Novel dehydration system for gasified slag

Abstract

A novel dehydration system for gasified slag is characterized in that a centrifugal machine is arranged opposite to a feeding port of a roll-in belt type filtering and low-temperature drying all-in-one machine, a discharging port of the roll-in belt type filtering and low-temperature drying all-in-one machine is arranged opposite to a discharging hopper, a discharging screw conveyor is arranged below the discharging hopper, and a rotary valve is arranged at the tail end of the discharging screw conveyor; a belt conveyor is arranged below the rotary valve, the hot air output end of the heater is connected with a hot air inlet of a rolling belt type filtering and low-temperature drying all-in-one machine, and a hot air outlet of the rolling belt type filtering and low-temperature drying all-in-one machine is connected with a hot air inlet of an air-air heat exchanger. A hot air outlet of the gas-gas heat exchanger is connected with an air inlet of the condenser, an air outlet of the condenser is connected with an air inlet of the circulating fan, an air outlet of the circulating fan is connected with a cold air inlet of the gas-gas heat exchanger, and a cold air outlet of the gas-gas heat exchanger is connected with the cold air input end of the heater.

Description

Technical Field

[0001] The utility model discloses a dehydration system, in particular to a novel dehydration system for gasification slag, belonging to the technical field of gasification slag drying. Background Technique

[0002] Coal gasification technology is the leading and core technology in the coal chemical industry. During the coal gasification process, coal gasification residues will inevitably be generated. Under the existing coal gasification process, the water content of coal gasification residues is usually about 85% - 95%. How to carry out low-carbon, energy-saving and environmental protection treatment of gasification slag has become one of the bottlenecks restricting the large-scale development of coal gasification. Therefore, developing a novel dehydration system for gasification slag is of great significance for realizing the resource utilization of gasification slag. Summary of the Invention

[0003] Aiming at the problem that the coal gasification residues in the above-mentioned existing technology are difficult to treat, the utility model provides a novel dehydration system for gasification slag, which dehydrates gasification slag through the combination of mechanical dehydration and low-temperature drying, with energy conservation and environmental protection.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a novel dehydration system for gasification slag, which system includes a centrifuge, a roll press belt filter and low-temperature drying integrated machine, a discharge hopper, a discharge screw conveyor, a rotary valve, a belt conveyor, a gas-gas heat exchanger, a condenser, a circulation fan and a heater. The centrifuge is oppositely arranged with the feed inlet of the roll press belt filter and low-temperature drying integrated machine. The discharge outlet of the roll press belt filter and low-temperature drying integrated machine is oppositely arranged with the discharge hopper. The discharge screw conveyor is arranged below the discharge hopper. A rotary valve is arranged at the end of the discharge screw conveyor. A belt conveyor is arranged below the rotary valve. The hot air output end of the heater is connected with the hot air inlet of the roll press belt filter and low-temperature drying integrated machine. The hot air outlet of the roll press belt filter and low-temperature drying integrated machine is connected with the hot air inlet of the gas-gas heat exchanger. The hot air outlet of the gas-gas heat exchanger is connected with the air inlet of the condenser. The air outlet of the condenser is connected with the air inlet of the circulation fan. The air outlet of the circulation fan is connected with the cold air inlet of the gas-gas heat exchanger. The cold air outlet of the gas-gas heat exchanger is connected with the cold air input end of the heater.

[0005] The technical solution adopted by the utility model to solve its technical problems further further includes:

[0006] The heater adopts a steam-type heater or an electric-type heater.

[0007] The described roll-pressing belt filtration and low-temperature drying integrated machine includes a frame, a feeding mechanism, a transmission mechanism, a roll-pressing mechanism, a low-temperature drying mechanism, a drainage port, and a discharge port. The transmission mechanism is installed inside the frame, the feeding mechanism is installed on the frame and is disposed corresponding to the front end of the transmission mechanism, the discharge port is installed on the frame and is disposed corresponding to the rear end of the transmission mechanism, the roll-pressing mechanism is installed inside the frame and is disposed relative to the transmission mechanism, the low-temperature drying mechanism is arranged on the frame and is disposed relative to the transmission mechanism, and the drainage port is opened below the frame.

[0008] The described transmission mechanism includes a main belt-driven pulley, a main belt-driving pulley, a main belt filter belt, a main belt motor drive mechanism, a main belt scraper, and a main belt roll-pressing wheel. The main belt-driven pulley and the main belt-driving pulley are respectively arranged at the front and rear ends inside the frame. The main belt filter belt is hung on the main belt-driven pulley and the main belt-driving pulley. The main belt filter belt has filter holes. The main belt roll-pressing wheel is arranged between the main belt-driven pulley and the main belt-driving pulley. The main belt motor drive mechanism is fixedly installed on the frame. The main belt motor drive mechanism is connected to the main belt-driving pulley through a belt. The main belt scraper is arranged corresponding to the main belt filter belt and is arranged above the discharge port.

[0009] The described roll-pressing mechanism includes a roll-pressing belt-driven pulley, a roll-pressing belt-driving pulley, a roll-pressing belt, a roll-pressing belt adjustable roll-pressing wheel, a roll-pressing belt scraper, and a roll-pressing belt motor drive mechanism. The roll-pressing belt-driven pulley and the roll-pressing belt-driving pulley are respectively arranged at the front and rear ends. The roll-pressing belt is hung on the roll-pressing belt-driven pulley and the roll-pressing belt-driving pulley. The roll-pressing belt adjustable roll-pressing wheel is arranged between the roll-pressing belt-driven pulley and the roll-pressing belt-driving pulley. The roll-pressing belt adjustable roll-pressing wheel is arranged opposite to the main belt roll-pressing wheel. The roll-pressing belt motor drive mechanism is fixedly installed on the frame. The roll-pressing belt motor drive mechanism is connected to the roll-pressing belt-driving pulley through a belt. The roll-pressing belt scraper is arranged corresponding to the roll-pressing belt.

[0010] The described drainage port is arranged corresponding to the lower part of the roll-pressing mechanism.

[0011] The described feeding mechanism includes a mixing storage hopper, an anti-arching device, and a distributing device. An inlet is opened above the mixing storage hopper. The anti-arching device and the distributing device are arranged inside the mixing storage hopper. The distributing device is arranged below the anti-arching device.

[0012] The described low-temperature drying mechanism includes a hot air inlet and a hot air outlet. The hot air inlet and the hot air outlet are respectively opened on the frame. There are two or more groups of the hot air inlet and the hot air outlet respectively. The hot air inlet and the hot air outlet are arranged alternately.

[0013] The described low-temperature drying mechanism is arranged behind the roll-pressing mechanism.

[0014] An inspection opening is opened at the bottom of the described frame and is arranged corresponding to the position of the low-temperature drying mechanism.

[0015] The beneficial effects of the present utility model are as follows: The present utility model processes gasification slag by combining mechanical dehydration and low-temperature drying, which is energy-saving and environment-friendly. The roll-press belt filtration and low-temperature drying integrated machine is used to realize the dehydration of gasification slag. The dehydration effect can be flexibly adjusted, the drying temperature is low, the residue on the filter bag is easy to be completely removed, the circulating gas volume is small, and it is energy-saving and environment-friendly. The present utility model is safe and reliable, with low investment cost. The centrifuge dehydrates to 50% - 60%, the roll-press section dehydrates to 35% - 40%, the low-temperature drying section dehydrates to 25% - 30%, the heating temperature of the low-pressure carrier gas is 80°C - 95°C, the heat source is mild, far lower than the spontaneous combustion temperature point of the material, the drying process is safe and reliable, the system configuration is simple, the heat energy consumption is low, and at the same time, the equipment investment cost is low.

[0016] The following will further describe the present utility model in conjunction with the drawings and specific embodiments. Description of the Drawings

[0017] Figure 1 It is a schematic block diagram of the system of the present utility model.

[0018] Figure 2 It is a schematic external structure diagram of the roll-press belt filtration and low-temperature drying integrated machine of the present utility model.

[0019] In the figure: 1 - centrifuge, 2 -,,,, 21 - mixed storage hopper, 22 - arch breaker, 23 - distributor, 24 - frame, 25 - main belt driven wheel, 26 - main belt driving wheel, 27 - main belt filter belt, 28 - main belt motor drive mechanism, 29 - main belt scraper, 210 - main belt roll-press wheel, 211 - roll-press belt driven wheel, 212 - roll-press belt driving wheel, 213 - roll-press belt motor drive mechanism, 214 - roll-press belt scraper, 215 - roll-press belt, 216 - roll-press belt adjustable roll-press wheel, 217 - hot air inlet, 218 - hot air outlet, 219 - feed inlet, 220 - drain outlet, 221 - maintenance opening, 222 - discharge outlet, 3 - discharge hopper, 4 - discharge screw conveyor, 5 - rotary valve, 6 - belt conveyor, 7 - gas-gas heat exchanger, 8 - condenser, 9 - circulation fan, 10 - heater. Specific Embodiments

[0020] This embodiment is the preferred embodiment of the present utility model. All other embodiments with the same or similar principles and basic structures as this embodiment are within the protection scope of the present utility model.

[0021] Please refer to the attached Figure 1 and the attached Figure 2, the present utility model mainly protects a new type of gasification slag dehydration system, including a centrifuge 1, a roll press belt filter and low-temperature dryer integrated machine 2, a discharge hopper 3, a discharge screw conveyor 4, a rotary valve 5, a belt conveyor 6, a gas-gas heat exchanger 7, a condenser 8, a circulation fan 9 and a heater 10. The centrifuge 1 is arranged opposite to the feed inlet of the roll press belt filter and low-temperature dryer integrated machine 2. Wet materials are input into the roll press belt filter and low-temperature dryer integrated machine 2 through the centrifuge 1. The discharge outlet of the roll press belt filter and low-temperature dryer integrated machine 2 is arranged opposite to the discharge hopper 3. The discharge screw conveyor 4 is arranged below the discharge hopper 3. A rotary valve 5 is arranged at the end of the discharge screw conveyor 4. A belt conveyor 6 is arranged below the rotary valve 5. The materials dried by the roll press belt filter and low-temperature dryer integrated machine 2 are transported to the belt conveyor 6 through the discharge hopper 3 and the discharge screw conveyor 4, and the dry materials are discharged through the belt conveyor 6. The hot air output end of the heater 10 is connected to the hot air inlet of the roll press belt filter and low-temperature dryer integrated machine 2. The hot air outlet of the roll press belt filter and low-temperature dryer integrated machine 2 is connected to the hot air inlet of the gas-gas heat exchanger 7. The hot air outlet of the gas-gas heat exchanger 7 is connected to the air inlet of the condenser 8. The air outlet of the condenser 8 is connected to the air inlet of the circulation fan 9. The air outlet of the circulation fan 9 is connected to the cold air inlet of the gas-gas heat exchanger 7. The cold air outlet of the gas-gas heat exchanger 7 is connected to the cold air input end of the heater 10.

[0022] In this embodiment, the cold air inlet, cold air outlet, hot air inlet and hot air outlet of the gas-gas heat exchanger 7 only represent the channels of air inside it, and do not represent the input and output air temperatures. The air discharged from the roll press belt filter and low-temperature dryer integrated machine 2 exchanges heat with the air blown by the circulation fan 9 in the gas-gas heat exchanger 7, so that the air blown by the circulation fan 9 can be preheated first, and when it is heated by the heater 10 again, the energy consumption can be reduced. At the same time, the air discharged from the roll press belt filter and low-temperature dryer integrated machine 2 will also be cooled to a certain extent after passing through the gas-gas heat exchanger 7, and then the condensation effect in the condenser 8 will be better. In this embodiment, the heater 10 adopts a steam-type heater or an electric-type heater.

[0023] In this embodiment, a waste water outlet is arranged on the condenser 8, and the moisture carried in the hot air discharged from the gas-gas heat exchanger 7 can be condensed and discharged. The dry air enters the next cycle through the circulation fan 9, and the circulation fan 9 will also discharge the excess waste gas into the atmosphere.

[0024] Please refer to the attached Figure 2, in this embodiment, the roll press belt filter and low-temperature dryer integrated machine 2 has the functions of mechanical dehydration and low-temperature drying. The roll press belt filter and low-temperature dryer integrated machine 2 mainly includes a frame 24, a feeding mechanism, a transmission mechanism, a roll press mechanism, a low-temperature drying mechanism, a drain port 220, and a discharge port 222. The transmission mechanism is installed inside the frame 24, the feeding mechanism is installed on the frame 24 and is arranged corresponding to the front end of the transmission mechanism (in the present invention, the front and rear are defined according to the transportation direction of the material to be processed, and the material to be processed is transported from the front end to the rear end). The discharge port 222 is installed on the frame 24 and is arranged corresponding to the rear end of the transmission mechanism. The roll press mechanism is installed inside the frame 24 and is arranged relative to the transmission mechanism. The low-temperature drying mechanism is arranged on the frame 24 and is arranged relative to the transmission mechanism. The drain port 220 is opened below the frame 24.

[0025] In this embodiment, the transmission mechanism runs through the entire inside of the frame 24. The transmission mechanism includes a main belt driven wheel 25, a main belt driving wheel 26, a main belt filter belt 27, a main belt motor drive mechanism 28, a main belt scraper 29, and a main belt roll press wheel 210. The main belt driven wheel 25 and the main belt driving wheel 26 are respectively arranged at the front and rear ends inside the frame 24. In this embodiment, the main belt driven wheel 25 is arranged at the front end inside the frame 24, and the main belt driving wheel 26 is arranged at the rear end inside the frame 24. The main belt filter belt 27 is hung on the main belt driven wheel 25 and the main belt driving wheel 26, and the main belt filter belt 27 can be driven to move by the main belt driven wheel 25 and the main belt driving wheel 26, so as to realize material transportation. The main belt filter belt 27 has filter holes. During the transportation process, the material can be filtered by the main belt filter belt 27, which is convenient for realizing liquid-solid separation. In this embodiment, filtration and drying are realized on one machine, which is convenient for adjusting the moisture content of the material outlet. The main belt roll press wheel 210 is arranged between the main belt driven wheel 25 and the main belt driving wheel 26, and can support the main belt filter belt 27. The main belt motor drive mechanism 28 is fixedly installed on the frame 24. The main belt motor drive mechanism 28 is connected to the main belt driving wheel 26 through a belt, and the main belt driving wheel 26 is driven to rotate by the main belt motor drive mechanism 28. The main belt scraper 29 is arranged corresponding to the main belt filter belt 27, and the material on the main belt filter belt 27 can be scraped off by the main belt scraper 29. In this embodiment, the main belt scraper 29 is arranged above the discharge port 222, and the material transported on the main belt filter belt 27 can be directly scraped off and dropped into the discharge port 222 to discharge the dried material.

[0026] In this embodiment, the rolling mechanism includes a rolling belt-driven pulley 211, a rolling belt-driven pulley 212, a rolling belt 215, an adjustable rolling belt pulley 216, a rolling belt scraper 214, and a rolling belt motor drive mechanism 213. The rolling belt-driven pulley 211 and the rolling belt-driven pulley 212 are respectively arranged at the front and rear ends. In this embodiment, the rolling belt-driven pulley 211 is arranged at the front end, and the rolling belt-driven pulley 212 is arranged at the rear end. The rolling belt 215 is hung on the rolling belt-driven pulley 211 and the rolling belt-driven pulley 212, and the rolling belt 215 can be driven to move by the rolling belt-driven pulley 211 and the rolling belt-driven pulley 212, so as to realize the rolling of materials. The rolling belt 215 is a coated film belt without filter holes, which is convenient to realize the extrusion function. The adjustable rolling belt pulley 216 is arranged between the rolling belt-driven pulley 211 and the rolling belt-driven pulley 212. The adjustable rolling belt pulley 216 is arranged opposite to the main belt rolling pulley 210. The main belt rolling pulley 210 and the adjustable rolling belt pulley 216 are paired with each other for easy extrusion. The surfaces of the main belt rolling pulley 210 and the adjustable rolling belt pulley 216 are coated with PTFE to avoid sticking materials. The rolling belt motor drive mechanism 213 is fixedly installed on the frame 24. The rolling belt motor drive mechanism 213 is connected to the rolling belt-driven pulley 212 through a belt, and the rolling belt-driven pulley 212 is driven to rotate by the rolling belt motor drive mechanism 213. The rolling belt scraper 214 is arranged corresponding to the rolling belt 215, and the materials on the rolling belt 215 can be directly scraped off onto the main belt filter belt 27 by the rolling belt scraper 214.

[0027] In this embodiment, the main belt-driven pulley 25 and the rolling belt-driven pulley 211 have an automatic adjustment function, which can adjust the length of the belt and the deviation correction function.

[0028] In this embodiment, the drain port 220 is arranged corresponding to the lower part of the rolling mechanism.

[0029] In this embodiment, the feeding mechanism includes a mixing storage hopper 21, an arch breaker 22, and a distributor 23. An inlet 219 is opened above the mixing storage hopper 21. The arch breaker 22 and the distributor 23 are arranged in the mixing storage hopper 21, and the distributor 23 is arranged below the arch breaker 22. In this embodiment, the distributor 23 is a double-axis meshing distributor, which is beneficial for uniform feeding and self-cleaning of materials.

[0030] In this embodiment, the low-temperature drying mechanism includes a hot air inlet 217 and a hot air outlet 218. The hot air inlet 217 and the hot air outlet 218 are respectively opened on the frame 24. In this embodiment, there are two groups of hot air inlets 217 and hot air outlets 218 respectively, and the hot air inlets 217 and the hot air outlets 218 are arranged alternately. Specifically, in implementation, there can also be multiple groups of hot air inlets 217 and hot air outlets 218.

[0031] In this embodiment, the low-temperature drying mechanism is arranged behind the rolling mechanism.

[0032] In this embodiment, a maintenance opening 221 is provided at the bottom of the frame 24, and the maintenance opening 221 is arranged corresponding to the position of the low-temperature drying mechanism.

[0033] When the roll press belt filter and low-temperature drying integrated machine 2 is in use, the main belt motor drive mechanism 28 is started to drive the main belt driving wheel 26, the main belt driven wheel 25 and the main belt roll press wheel 210 to move; the roll press belt motor drive mechanism 213 is started to drive the roll press belt driving wheel 212, the roll press belt driven wheel 211 and the roll press belt adjustable roll press wheel 216 to move. Adjust the gap between the roll press belt adjustable roll press wheel 216 and the main belt roll press wheel 210. The wet material passes through the mixing storage hopper 21, the arch breaker 22, and the distributor 23 in sequence for bottom layer paving and then falls onto the main belt filter belt 27. After the wet material passes through the roll press filtration area, it then enters the low-temperature drying area. The hot air enters through the hot air inlet 217, exchanges heat with the material and the main belt filter belt 27, and then is discharged from the hot air outlet 218. Finally, the dry material is discharged from the discharge port 222.

[0034] When the utility model is in use, the specific steps are as follows:

[0035] (1) The wet slag material with a moisture content of 50% - 60% discharged from the centrifuge 1 enters the roll press belt filter and low-temperature drying integrated machine 2. After roll press dehydration and low-temperature drying, it is discharged as dry material through the discharge hopper 3, the discharge screw conveyor 4, the rotary valve 5, and the belt conveyor 6 in sequence;

[0036] (2) The tail gas discharged from the roll press belt filter and low-temperature drying integrated machine 2 is preliminarily cooled by the gas-gas heat exchanger 7, cooled again by the condenser 8, pressurized by the circulation fan 9, and heated by the heater 10, and then re-enters the roll press belt filter and low-temperature drying integrated machine 2 for dehydrating the material;

[0037] (3) The water separated by roll pressing and the wastewater condensed from the carrier gas after low-temperature drying are collected and discharged from the condenser 8.

[0038] The roll press belt filter and low-temperature drying integrated machine (2) described in the above step (1) has the functions of mechanical dehydration and low-temperature drying.

[0039] The heater (10) described in the above step (1) is a steam-type or electric-type heater.

[0040] The utility model processes gasification slag by combining mechanical dehydration and low-temperature drying, which is energy-saving and environment-friendly. A roll press belt filter and a low-temperature drying integrated machine are used to realize the dehydration of gasification slag. The dehydration effect can be flexibly adjusted, the drying temperature is low, the residue on the filter bag is easy to be completely removed, the circulating gas volume is small, and it is energy-saving and environment-friendly. The utility model is safe and reliable, with low investment cost. The centrifuge dehydrates to 50% - 60%, the roll press section dehydrates to 35% - 40%, the low-temperature drying section dehydrates to 25% - 30%, the heating temperature of the low-pressure carrier gas is 80°C - 95°C, the heat source is mild, far lower than the spontaneous combustion temperature point of the material, the drying process is safe and reliable, the system configuration is simple, the heat energy consumption is low, and at the same time, the equipment investment cost is low.

Claims

1. A new type of gasification slag dehydration system, characterized by: The system comprises a centrifuge (1), a roller-belt filter and low-temperature drying integrated machine (2), a discharge hopper (3), a discharge screw conveyor (4), a rotary valve (5), a belt conveyor (6), an air-to-air heat exchanger (7), a condenser (8), a circulating fan (9) and a heater (10). The centrifuge (1) and the feed inlet of the roller-belt filter and low-temperature drying integrated machine (2) are arranged opposite to each other, the discharge port of the roller-belt filter and low-temperature drying integrated machine (2) is arranged opposite to the discharge hopper (3), the discharge screw conveyor (4) is arranged below the discharge hopper (3), a rotary valve (5) is arranged at the end of the discharge screw conveyor (4), and the rotary valve (5) is arranged at the end of the discharge screw conveyor (4). 5) A belt conveyor (6) is arranged below, the hot air output end of the heater (10) is connected to the hot air inlet of the roller-type belt filter and low-temperature drying integrated machine (2), the hot air outlet of the roller-type belt filter and low-temperature drying integrated machine (2) is connected to the hot air inlet of the air-to-air heat exchanger (7), the hot air outlet of the air-to-air heat exchanger (7) is connected to the air inlet of the condenser (8), the air outlet of the condenser (8) is connected to the air inlet of the circulation fan (9), the air outlet of the circulation fan (9) is connected to the cold air inlet of the air-to-air heat exchanger (7), and the cold air outlet of the air-to-air heat exchanger (7) is connected to the cold air input end of the heater (10).

2. The novel gasified slag dehydration system according to claim 1 is characterized by: The heater (10) is a steam type heater or an electric type heater.

3. The novel gasified slag dehydration system according to claim 1 is characterized by: The roller-pressed belt filter and low-temperature drying integrated machine (2) comprises a frame (24), a feeding mechanism, a transmission mechanism, a roller-pressing mechanism, a low-temperature drying mechanism, a water outlet (220) and a material outlet (222), wherein the transmission mechanism is mounted in the frame (24), the feeding mechanism is mounted on the frame (24) and is arranged corresponding to the front end of the transmission mechanism, the material outlet (222) is mounted on the frame (24) and is arranged corresponding to the rear end of the transmission mechanism, the roller-pressing mechanism is mounted in the frame (24) and is arranged relative to the transmission mechanism, the low-temperature drying mechanism is arranged on the frame (24) and is arranged relative to the transmission mechanism, and the water outlet (220) is opened below the frame (24).

4. The novel gasified slag dehydration system according to claim 3 is characterized by: The transmission mechanism comprises a main belt driven wheel (25), a main belt driving wheel (26), a main belt filter belt (27), a main belt motor transmission mechanism (28), a main belt scraper (29) and a main belt roller (210). The main belt driven wheel (25) and the main belt driving wheel (26) are respectively arranged at the front and rear ends inside the frame (24). The main belt filter belt (27) is hung on the main belt driven wheel (25) and the main belt driving wheel (26). The filter belt (27) has filter holes, the main belt roller (210) is arranged between the main belt driven wheel (25) and the main belt driving wheel (26), the main belt motor transmission mechanism (28) is fixedly installed on the frame (24), the main belt motor transmission mechanism (28) is connected to the main belt driving wheel (26) through a belt, the main belt scraper (29) is arranged corresponding to the main belt filter belt (27), and the main belt scraper (29) is arranged corresponding to the upper part of the discharge port (222).

5. The novel gasified slag dehydration system according to claim 4 is characterized by: The roller pressing mechanism comprises a roller-belt driven wheel (211), a roller-belt driving wheel (212), a roller belt (215), a roller-belt adjustable roller wheel (216), a roller-belt scraper (214) and a roller-belt motor transmission mechanism (213), wherein the roller-belt driven wheel (211) and the roller-belt driving wheel (212) are respectively arranged at the front and rear ends, and the roller belt (215) is hung on the roller-belt driven wheel (211) and the roller-belt driving wheel (212). The belt-type adjustable roller pressure wheel (216) is arranged between the roller pressure belt driven wheel (211) and the roller pressure belt driving wheel (212); the roller pressure belt adjustable roller pressure wheel (216) is arranged opposite to the main belt roller pressure wheel (210); the roller pressure belt motor transmission mechanism (213) is fixedly mounted on the frame (24); the roller pressure belt motor transmission mechanism (213) is connected to the roller pressure belt driving wheel (212) via a belt; and the roller pressure belt scraper (214) is arranged corresponding to the roller pressure belt (215).

6. The novel gasified slag dehydration system according to claim 3 is characterized by: The drainage port (220) is arranged corresponding to the lower portion of the roller pressing mechanism.

7. The novel dehydration system for gasification slag according to claim 3, wherein: The feeding mechanism comprises a mixed material hopper (21), an arch breaker (22) and a distributor (23); a feed inlet (219) is provided above the mixed material hopper (21); the arch breaker (22) and the distributor (23) are arranged in the mixed material hopper (21); and the distributor (23) is arranged below the arch breaker (22).

8. The novel gasified slag dehydration system according to claim 3 is characterized by: The low-temperature drying mechanism comprises a hot air inlet (217) and a hot air outlet (218), the hot air inlet (217) and the hot air outlet (218) are respectively arranged on the frame (24), and at least two groups of the hot air inlet (217) and the hot air outlet (218) are respectively arranged, and the hot air inlet (217) and the hot air outlet (218) are arranged alternately.

9. The novel gasified slag dehydration system according to claim 3 is characterized by: The low-temperature drying mechanism is arranged behind the rolling mechanism.

10. The novel gasified slag dehydration system according to claim 3 is characterized by: The bottom of the frame (24) is provided with an inspection opening (221), and the inspection opening (221) is arranged corresponding to the position of the low-temperature drying mechanism.

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