipeline and the second pipeline form a circulating pipeline.
Preferably, a third pipeline is connected to the gasification furnace above the chilling chamber, and the third pipeline outputs the crude synthesis gas.
Preferably, the gasification furnace is connected with a slag breaker, and the slag breaker extends into the bottom of the chilling chamber.
Preferably, the fourth pipeline is connected with a high-pressure coal slurry pump; the first pipeline is connected with a chilling water pump; and the second pipeline is connected with a slag pool pump.
Preferably, the fourth pipeline is provided with two sub-fourth pipelines, the process burner is provided with two sub-fourth pipelines, and the two sub-fourth pipelines are respectively connected to one process burner.
Preferably, the fifth pipeline is provided with four sub-fifth pipelines, wherein two sub-fifth pipelines are connected to one process burner, and the other two sub-fifth pipelines are connected to the other process burner.
Preferably, a stirrer is arranged in the slag pool.
Has the advantages that: the method has the technical characteristics of solving the problems of serious equipment corrosion, high production cost, poor field environment, difficult product export and the like caused by high water content of coarse slag.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of a part of the structure of the present invention.
Detailed Description
The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following embodiments.
The gasification device in the prior art has the following technical problems: the water in the coarse slag is too large, the viscosity of the slag is increased, the coarse slag conveying belt 4 is easy to stick materials, a large amount of materials leak along the line are easy to cause, and the cleaning difficulty and the labor intensity are increased.
The water and the sulfur element contained in the coarse slag generate corrosiveness together, and carbon steel equipment such as a belt 4 blanking pipe and the like can be damaged after long-term existence, so that the service life of the equipment is shortened.
The viscosity of the coarse slag is increased, so that the buffer corner of the blanking pipe is easy to be bonded with blockage and the flash of the blanking pipe; and the driving equipment is overloaded, which influences the stability of the operation of the conveying system.
The coarse slag is stacked after being transported to a slag yard, and a large amount of black water in the slag yard overflows due to the contained water, so that the cleanness and sanitation of the site are seriously influenced; and the environment-friendly event is easily caused in rainy weather.
After the coarse slag with excessive water is accumulated in a slag yard, the coarse slag is drained and air-dried slowly, cannot be loaded on a ship and transported outside in time, easily causes the accumulation of a large amount of materials, is discharged from the warehouse slowly, and has large pressure of the warehouse capacity.
The ship transportation has strict regulations on the moisture of solid waste of bulk materials, and the receiving and use of customers are also influenced due to large moisture content.
In order to solve the technical problem, as shown in fig. 1-2, a specific embodiment of a device for dehydrating coarse slag of a coke coal gas making device is provided, which includes a slag bath 2, a slag dragveyer with a plurality of scrapers is installed and rotated on the slag bath 2, the slag dragveyer is inclined and arranged, and the bottom end of the slag dragveyer extends into the slag bath 2, the top end of the slag dragveyer extends out of the slag bath 2 and is provided with a belt 4 driven by a motor under the top end, the coarse slag is conveyed to the slag bath through the belt 4 to be collected, a dehydration device is arranged between the top end of the slag dragveyer and the belt 4, the dehydration device includes a storage box 3, a vibrating screen 5 driven by the motor is arranged on the storage box 3, a discharge port is arranged on the side wall of the storage box 3 above the vibrating screen 5, a chute 1 (water collecting chute) is arranged at the bottom of the storage box 3, and the chute 1 is connected with the slag bath 2 through a pipeline. Still include pneumatic three-way switch valve, one of pneumatic three-way switch valve leads to be connected with the discharge gate, belt 4 is equipped with two, other two of pneumatic three-way switch valve lead to and are located the top of a belt 4 respectively. Still include the gasification furnace 6 and have the high-pressure coal slurry tank 7 of agitator 13, the entrance point of high-pressure coal slurry tank 7 inserts has the coal slurry who comes from the coal slurry tank, the exit end of high-pressure coal slurry tank 7 is through No. four pipe connections on the technology nozzle 14 of gasifier, still be connected with the No. five pipeline of input hyperbaric oxygen on the technology nozzle 14, gasification furnace 6 includes the chilling chamber and is located the chilling chamber top and can spray the shower nozzle of washing cooling water, there is lock bucket 8 gasifier bottom through the pipe connection, lock bucket 8 passes through the pipe connection on slag bath 2.
In a preferred embodiment mode, a first pipeline is connected with the chilling chamber and is connected into the black water treatment system 9; a second pipeline is connected to the slag pool 2, the second pipeline is close to the upper end of the slag pool 2, the second pipeline is connected to the black water treatment system 9, and the first pipeline and the second pipeline form a circulating pipeline.
In a preferred embodiment mode, a third pipeline is connected to the gasification furnace 6 above the chilling chamber, and the third pipeline outputs crude synthesis gas.
In a preferred embodiment mode, the gasification furnace is connected with a slag breaker 15, and the slag breaker 15 extends into the bottom of the chilling chamber.
In a preferred embodiment, a high-pressure coal slurry pump 10 is connected to the fourth pipeline; the first pipeline is connected with a chilling water pump 11; and a slag pool pump 12 is connected to the second pipeline.
In a preferred embodiment, the four pipelines are respectively provided with two sub-four pipelines, the process burner 14 is provided with two sub-four pipelines, and the two sub-four pipelines are respectively connected to one process burner 14.
In a preferred embodiment, the fifth pipeline is divided into four sub-fifth pipelines, wherein two sub-fifth pipelines are connected to one process burner 14, and the other two sub-fifth pipelines are connected to the other process burner 14.
In a preferred embodiment, a stirrer 13 is arranged in the slag pool 2.
The technical scheme is as follows:
the coal water slurry from the high-pressure coal slurry tank is pressurized by a high-pressure coal slurry pump 10 and then enters a process burner 14 of a gasification furnace, pure oxygen (high-pressure oxygen) from an air separation device is divided into four paths and enters a central channel and an outer channel of the process burner 14, and crude synthesis gas (H) is generated under the condition of high temperature 2 、CO、CO 2 And mixtures of water vapor and the like). Unconverted components in coal slurry and coal ash form ash slag, the ash slag is quenched downwards in a gasification furnace by washing cooling water and falls into a quenching chamber, coarse slag at the bottom of the quenching chamber is discharged into a lock hopper 8 at regular time by a slag breaker 15, the lock hopper 8 is circularly divided into five stages of slag collection, pressure reduction, cleaning, slag discharge and pressurization and is discharged into a slag pool 2, cleaner black water at the upper part of the slag pool 2 is sent to a black water treatment system 9 (a black water/grey water system mainly comprising a settling tank, a grey water tank and a filtrate tank) by a slag pump 12 for recycling, the coarse slag at the bottom of the slag pool 2 is sent to a belt 4 by a slag salvaging machine (the conveying function is realized by continuous rotation of a plurality of scrapers) and is transported out of a boundary area, so that the coarse slag is sent to the belt 4A slag storage.
This application has the dehydration function, specifically does:
the double-vibration motor is adopted for driving, synchronous and reverse rotation is carried out, the exciting forces generated by the eccentric blocks of the vibration motors are mutually offset in the direction of the axis of the motor, and a resultant force is superposed in the direction perpendicular to the axis of the motor, so that a single exciting force along the vibration direction is formed, and materials are thrown up and jumped on the screen surface under the action of the exciting force. Under the action of the exciting force, the water tension on the surface of the material is changed, the ash water reaches the fine sieve pores on the sieve plate and falls down, the material moves on the sieve plate (the vibrating screen 5) (in order to improve the blanking effect, the vibrating screen 5 can be arranged towards the lower discharge hole), and finally the dehydration effect is realized. Further integrate pneumatic three way switch valve and dewatering device into a system, the thick sediment of gasification falls into pneumatic three way switch valve by the dragveyer discharge gate, pneumatic three way valve adopts on-the-spot PLC control, the air supply is taken over and is utilized former interface, the sediment passageway that falls is divided into two routes, be main working channel all the way, another way is reserve passageway, conveniently adopt the automobile transportation, two routes also can be nimble carry out two belt 4 transports, divide two routes to get into follow-up sediment belt 4 (belt 4 machine), pneumatic three way switch valve is used for the mutual switch-over of two sediment belts 4, the valve design need be convenient for the switch operation, prevent that valve plate passageway long-pending sediment from causing the switch difficulty, the recycle after the separated buck returns dragveyer through the return water pipeline.
The technical specification of the application is as follows:
a) The vibration dehydration device has small volume and large processing capacity per unit area, and is convenient for system process arrangement.
b) The vibration frequency, the amplitude and the low-consumption power source can be adjusted, and the continuous working requirement is met.
c) The slope climbing dehydration of the sieve face of negative angle design, the material dewatering effect is better.
d) The wear-resisting sieve of stainless steel or polyurethane of V type design, life is longer, and modular assembly designs, it is more convenient to change.
e) The screen body adopts the integral riveting structure, and is firm and firm, and the bolt is difficult for droing.
f) The grey water is collected in a centralized way and flows back in a centralized way, so that the field arrangement is convenient.
The application conditions are as follows:
a) The ambient temperature does not exceed 40 deg.C (if it exceeds the required load).
b) The power supply is three-phase 380V and the frequency is 50Hz.
c) The allowable temperature of the bearing does not exceed 90 ℃.
d) The water pressure of the on-site back flushing pipeline is not lower than 0.6MPa.
e) The backwash water may be used as reuse water, but the ash content of the reuse water must be reduced to prevent clogging of the nozzles and backwash lines.
Installation and debugging:
a) The upper flatness error of four basic seat plates on the dewatering device platform (steel platform) is less than 1.0mm.
b) The installation sequence is that the base (platform) of the dewatering device, the damping spring (matched with the vibrating screen 5), the vibrating screen 5 and the motor (matched with the back washing pipeline and the water separating pipeline can be increased).
c) After the installation is finished, the relative position is adjusted, each group of damping springs are guaranteed to be in a vertical state, and then the platform is firmly welded with the steel plate of the embedded ground.
d) The cable is not collided or rubbed with the vibrating body, and is in a natural suspension state, and a bending radius which is 5-6 times larger than the outer diameter of the cable is required, and then the cable is fixed on a stationary machine or a frame.
e) The dehydration device runs for 2-4 hours in no-load mode, has no yaw phenomenon and abnormal sound, has the same amplitude at the left and right symmetric points, and can be loaded and run.
f) If abnormal noise occurs in a short time, the machine should be stopped immediately, and the conditions of parts such as a motor, a motor bearing, an eccentric block and the like are checked and processed. If the vibrating screen 5 generates noise, the pressing condition of the vibrating screen 5 is checked and pressed, and the vibrating screen is restarted after the fault is eliminated.
Trial commissioning:
a) The blanking at the outlet of the slag conveyor can be uniformly distributed on the whole screen surface, and if the blanking cannot be uniformly distributed on the whole screen surface, a material distributing baffle needs to be additionally arranged.
b) The material can run stably without deviation. If the deviation phenomenon exists, whether the opening and closing degrees of the balancing weights of the vibration motors are the same, whether the planeness of the four groups of damping springs is consistent, and whether the planeness of the four basic seat boards is consistent need to be checked.
c) The materials can be fully scattered in the operation process and have no material blocking and accumulation. If the material is not discharged smoothly, the height of the bulk material baffle needs to be adjusted.
d) And after the equipment normally operates, welding the bulk cargo baffle on site.
Use and maintenance:
a) The dewatering device should avoid the sundries around the device and on the device from being cleaned before starting and using the belt material.
b) The bolt is often checked for loosening. The equipment is operated for 100 hours for the first time, bolts (except for the riveted bolts) at each part are fastened once every 24 hours, and the equipment is checked once every three days after being operated for 100 hours.
c) The running condition of the materials on the screen surface is often checked, and if the screen surface has the phenomena of material accumulation and dust adhesion, the materials are immediately cleaned.
d) The water pressure and the water quality of the backwashing pipeline (the washing vibrating screen 5) are frequently checked, and if the nozzle is blocked, the backwashing water quality is immediately dredged and improved.
e) And the lubricating grease of the inferior Shell Aiwanli EP2 is required to be filled in the bearing cavities at two ends of the vibration motor every 300 hours of operation, and the filling amount is 10 ml/time. (Note: the type of the grease should be adjusted according to seasonal changes)
f) When the sieve plate (vibrating screen 5) needs to be replaced, the edge pressing sleepers are knocked out, the middle pressing bar bolt is loosened, the old sieve plate is taken out, and the sieve plate with the same specification is loaded and then is compressed again.
g) When the spring is replaced, the sieve body can be replaced after being integrally hoisted.
Effect analysis of the prior art and the technical scheme of the application:
a) Comparison of coarse slag Water content
The coarse slag is subjected to full water analysis before and after passing through the vibrating screen 5, and from the analysis data, the water content is relatively stable after passing through the dewatering device, and the transportation requirements of the slag conveying belt 4 are basically met.
Table 1: comparison of water content before and after reforming
| Serial number | Before passing through a vibrating screen 5 | After passing through a vibrating screen 5 |
| 1 | 30.6 | 13.0 |
| 2 | 31.5 | 26.0 |
| 3 | 40.8 | 28.3 |
| 4 | 39.7 | 19.5 |
| 5 | 40.2 | 27.4 |
| 6 | 34.4 | 27.5 |
| 7 | 36.9 | 29.8 |
| 8 | 62.5 | 24.6 |
And (3) comparing the production cost and the expense:
in the prior art, the water content of the coarse slag is too high, the conveying belt 4 cannot run due to factors such as material sticking, equipment corrosion, on-site slag water cross flow and the like, and the coarse slag is forced to be transported by vehicles to ensure the running of the gasification furnace, and the cost of one year is 245 ten thousand yuan.
Table 2: annual cost of vehicle slag pulling in the prior art
This application adopts belt 4 to transport, has promoted the long period operation's of gasifier stability, has improved site environment, has subdued the manual work by a wide margin, and the investment cost is 241 ten thousand yuan.
Table 3: annual cost of 4 transmission and rotation of belt
As can be seen from the comparison, the main cost of the application is derived from equipment cost, and the cost can be recovered in the first year. And only simple maintenance is carried out later, certain electric quantity is used, and the annual income is 214 ten thousand yuan.
After the coarse slag is dehydrated and transformed, the water content is greatly reduced, the phenomenon that the coarse slag carries water is effectively solved, the coarse slag belt 4 meets the designed commissioning requirement, and the coarse slag belt 4 normally operates at present. After the belt 4 conveying is recovered, the high cost of automobile transportation is reduced; the pollution of the coarse slag with water overflow to the ground environment is improved, and the aims of protecting the environment and cleaning and civilized production are fulfilled; the outward transportation and sale of the coarse slag are not affected by the large humidity of the slag any more, and the coarse slag can be timely shipped and sold. Finally, the expected purpose and the actual effect of the transformation are realized.
Finally, it should be noted that the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (10)
1. The utility model provides a device for dehydration of coarse slag of coal coke gas making device which characterized in that: including the slag bath, the ann changes the dragveyer that has a plurality of scraper blade on the slag bath, dragveyer slope sets up and the bottom stretches into in the slag bath, the top of dragveyer stretches out the slag bath and is provided with by motor drive's belt under the top, sends the coarse slag to the slag storehouse through the belt and collects, be provided with dewatering device between the top of dragveyer and belt, dewatering device includes the containing box, be equipped with on the containing box by motor drive's shale shaker, be located the containing box lateral wall of shale shaker top and seted up the discharge gate, the containing box bottom is equipped with the blanking groove, the blanking groove passes through the pipe connection slag bath setting.
2. The device for dehydrating the coarse slag of the coal tar gas making device according to the claim 1 is characterized in that: still include pneumatic three-way switching valve, one of pneumatic three-way switching valve leads to and is connected with the discharge gate, the belt is equipped with two, the other two of pneumatic three-way switching valve lead to the top that is located a belt respectively.
3. The device for dehydrating the coarse slag of the coal tar gas making device according to the claim 1 or 2, characterized in that: still include the gasification furnace and have the high-pressure coal slurry tank of agitator, the entrance point of high-pressure coal slurry tank inserts has the coal slurry who comes from the coal slurry tank, the exit end of high-pressure coal slurry tank is through No. four pipe connections on the technology nozzle of gasifier, still be connected with the No. five pipelines of input hyperbaric oxygen on the technology nozzle, the gasification furnace includes the chill chamber and is located the chill chamber top and can spray the shower nozzle of washing cooling water, there is the lock fill gasifier bottom through the pipe connection, the lock fill passes through the pipe connection on the slag bath.
4. The device for dehydrating the coarse slag of the coal coke gas making device according to claim 3, characterized in that: the chilling chamber is connected with a first pipeline, and the first pipeline is connected to a black water treatment system; the slag pool is connected with a second pipeline, the second pipeline is close to the upper end of the slag pool, the second pipeline is connected into the black water treatment system, and the first pipeline and the second pipeline form a circulating pipeline.
5. The device for dehydrating the coarse slag of the coal tar gas making device according to the claim 3, characterized in that: and a third pipeline is connected to the gasification furnace above the chilling chamber and outputs crude synthesis gas.
6. The device for dehydrating the coarse slag of the coal coke gas making device according to claim 4 or 5, characterized in that: the gasifier is connected with a slag breaker, and the slag breaker extends into the bottom of the chilling chamber.
7. The device for dehydrating the coarse slag of the coal tar gas making device according to the claim 4 is characterized in that: the fourth pipeline is connected with a high-pressure coal slurry pump; the first pipeline is connected with a chilling water pump; and the second pipeline is connected with a slag pool pump.
8. The device for dehydrating the coarse slag of the coal coke gas making device according to claim 3, characterized in that: the four pipelines are respectively provided with two sub-four pipelines, the process burner is provided with two sub-four pipelines, and the two sub-four pipelines are respectively connected to one process burner.
9. The device for dehydrating the coarse slag of the coal coke gas making device according to claim 8, characterized in that: the fifth pipeline is provided with four sub-fifth pipelines, wherein two sub-fifth pipelines are connected to one process burner, and the other two sub-fifth pipelines are connected to the other process burner.
10. The device for dehydrating the coarse slag of the coal tar gas making device according to the claim 1 is characterized in that: a stirrer is arranged in the slag pool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222238251.6U CN218608359U (en) | 2022-08-25 | 2022-08-25 | Coarse slag dewatering equipment for coal coke gas making device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222238251.6U CN218608359U (en) | 2022-08-25 | 2022-08-25 | Coarse slag dewatering equipment for coal coke gas making device |
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