Coal water slurry gasification coarse slag belt conveying device

Abstract

The utility model discloses a coal water slurry gasification coarse slag belt conveying device which comprises a gasification furnace, a slag salvaging machine capable of storing gasification coarse slag is correspondingly arranged at an outlet below the gasification furnace, a dewatering device is arranged at an outlet of the slag salvaging machine, a slag hopper is arranged below the dewatering device, and the slag hopper is connected with the gasification furnace. A first conveying device is arranged below the slag hopper and used for conveying waste slag discharged by the dewatering device to a slag yard bin where the waste slag can be stacked, a second conveying device extending out is arranged in the slag yard bin, and the tail end of the second conveying device can be arranged above the ship body. And the transportation and maintenance cost is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a belt conveying device, more specifically, relate to a water coal slurry gasification coarse slag belt conveying device, belong to the field of petrochemical industry. BACKGROUND

[0002] The main principle of water coal slurry gasification is that coal slurry and oxygen enter the gasification furnace through process burner coaxial jet, and the gasification reaction condition is about 6.5MPa and about 1320 DEG C. The combustion chamber is lined with refractory bricks. The generated coarse synthesis gas is a mixture of H2, CO, CO2 and water vapor. The unconverted components in the coal form ash slag with the coal ash, and most of the ash slag falls into the bottom of the washing and cooling chamber after cooling.

[0003] At present, more than 95% of coal gasification units use slag cars for transportation. Due to poor sealing, wear and tear, corrosion and other conditions, water and coarse slag in the slag car will flow out of the slag car, causing environmental pollution on site, and also flowing out of the car during transportation, causing road pollution during transportation. The overall cost of slag car transportation is high, and the vehicle maintenance, maintenance and daily maintenance cost is high, so the use of belt transportation instead of existing automobile transportation is studied to reduce environmental pollution and transportation cost. UTILITY MODEL CONTENT

[0004] In order to solve the above technical problems, the utility model provides a water coal slurry gasification coarse slag belt conveying device which can solve the problems of poor environmental pollution caused by current coarse slag transportation and high transportation and maintenance cost.

[0005] In order to achieve the above purpose, the utility model is realized by the following technical scheme:

[0006] The utility model relates to a water coal slurry gasification coarse slag belt conveying device, which comprises a gasification furnace, a slag extractor capable of storing gasification coarse slag is arranged corresponding to the outlet below the gasification furnace, a dewatering device is arranged at the outlet of the slag extractor, a slag hopper is arranged below the dewatering device, a first conveying device is arranged below the slag hopper for conveying the waste slag discharged from the dewatering device to a slag field bin capable of stacking waste slag, a second conveying device is arranged to extend in the slag field bin, and the end of the second conveying device can be arranged above the ship body.

[0007] Preferably, the outlet of the gasification furnace is connected with a lock hopper through a pipeline, and the outlet of the lock hopper is connected with the inlet end of the slag extractor through a pipeline.

[0008] Preferably, the slag extractor comprises a storage bin, the storage bin is connected with a conveying pipeline, and a threaded conveying rod driven by a motor is arranged in the conveying pipeline.

[0009] Preferably, the first conveying device comprises two groups of belt conveying structures, each group of belt conveying structures comprises two first driving rollers arranged at intervals, and a first conveying belt is arranged between the two driving rollers and is tensioned, at least one driving roller in each group of belt conveying structures is connected with a first motor through a speed reducer; the first conveying belts in the two groups of belt conveying structures are arranged in parallel and at intervals, the lower first conveying belt extends to the right with an extension, the lower end of the slag hopper is provided with two discharge ports, the two discharge ports form an inverted V-shaped structure, and the two discharge ports are respectively arranged at the right ends of the two first conveying belts.

[0010] Preferably, the second conveying device comprises two second driving rollers arranged at intervals, a second conveying belt is arranged between the two second driving rollers and is tensioned, and at least one second driving roller is connected with a second motor through a speed reducer.

[0011] Preferably, the dehydration device comprises a cylinder, a plurality of guide plates arranged alternately and inclined downward are arranged in the cylinder from top to bottom for conveying gasified coarse slag, a microwave inlet is connected to the upper end of the cylinder, an air heater is connected to the lower end of the cylinder, and a product storage tank is connected to the lower end of the cylinder through a pipeline.

[0012] Preferably, the upper end of the cylinder is connected with an air compressor through a pipeline provided with a rotor flowmeter.

[0013] Preferably, the air compressor, the air heater and the motors are in communication connection with the controller.

[0014] Beneficial effects: simple structure, strong practicability, continuous use, change of coarse slag transportation from automobile to belt conveying, reduction of leakage of slag and water due to poor sealing of the automobile, reduction of pollution of the site and the transportation road, reduction of automobile maintenance cost, realization of energy saving and consumption reduction, and pollution-free conveying, solution of the problems of poor environmental pollution and high transportation and maintenance cost caused by coarse slag transportation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a schematic diagram of the overall structure of the utility model.

[0016] Fig. 2 is a schematic diagram of the dehydration device structure of the utility model. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0018] In the description of the utility model, it should be explained that the positions or location relations indicated by the terms "upper", "lower", "inner", "outer", "left", "right" and the like are the positions or location relations shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model.

[0019] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, or indirectly connected through intermediate medium, and those skilled in the art can understand the specific meanings of the above terms in the utility model according to specific circumstances.

[0020] The patent provides a water coal slurry gasification coarse slag belt conveying device, when the gasification coarse slag is fished out from the slag extractor, falls into the slag conveying belt after the dehydration device, is conveyed to the slag yard by the slag conveying belt, and is finally uniformly sent out by the ship loader.

[0021] As Figs. 1-2 shown is a specific embodiment of a water coal slurry gasification coarse slag belt conveying device, the embodiment of a water coal slurry gasification coarse slag belt conveying device, including gasification furnace 1, the outlet of the gasification furnace 1 below is correspondingly provided with the slag extractor 2 capable of storing gasification coarse slag, the outlet of the slag extractor 2 is provided with the dehydration device 4, the dehydration device 4 below is provided with the slag hopper 5, the slag hopper 5 below is provided with a first conveying device for conveying the waste slag discharged by the dehydration device 4 to the slag yard warehouse 6 capable of stacking waste slag, the slag yard warehouse 6 is provided with the second conveying device extending in, and the end of the second conveying device can be located above the ship body. The present application realizes the change of the current coarse slag from automobile transportation to belt conveying, reduces the leakage of slag and water due to the poor sealing of the automobile, causes the pollution of the site and the transportation road, reduces the automobile maintenance cost at the same time, realizes energy saving and consumption reduction and pollution-free conveying.

[0022] Preferably, the gasifier 1 outlet is connected with a lock hopper 3 through pipeline, the lock hopper 3 outlet is connected with the inlet end of the slag conveyer 2 through pipeline; the lock hopper 3 belongs to a silo with opening and closing door, which realizes precise and efficient unloading. The slag discharge of the lock hopper can be controlled by a set of logic interlocking automatic control system, and each cycle is about 30 minutes, in which the slag collection time is 28 minutes and the discharge time is about 2 minutes. The slag at the bottom of the washing and cooling chamber and a small amount of residual carbon not gasified are collected in the lock hopper through the lock hopper inlet valve. According to the lock hopper sequence control cycle, the slag is discharged, the lock hopper continues the slag collection of the next cycle, the discharged coarse slag enters the slag conveyer 2, and the slag collected in the slag conveyer 2 is scraped out by the scraper slag conveyer, and then is loaded into the slag car after the water content is reduced to about 40% by the dewatering device and is transported to the storage area.

[0023] Preferably, the slag conveyer 2 comprises a receiving bin, the receiving bin is connected with a conveying pipeline, the conveying pipeline is provided with a threaded conveying rod driven by a motor, and the threaded conveying rod is used for conveying and feeding. The specific structure of the slag conveyer 2 is not limited in the application, and the slag conveyer 2 can also use a claw to grab and take out.

[0024] Preferably, the first conveying device comprises two groups of belt conveying structures, each group of belt conveying structures comprises two first driving rollers arranged at intervals, a first conveying belt is arranged between the two driving rollers and is tensioned, and at least one driving roller in each group of belt conveying structures is connected with a first motor through a speed reducer; the first conveying belts in the two groups of belt conveying structures are arranged in parallel and at intervals, the lower first conveying belt extends to the right with an extension part, the lower end of the slag bucket 5 is provided with two discharge ports, the two discharge ports form an inverted V-shaped structure, and the two discharge ports are arranged at the right ends of the two first conveying belts, respectively, the multi-layer design improves the efficiency and stability, facilitates interval shutdown for maintenance, and the inverted V-shaped structure can realize efficient feeding of the material slag at the left and right ends of the slag bucket 5. The second conveying device comprises two second driving rollers arranged at intervals, a second conveying belt is arranged between the two second driving rollers and is tensioned, and at least one second driving roller is connected with a second motor through a speed reducer.

[0025] Characteristics of the gasification coarse slag belt conveying device:

[0026] (1) Strong continuity: the belt conveyor can work continuously, and the production efficiency is high.

[0027] (2) Long conveying distance: a single conveyor or through an intermediate transfer station can realize long-distance conveying. At present, the belt conveying device used by the unit is more than 1000 meters, which can continuously convey, and the conveying performance is good.

[0028] (3) Large capacity: according to the bandwidth and running speed, the conveying capacity range is wide.

[0029] (4) Simple structure: the equipment structure is simple, and maintenance is convenient.

[0030] (5) Strong adaptability: can work in various harsh environments, such as high temperature, dust, corrosive gas, etc.

[0031] (6) Low cost: compared with the traditional coal gasification truck transportation mode, the initial investment and operation cost of the belt conveyor is low.

[0032] In a preferred embodiment, the dewatering device 4 (coal gasification slag dewatering) comprises a cylinder 7, a plurality of guide plates 8 are arranged alternately and downwardly inclined in the cylinder 7 from top to bottom for conveying gasification coarse slag, a microwave inlet 9 is connected near the upper end of the cylinder 7, an air heater 10 is connected near the lower end of the cylinder 7, a product storage tank 11 is connected to the lower end of the cylinder 7 through a pipeline, and an air compressor 12 is connected to the upper end of the cylinder 7 through a pipeline with a rotor flowmeter.

[0033] The dehydration device 4 is specially designed for the dehydration treatment of the gasification slag generated in the coal gasification process, and is a high-efficiency and precise system. The core component of the device is a cylinder 7, which not only constitutes the main container of the entire dehydration process, but also optimizes the conveying and dehydration process of the gasification coarse slag through the design of its internal structure. The internal structure of the cylinder 7 is ingeniously designed, and multiple guide plates 8 are arranged from top to bottom. These guide plates are not simply arranged, but are arranged in an alternating manner, and each guide plate is inclined downward at a certain angle. The design has two main purposes: one is to effectively guide the gasification coarse slag to slide smoothly along the guide plates, avoiding the accumulation and blockage of the material in the cylinder; the second is to increase the contact area of the gasification slag with microwaves and hot air through the gap between the guide plates, promoting the rapid evaporation of water, thereby improving the dehydration efficiency. At the upper end of the cylinder 7, a microwave inlet 9 is connected. As a non-contact heating method, microwaves can penetrate the interior of the gasification slag, causing the water molecules inside to vibrate rapidly and generate heat, thereby achieving the effect of internal heating and removing water. The introduction of microwaves not only greatly improves the dehydration speed, but also ensures the uniformity and completeness of the dehydration process. At the lower end of the cylinder 7, an air heater 10 is connected. The function of the air heater is to provide continuous hot air flow in the cylinder, which can not only help to further remove residual water in the gasification slag, but also accelerate the uniform distribution of the internal temperature of the cylinder through thermal convection, ensuring the consistency of the dehydration effect. The lower end of the cylinder 7 is connected to a product storage tank 11 through a carefully designed pipeline. Once the gasification slag completes the dehydration treatment, it will smoothly enter the storage tank through the pipeline, waiting for subsequent use or processing. Such a design not only simplifies the operation process, but also ensures the cleanliness, neatness and easy management of the dehydrated product. In addition, the upper end of the cylinder 7 is connected to an air compressor 12 through a pipeline with a rotor flow meter. The presence of the rotor flow meter can accurately control and monitor the air flow entering the cylinder, ensuring that the air flow provided by the air compressor can meet the needs of the dehydration process without causing energy waste or environmental impact. The air compressor is responsible for providing stable and sufficient air source for the entire system, ensuring the smooth progress of the dehydration process. In summary, the dehydration device 4 realizes efficient, rapid and environmentally friendly dehydration treatment of coal gasification slag through its ingenious design and reasonable structural layout, and contributes to the sustainable development of the coal gasification industry.

[0034] Preferably, one embodiment also includes a controller, and the air compressor 12, air heater 10 and each motor are in communication with the controller.

[0035] Finally, it should be noted that the utility model is not limited to the above embodiments, but can have many variations. All variations that can be directly derived or thought of from the content disclosed in the utility model by those of ordinary skill in the art should be considered as falling within the scope of protection of the utility model.

Claims

1. A water coal slurry gasification coarse slag belt conveying device, characterized in that: The application relates to a gasification furnace (1) which is provided with a slag extractor (2) capable of storing gasification coarse slag below the outlet of the gasification furnace (1), a dehydration device (4) is arranged at the outlet of the slag extractor (2), a slag bucket (5) is arranged below the dehydration device (4), a first conveying device is arranged below the slag bucket (5) for conveying the waste slag discharged from the dehydration device (4) to a slag field warehouse (6) capable of piling up the waste slag, a second conveying device is arranged in the slag field warehouse (6) and can be arranged above a ship body.

2. The water coal slurry gasification coarse slag belt conveyor device according to claim 1, characterized in that: The outlet of the gasification furnace (1) is connected with a lock hopper (3) through a pipeline, and the outlet of the lock hopper (3) is connected with the inlet end of the slag extractor (2) through a pipeline.

3. The water coal slurry gasification coarse slag belt conveyor device according to claim 1 or 2, characterized in that: The slag extractor (2) comprises a storage bin, the storage bin is connected with a conveying pipeline, and a screw conveying rod driven by a motor is arranged in the conveying pipeline.

4. The water coal slurry gasification coarse slag belt conveyor device according to claim 1, characterized in that: The first conveying device comprises two groups of belt conveying structures, each group of belt conveying structures comprises two first driving rollers which are arranged at intervals, a first conveying belt is arranged between the two driving rollers and is in tension, at least one driving roller in each group of belt conveying structures is connected with a first motor through a speed reducer; the first conveying belts in the two groups of belt conveying structures are arranged in parallel and at intervals, the lower first conveying belt extends to the right and has an extension part, the lower end of the slag bucket (5) is provided with two discharge ports, the two discharge ports form an inverted V-shaped structure, and the two discharge ports are respectively arranged at the right ends of the two first conveying belts.

5. The water coal slurry gasification coarse slag belt conveyor device according to claim 1 or 4, characterized in that: The second conveying device comprises two second driving rollers which are arranged at intervals, a second conveying belt is arranged between the two second driving rollers and is in tension, and at least one second driving roller is connected with a second motor through a speed reducer.

6. The water coal slurry gasification coarse slag belt conveyor device according to claim 5, characterized in that: The dehydration device (4) comprises a cylinder (7), a plurality of guide plates (8) which are arranged alternately and are inclined downward are arranged in the cylinder (7) from top to bottom for conveying the gasification coarse slag, a microwave inlet (9) is arranged close to the upper end of the cylinder (7), an air heater (10) is arranged close to the lower end of the cylinder (7), and a product storage tank (11) is connected with the cylinder (7) through a pipeline.

7. The water coal slurry gasification coarse slag belt conveyor device according to claim 6, characterized in that: The upper end of the cylinder (7) is connected with an air compressor (12) through a pipeline provided with a rotor flowmeter.

8. The water coal slurry gasification coarse slag belt conveyor device according to claim 1, characterized in that: A controller is further arranged, and the air compressor (12), the air heater (10) and the motors are in communication connection with the controller.

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