CN-224215739-U - Coarse slag dewatering device for coal water slurry gasification

Abstract

The utility model discloses a coarse slag dewatering device for gasifying coal water slurry, wherein a slag dragging machine is communicated with a coarse slag feeding bin, the coarse slag feeding bin is communicated with a vibrating screen through a three-way flap valve, the vibrating screen is communicated with a coarse slag discharging bin, and the bottom of the coarse slag discharging bin is communicated to a slag car through a plugboard discharge valve. The upper parts of the coarse slag feeding bin and the coarse slag discharging bin are respectively provided with a steam coil, and the steam coils are horizontally arranged in an upper inlet and lower outlet mode. And the side walls at the bottoms of the coarse slag feeding bin and the coarse slag discharging bin are respectively provided with a vibrator, so that slag blockage in the slag discharging process is prevented. The coal gasification coarse slag dehydration device has the advantages of simple structure, compact arrangement, low energy consumption and low pollution, can realize the slag-water separation effect after being put into use, ensure the sanitary environment of a coarse slag transportation production site, and reduce the steam operation cost.

Inventors

• ZHU PAICHANG
• LI XU
• WAN HAO
• LI YUE
• XIANG WEIWEI

Assignees

• 宜都兴发化工有限公司

Dates

Publication Date

20260508

Application Date

20250326

Claims (4)

1. 1. The utility model provides a coarse sediment dewatering device of coal slurry gasification, its characterized in that drags for sediment machine (1) and coarse sediment feeding storehouse (2) intercommunication, coarse sediment feeding storehouse (2) are through tee bend flap valve (4) and shale shaker (5) intercommunication, shale shaker (5) and coarse sediment ejection of compact storehouse (6) intercommunication, coarse sediment ejection of compact storehouse (6) bottom is through picture peg discharge valve (7) intercommunication to slag car (10), coarse sediment feeding storehouse (2) all are provided with steam coil pipe (3) with coarse sediment ejection of compact storehouse (6) upper portion, and steam coil pipe (3) all adopt the horizontal arrangement, go up the mode of going into from top to bottom, coarse sediment feeding storehouse (2) all set up vibrator (12) with the bottom lateral wall of coarse sediment ejection of compact storehouse (6), the dehydration sieve of shale shaker bottom presents 2-5 tilt angle, increases coarse sediment dehydration dwell time, and the end of shale shaker (5) has 10-15 angle to the junction of coarse sediment ejection of compact storehouse (6), makes coarse sediment from the foremost of the vibratory sediment storehouse go out (6).
2. 2. The coarse slag dewatering device for gasifying coal water slurry according to claim 1, wherein the top of the coarse slag feeding bin (2) is communicated with an induced draft fan (8) through a pipeline, one path of the induced draft fan (8) is emptied, and the other path of the induced draft fan is communicated with a slag dragging machine (1) through a condensation pipeline.
3. 3. The coarse slag dewatering device for water-coal-slurry gasification according to claim 1, wherein the top of the coarse slag discharging bin (6) is communicated with an exhaust fan (9), one path of the exhaust fan (9) is emptied, and the other path of the exhaust fan is communicated with the slag dragging machine (1) through a condensation pipeline.
4. 4. The coarse slag dewatering device for coal water slurry gasification according to claim 1, wherein the coarse slag feeding bin (2) is further connected with a slag car (10) through a three-way flap valve (4).

Description

Coarse slag dewatering device for coal water slurry gasification Technical Field The utility model belongs to the technical field of slag-water separation, and particularly relates to a coarse slag dehydration device for coal water slurry gasification. Background The coarse slag produced by the coal water slurry gasification process belongs to slag solid waste, the temperature of the coarse slag is still 65 ℃ after water chilling, the coarse slag is fished out by a scraper of a slag scooping machine and then falls into a carriage of an automobile, the water content of the coarse slag is up to 55% due to the influence of the characteristics of coarse slag materials, a large amount of black water can leak to the ground from gaps at the bottom of the carriage in the continuous slag collecting process, a production area is polluted, meanwhile, the automobile has to stay for a long time to filter water after being filled with the coarse slag, so that the automobile can be transported out of a factory, otherwise, the surrounding environment is polluted in the transportation process, and in addition, the coarse slag with high water content adopts a steam transportation mode, so that the daily transportation cost is higher. Disclosure of Invention In order to solve the technical problems, the utility model adopts the technical scheme that the coarse slag dehydration device is used for dehydration treatment and has the characteristics of simple installation, compact arrangement, low energy consumption and low pollution, and comprises a slag inlet pretreatment unit, a vibrating screen dehydration unit and a slag discharge post-treatment unit; In the preferred scheme, the slag inlet pretreatment unit comprises a coarse slag feeding bin, an induced draft fan, a steam coil pipe, a vibrator, a three-way flap valve and a high-position emptying low-position drainage auxiliary pipeline; In the preferred scheme, a spare port flashboard discharge valve is arranged below the three-way flap valve of the slag inlet pretreatment unit, and once the vibrating screen dehydration unit or the post-treatment unit fails or overhauls, coarse slag can be directly loaded without being dehydrated temporarily. In the preferred scheme, the vibrating screen dehydration unit comprises a vibrating screen, a screen plate is arranged in a climbing mode, stainless steel materials are adopted for the screen plate, slag-water separation is carried out on coarse slag, and clean black water after separation overflows to a front bin of a slag dragging machine through a chute for recycling. In the preferred scheme, the post-treatment unit comprises a coarse slag discharging bin, a steam coil pipe, a vibrator, a plugboard discharge valve, an exhaust fan and a high-altitude emptying low-altitude drainage auxiliary pipeline. Aiming at the device for dehydrating the coarse slag in the coal water slurry gasification, which is provided by the unit, the slag dragging machine is communicated with the coarse slag feeding bin, the coarse slag feeding bin is communicated with the vibrating screen through the three-way flap valve, the vibrating screen is communicated with the coarse slag discharging bin, and the bottom of the coarse slag discharging bin is communicated to the slag car through the flashboard discharge valve. The upper parts of the coarse slag feeding bin and the coarse slag discharging bin are respectively provided with a steam coil, and the steam coils are horizontally arranged in an upper inlet and lower outlet mode. And the side walls at the bottoms of the coarse slag feeding bin and the coarse slag discharging bin are respectively provided with a vibrator, so that slag blockage in the slag discharging process is prevented. The top of the coarse slag feeding bin is communicated with an induced draft fan through a pipeline, one path of the induced draft fan is emptied, one path is communicated with the slag dragging machine through a condensation pipeline. The top of the coarse slag discharging bin is communicated with an exhaust fan, one path of the exhaust fan is exhausted, one path is communicated with the slag dragging machine through a condensation pipeline. The dehydration sieve plate at the bottom of the vibrating screen presents an inclined angle of 2-5 degrees, so that the dehydration residence time of coarse slag is prolonged. The dewatering screen plate of the vibrating screen is assembled by a plurality of blocks, so that the dewatering screen plate is convenient to be partially disassembled and replaced, the dewatering screen plate is arranged in a climbing way of 2-5 degrees, and the dewatering residence time of coarse slag is prolonged. The joint between the tail end of the vibrating screen and the coarse slag discharging bin has an inclined angle of 10-15 degrees, so that coarse slag slides into the coarse slag discharging bin from the forefront end of the vibrating screen. The coarse slag feeding bin is also connected with a slag c