Coal-to-methanol gasification fine slag transfer system

Abstract

A coal-to-methanol gasification fine slag transfer system is characterized in that a material inlet of a slag receiving device is arranged right below a filter press, a material outlet of the slag receiving device is communicated with a branch conveying line, a chute is arranged between the branch conveying line and two main conveying lines and is used for communicating the branch conveying line with the main conveying lines, and the filter press, the slag receiving device, the branch conveying lines and the chute are in one-to-one correspondence; the branch conveying lines are communicated with a feeding port of the chute three-way reversing valve, one discharging port of the three-way reversing valve is communicated with the first channel, the other discharging port of the three-way reversing valve is communicated with the second channel, a discharging port of the first channel is communicated with one main conveying line, and the second channel is communicated with the other main conveying line; in this way, the multiple branch conveying lines are gathered to the main conveying lines, the two main conveying lines are arranged, useful and standby purposes are achieved, and the requirement for large-scale factory production is met.

Description

Technical Field

[0001] The utility model relates to the technical field of fine slag transfer in coal - to - methanol production, and specifically, to a fine slag transfer system for coal - to - methanol gasification. Background Technique

[0002] The latest improvement in fine slag dehydration in the coal - to - methanol process is to use a plate - and - frame filter press for fine slag dehydration work, which can reduce the water content of the filter cake after dehydration from 50% to about 30%. However, because it is a new equipment process, many problems will occur during large - scale industrial application. First of all, the scale of fine slag produced in coal - to - methanol is very large, and at least more than 14 filter presses need to work simultaneously, so a fine slag treatment and transfer system suitable for industrial operation is required. Secondly, during the process of fine slag feeding, water vapor and fly ash flocs are mixed, which is a characteristic of the fine slag produced in the coal - to - methanol process. This makes the working pipeline prone to sticking to fly ash flocs and fine slag, thus seriously blocking the passage, and the dredging is slow and difficult. Moreover, when the water content of the fine slag decreases, the fine slag is particularly prone to dust raising, and the dust raising and ash slag splashing problems in the entire production line are very serious. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a fine slag transfer system for coal - to - methanol gasification, which is a suitable industrial operation fine slag transfer system for coal - to - methanol gasification that solves problems such as pipeline blockage and dust raising.

[0004] The utility model provides a fine slag transfer system for coal - to - methanol gasification, which includes a filter press, a slag receiving device, a sub - conveyor line, a chute, and two main conveyor lines. The feeding port of the slag receiving device is directly below the filter press. The discharge port of the slag receiving device is communicated with the sub - conveyor line. The chute is arranged between the sub - conveyor line and the two main conveyor lines and is used to connect the sub - conveyor line and the main conveyor lines. The filter press, the slag receiving device, the sub - conveyor line, and the chute are in one - to - one correspondence. The chute includes a three - way reversing valve, a first channel, and a second channel. The sub - conveyor line is communicated with the feeding port of the three - way reversing valve. One discharge port of the three - way reversing valve is communicated with the first channel, and the other discharge port is communicated with the second channel. The discharge port of the first channel is communicated with one main conveyor line, and the second channel is communicated with the other main conveyor line.

[0005] The fine slag produced from coal - to - methanol requires at least more than 14 filter presses to work simultaneously. Considering the need for spares, a factory needs to configure 16 to 18 filter presses to meet the demand and facilitate maintenance. Without reasonable planning, the on - site work efficiency will often be affected. This solution is to equip each filter press with a slag - receiving device, a branch conveyor line, and a chute equipped with a three - way reversing valve. Each chute has two discharge ports corresponding to two side - by - side main conveyor lines, and there are several chutes on the main conveyor line. In this way, on the one hand, the filter presses can be independent of each other whether they are working, under maintenance, or being inspected, without mutual influence; on the other hand, by equipping the chute with two main conveyor lines, one for standby and one for use, high - efficiency operation is achieved, which is suitable for large - scale industrial production.

[0006] Preferably, it further includes two floor plates, which divide the space into an upper layer, a middle layer, and a lower layer; the filter presses are arranged in the upper layer, the slag - receiving devices and the branch conveyor lines are arranged in the middle layer, the slag - receiving devices penetrate the floor plates and connect the upper layer and the middle layer, the chutes and the main conveyor lines are arranged in the lower layer, and the chutes penetrate the floor plates and connect the middle layer and the lower layer.

[0007] The space division creates a level difference for both equipment and personnel. Personnel on one floor are responsible for the same equipment, which is convenient for management and responsibility division. Moreover, there is enough space to reduce the mutual influence between equipment, which is suitable for factory division of labor and management.

[0008] Preferably, the valve plate of the chute three - way reversing valve, the inner wall of the chute three - way reversing valve, the inner wall of the first channel of the chute, and the inner wall of the second channel of the chute are all made of mirror - polished stainless steel.

[0009] The material entering the filter press is hot, and the filter cake also contains hot air and water vapor. During the later stage of crushing and transporting the filter cake, there is also dust - raising phenomenon. As a static pipeline passage, the chute often adheres to a layer of fine slag on the inner wall. Coupled with the corrosiveness of the fine slag, various materials used to make the chute before all have problems such as easy rusting, being corroded, pipeline blockage, and difficult dredging. Until the mirror - polished stainless steel material of this solution is used, because mirror - polished stainless steel does not rust and has a small friction coefficient, the problem of chute rusting and corrosion is solved, and the pipeline does not adhere to fine slag, so there is no problem of pipeline blockage that needs to be dredged.

[0010] Preferably, both the branch conveyor line and the main conveyor line are composed of belt conveyors. Preferably, both the branch conveyor line and the main conveyor line are composed of grooved - belt conveyors.

[0011] Fine slag is more suitable for belt conveyors. For extremely fine slag, grooved - belt conveyors are more appropriate.

[0012] Preferably, it further includes a shock-absorbing support. The chute passage is vertically arranged in a V shape above the main conveyor line. A shock-absorbing support is provided on the lower side of the belt of the belt conveyor at the position of the main conveyor line corresponding to the chute discharge port. The shock-absorbing support is made of a hard material, and its shape corresponds to that of the belt. The shock-absorbing support is in contact with the lower side of the belt, and the two sides of the shock-absorbing support perpendicular to the belt transportation direction are arc angles bent downward. The size of the side of the shock-absorbing support facing the chute discharge port is one circle larger than the size of the chute discharge port.

[0013] The materials in the chute fall onto the main conveyor line. To reduce the damage to the belt conveyor, a shock-absorbing support is provided at the position corresponding to the chute discharge port. After the materials fall onto the belt, they are carried by the shock-absorbing support and the potential energy is absorbed, reducing the damage of the materials to the belt and extending the service life of the belt.

[0014] Preferably, it further includes a conveyor line dust reduction device. The conveyor line dust reduction device arranged above the sub-conveyor line and the main conveyor line includes an extension surface, an inclined surface, and a flexible baffle. The extension surface located above the belt of the sub-conveyor line is arranged along the length direction of the sub-conveyor line and corresponds to the length of the sub-conveyor line. The two sides of the extension surface in the length direction extend inwardly and obliquely to form inclined surfaces. The free ends of the inclined surfaces are located above the inner side of the belt of the sub-conveyor line. One end of the flexible baffle is fixed to the inclined surface, and the other free end hangs down to both sides of the belt of the sub-conveyor line. The extension surface, the inclined surface, the flexible baffle, and the belt enclose a closed material conveying space. The discharge port of the slag receiving device penetrates through the extension surface and communicates with the material conveying space of the sub-conveyor line. The extension surface located above the belt of the main conveyor line is arranged along the length direction of the main conveyor line and corresponds to the length of the main conveyor line. The two sides of the extension surface in the length direction extend inwardly and obliquely to form inclined surfaces. The free ends of the inclined surfaces are located above the inner side of the belt of the main conveyor line. One end of the flexible baffle is fixed to the inclined surface, and the other free end hangs down to both sides of the belt of the main conveyor line. The extension surface, the inclined surface, the flexible baffle, and the belt enclose a closed material conveying space. The chute discharge port penetrates through the extension surface and communicates with the material conveying space of the main conveyor line.

[0015] After the water content of the fine slag is reduced, the phenomenon of dust flying is particularly obvious during the transfer process, making the working environment poor. A conveyor line dust reduction device matching the groove-type belt conveyors of the sub-conveyor line and the main conveyor line is designed. The extension surface shields from above, and the inclined surface inclines inward, thus applying force to the flexible baffle so that the flexible baffle can contact both sides of the belt as closely as possible. In this way, a closed material conveying space is formed. The conveyor line dust reduction device cooperates with the slag receiving device and the chute to achieve overall enclosure during the transfer process, so that the dust will not escape, greatly improving the working environment and reducing the loss of fine slag.

[0016] Preferably, it further includes a machine head cover. The machine head cover covers both the end of the sub-conveyor line and the inlet of the chute three-way reversing valve at the same time. The machine head cover is hermetically connected to the extension surface on the sub-conveyor line, that is, the material conveying space communicates with the inner space of the machine head cover. The bottom of the machine head cover extends to the ground.

[0017] The addition of the nose hood structure is also to reduce the fine slag dust during the process from the sub-conveyor line to the chute. It realizes that the dropping process is also carried out in a closed space, and no fine slag dust will escape. The nose hood can be fixed to the ground according to specific circumstances or can be movable, which is convenient for maintenance.

[0018] Preferably, it further includes inspection windows, which include a chute inspection window, a nose hood inspection window, and a conveyor line dust reduction device inspection window; a chute inspection window is provided on each of the first channel and the second channel; a section inclined to the ground is provided on one side of the nose away from the sub-conveyor line, and a nose hood inspection window is provided on the inclined section; a conveyor line dust reduction device inspection window is provided at intervals on the extension surface.

[0019] Because a closed transportation line is formed, inspection windows are added at each key part, which is convenient to understand the internal situation, convenient for maintenance, and realizes quick troubleshooting and quick maintenance.

[0020] Preferably, the slag receiving device includes a hopper and a cutting mesh. The hopper is in the shape of a quadrangular frustum with a large opening and a small outlet. The outlet of the hopper is closed by the cutting mesh. The cutting mesh is a thick mesh formed by the criss-cross of triangular prisms, and one angle of all triangular prisms faces the side of the hopper inlet.

[0021] The filter cake discharged by the filter press is in large pieces. When the filter cake falls into the slag receiving device, the gravitational potential energy cooperates with the cutting mesh to cut the large filter cake into small pieces, which has a good effect and is convenient for transfer.

[0022] Preferably, it further includes a protective net. The protective net is made of a hard material and is a fine mesh. A circle of movable protective net is provided between the main beam of the filter press and the ground.

[0023] When the filter press discharges the filter cake, sometimes there is sticky filter cake, resulting in the filter cake not falling vertically but falling to both sides, which is very dangerous. It is necessary to add a protective net to improve the safety of the working environment.

[0024] This solution is a fine slag treatment and transfer system suitable for large-scale industrialized work. The equipment and personnel are clearly divided into levels and functions, useful and prepared, and can realize maintenance while ensuring normal work, with high work efficiency. Moreover, the static chute is optimized, not corroded and not blocked, ensuring smooth operation. It also solves the problem of dust from fine slag with low water content, and the whole working environment is good and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a coal-to-methanol gasification fine slag transfer system in a preferred embodiment.

[0026] Figure 2A cross-sectional view of the chute in the coal-to-methanol gasification fine slag transfer system of a preferred embodiment.

[0027] Figure 3 A cross-sectional view of the shock-absorbing support part in the coal-to-methanol gasification fine slag transfer system of a preferred embodiment.

[0028] Figure 4 A cross-sectional view of the dust reduction device for the conveyor line in the coal-to-methanol gasification fine slag transfer system of a preferred embodiment.

[0029] Figure 5 A schematic structural view of the slag receiving device in the coal-to-methanol gasification fine slag transfer system of a preferred embodiment.

[0030] In the figure: filter press 10, slag receiving device 20, hopper 21, cutting mesh 22, sub-conveyor line 30, chute 40, three-way reversing valve 41, first channel 42, second channel 43, main conveyor line 50, floor slab 60, shock-absorbing support 70, dust reduction device for the conveyor line 80, extension surface 81, inclined surface 82, flexible baffle 83, machine head cover 90, inspection window 100, chute inspection window 101, machine head cover inspection window 102, dust reduction device for the conveyor line inspection window 103, protective net 110. Specific embodiments

[0031] In order to make the technical solution of the present utility model easier to understand, the technical solution of the present utility model will be clearly and completely described by way of specific embodiments in combination with the accompanying drawings.

[0032] A coal-to-methanol gasification fine slag transfer system includes a filter press 10, a slag receiving device 20, a sub-conveyor line 30, a chute 40, two main conveyor lines 50, two floor slabs 60, a shock-absorbing support 70, a dust reduction device for the conveyor line 80, a machine head cover 90, an inspection window 100, and a protective net 110.

[0033] Specifically, referring to the attached Figure 1As shown in the figure, two floor slabs 60 divide the space into an upper layer, a middle layer and a lower layer. The filter press 10 is arranged in the upper layer. The protective net 110 is a fine mesh made of hard material. A movable protective net 110 is arranged in a circle between the main beam of the filter press 10 and the ground. The feeding port of the slag receiving device 20 is directly below the filter press 10; the slag receiving device 20 penetrates through the floor slab 60 and communicates with the upper layer and the middle layer. The slag receiving device 20 and the sub-conveyor line 30 are arranged in the middle layer. The discharge port of the slag receiving device 20 is communicated with the sub-conveyor line 30; the chute 40 penetrates through the floor slab 60 and communicates with the middle layer and the lower layer. The chute 40 is arranged between the sub-conveyor line 30 and two main conveyor lines 50 for communicating the sub-conveyor line 30 and the main conveyor line 50. The chute 40 and the main conveyor line 50 are arranged in the lower layer. Each filter press 10 is equipped with a slag receiving device 20, a sub-conveyor line 30 and a chute 40 equipped with a three-way reversing valve 41. Each chute 40 corresponds to two side-by-side main conveyor lines 50, and several chutes 40 are on the main conveyor line 50.

[0034] Refer to the appendix Figure 2 As shown in the figure, the chute 40 includes a three-way reversing valve 41, a first channel 42 and a second channel 43. The sub-conveyor line 30 is communicated with the feeding port of the three-way reversing valve 41. One discharge port of the three-way reversing valve 41 is communicated with the first channel 42, and the other discharge port is communicated with the second channel 43. The discharge port of the first channel 42 is communicated with a main conveyor line 50, and the second channel 43 is communicated with the other main conveyor line 50. The valve plate of the three-way reversing valve 41 of the chute 40, the inner wall of the three-way reversing valve 41 of the chute 40, the inner wall of the first channel 42 of the chute 40 and the inner wall of the second channel 43 of the chute 40 are all made of mirror stainless steel.

[0035] The passage of the chute 40 is vertically arranged in a V shape above the main conveyor line 50. Refer to the appendix Figure 3 As shown in the figure, a shock-absorbing support 70 is arranged on the lower side of the belt of the belt conveyor at the position of the main conveyor line 50 corresponding to the discharge port of the chute 40. The shock-absorbing support 70 is made of hard material, and its shape corresponds to the shape of the belt. The shock-absorbing support 70 is in contact with the lower side of the belt, and the two sides of the shock-absorbing support 70 perpendicular to the belt transportation direction are downwardly curved arc angles. The size of the side of the shock-absorbing support 70 facing the discharge port of the chute 40 is larger than the size of the discharge port of the chute 40.

[0036] Refer to the appendix Figure 4As shown in the figure, both the sub-conveyor line 30 and the main conveyor line 50 are composed of grooved belt conveyor mechanisms. The conveyor line dust reduction device 80 arranged above the sub-conveyor line 30 and the main conveyor line 50 includes an extension surface 81, an inclined surface 82, and a flexible baffle 83; the extension surface 81 located above the belt of the sub-conveyor line 30 is arranged along the length direction of the sub-conveyor line 30 and corresponds to the length of the sub-conveyor line 30. The two sides in the length direction of the extension surface 81 are respectively inclined and extended inward to form the inclined surface 82. The free end of the inclined surface 82 is located above the inner side of the belt of the sub-conveyor line 30. One end of the flexible baffle 83 is fixed to the inclined surface 82, and the other free end hangs down to both sides of the belt of the sub-conveyor line 30. The extension surface 81, the inclined surface 82, the flexible baffle 83, and the belt enclose a closed material conveying space. The discharge port of the slag receiving device 20 penetrates through the extension surface 81 and communicates with the material conveying space of the sub-conveyor line 30. The machine head cover 90 covers the end of the sub-conveyor line 30 and the feeding port of the three-way reversing valve 41 of the chute 40 at the same time. The machine head cover 90 is hermetically connected to the extension surface 81 on the sub-conveyor line 30, that is, the material conveying space is communicated with the inner space of the machine head cover 90, and the bottom of the machine head cover 90 extends to the ground.

[0037] The extension surface 81 located above the belt of the main conveyor line 50 is arranged along the length direction of the main conveyor line 50 and corresponds to the length of the main conveyor line 50. The two sides in the length direction of the extension surface 81 are respectively inclined and extended inward to form the inclined surface 82. The free end of the inclined surface 82 is located above the inner side of the belt of the main conveyor line 50. One end of the flexible baffle 83 is fixed to the inclined surface 82, and the other free end hangs down to both sides of the belt of the main conveyor line 50. The extension surface 81, the inclined surface 82, the flexible baffle 83, and the belt enclose a closed material conveying space. The discharge port of the chute 40 penetrates through the extension surface 81 and communicates with the material conveying space of the main conveyor line 50.

[0038] The inspection window 100 includes a chute inspection window 101, a machine head cover inspection window 102, and a conveyor line dust reduction device inspection window 103; a chute inspection window 101 is arranged on each of the first channel 42 and the second channel 43; a section surface forming an angle with the ground is arranged on one side of the machine head away from the sub-conveyor line 30, and a machine head cover inspection window 102 is arranged on the section surface; a conveyor line dust reduction device inspection window 103 is arranged at intervals on the extension surface 81.

[0039] Refer to the appendix Figure 5 As shown in the figure, the slag receiving device 20 includes a hopper 21 and a cutting mesh 22. The hopper 21 is in the shape of a quadrangular frustum with a large opening and a small outlet. The discharge port of the hopper 21 is closed by the cutting mesh 22. The cutting mesh 22 is a thick mesh formed by the criss-crossing of triangular prisms, and one angle of all the triangular prisms faces the side of the hopper 21 where the feeding port is located.

[0040] During actual operation, a factory needs to configure 18 filter presses. Among them, 15 are in working condition, 2 are in maintenance, and 1 is out of order and waiting for repair. After the filter presses have fully dehydrated the fine slag, the filter cakes fall into the slag receiving device 20 below. They are cut into small pieces by the cutting mesh 22 and then fall into the feeding space enclosed by the corresponding sub-conveyor line 30 and the conveyor line dust reduction device 80. After a short-distance transportation, they enter the machine head cover 90. The slag receiving device 20, the sub-conveyor line 30, and the machine head cover 90 are arranged in the middle layer. Then, the fine slag falls into the feeding port of the chute 40, that is, it is transferred from the middle layer of the fine slag to the feeding space enclosed by the lower main conveyor line 50 and the conveyor line dust reduction device 80. During the same working period, all chutes 40 are connected to the same main conveyor line 50, and the other main conveyor line 50 is under maintenance. The two main conveyor lines 50 have opposite transportation directions, so there are two fine slag transfer points at the end of the main conveyor line 50, which facilitates the work of the main conveyor line 50 in working condition without affecting the maintenance of the main conveyor line 50.

[0041] For the entire fine slag transfer system of coal-to-methanol gasification, the division of labor and layout are reasonable and appropriate, the zoning is obvious, and the responsibilities of personnel are clearly defined. There are backups for the links that are prone to problems. It not only has high work efficiency but also allows for maintenance during operation, meeting the needs of large-scale industrial production. The entire transfer process is enclosed without dust emission, and there is no blockage problem in the chute 40 pipeline. The details are also optimized in design, the entire work process is smooth, and the working environment is good and safe.

Claims

1. A coal-to-methanol gasification fine slag transfer system, characterized in that: It includes a filter press, a slag receiving device, a branch conveying line, a chute, and two main conveying lines. The feed port of the slag receiving device is directly below the filter press, and the discharge port of the slag receiving device is connected with the branch conveying line. The chute is arranged between the branch conveying line and the two main conveying lines to connect the branch conveying line and the main conveying lines. The filter press, the slag receiving device, the branch conveying line and the chute correspond to each other one by one; the chute includes a three-way reversing valve, channel No. 1 and channel No. 2, the branch conveying line is connected with the feed port of the three-way reversing valve, one discharge port of the three-way reversing valve is connected with channel No. 1, and the other discharge port is connected with channel No. 2, the discharge port of channel No. 1 is connected with one main conveying line, and channel No. 2 is connected with the other main conveying line.

2. The coal-to-methanol gasification fine slag transfer system according to claim 1, characterized in that: It also includes two floor plates, which divide the space into an upper layer, a middle layer and a lower layer; the filter press is arranged on the upper layer, the slag receiving device and the branch conveying line are arranged on the middle layer, the slag receiving device passes through the floor plate and connects the upper layer and the middle layer, the chute and the main conveying line are arranged on the lower layer, the chute passes through the floor plate and connects the middle layer and the lower layer.

3. The coal-to-methanol gasification fine slag transfer system according to claim 1, characterized in that: The valve plate of the chute three-way reversing valve, the inner wall of the chute three-way reversing valve, the inner wall of the chute No. 1 channel and the inner wall of the chute No. 2 channel are all made of mirror stainless steel.

4. The coal-to-methanol gasification fine slag transfer system according to claim 1, characterized in that: Both the branch conveyor line and the main conveyor line are composed of belt conveyors.

5. The coal-to-methanol gasification fine slag transfer system according to claim 4, characterized in that: Both the branch conveyor line and the main conveyor line are composed of grooved belt conveyors.

6. The coal-to-methanol gasification fine slag transfer system according to claim 4, characterized in that: It also includes a shock-absorbing support. The chute passage is vertically arranged in a herringbone shape above the main conveying line. A shock-absorbing support is arranged on the lower side of the belt of the belt conveyor at the main conveying line corresponding to the chute discharge port. The shock-absorbing support is made of hard material, and its shape corresponds to the shape of the belt. The shock-absorbing support is in contact with the lower side of the belt, and the two sides of the shock-absorbing support perpendicular to the belt transportation direction are downwardly curved arc angles, and the size of the shock-absorbing support facing the chute discharge port is one circle larger than the size of the chute discharge port.

7. The coal-to-methanol gasification fine slag transfer system according to claim 4, characterized in that: It also includes a conveyor line dust reduction device, which is arranged on the upper part of the sub-conveyor line and the main conveyor line and includes an extension surface, an inclined surface and a flexible baffle; the extension surface located above the sub-conveyor line belt is arranged along the length direction of the sub-conveyor line and corresponds to the length of the sub-conveyor line, and both sides of the extension surface in the length direction are respectively inclined inwardly and extended to form an inclined surface, and the free end of the inclined surface is located above the inner side of the sub-conveyor line belt, one end of the flexible baffle is fixed to the inclined surface, and the other free end is vertical to both sides of the sub-conveyor line belt, and the extension surface, the inclined surface, the flexible baffle and the belt form a closed feeding space, The discharge port of the slag receiving device passes through the extension surface and is connected with the feeding space of the branch conveyor line; the extension surface located above the main conveyor line belt is arranged along the length direction of the main conveyor line and corresponds to the length of the main conveyor line, and the two sides of the extension surface in the length direction are respectively inclined inwardly and extended to form inclined surfaces, and the free end of the inclined surface is located above the inner side of the main conveyor line belt, one end of the flexible baffle is fixed to the inclined surface, and the other free end is perpendicular to both sides of the main conveyor line belt, the extension surface, the inclined surface, the flexible baffle and the belt form a closed feeding space, and the discharge port of the chute passes through the extension surface and is connected with the feeding space of the main conveyor line.

8. The coal-to-methanol gasification fine slag transfer system according to claim 7, characterized in that: It also includes a head cover, which covers the end of the sub-conveyor line and the inlet of the chute three-way reversing valve at the same time. The head cover is closed and connected to the extended surface on the sub-conveyor line, that is, the feeding space is connected to the internal space of the head cover, and the bottom of the head cover extends to the ground.

9. The coal-to-methanol gasification fine slag transfer system according to claim 8, characterized in that: It also includes inspection windows, which include a chute inspection window, a machine head cover inspection window and a conveyor line dust reduction device inspection window; a chute inspection window is respectively arranged on channel No. 1 and channel No. 2; a section forming an angle with the ground is arranged on the side of the machine head away from the sub-conveyor line, and a machine head cover inspection window is arranged on the section; a conveyor line dust reduction device inspection window is arranged on the extension surface at a certain interval.

10. The coal-to-methanol gasification fine slag transfer system according to claim 1, characterized in that: The slag receiving device comprises a hopper and a cutting net. The hopper is in the shape of a quadrangular pyramid with a large opening and a small outlet. The hopper outlet is closed by the cutting net. The cutting net is in the shape of a coarse net formed by crisscrossing triangular prisms, and one corner of all triangular prisms faces the hopper inlet.

11. The coal-to-methanol gasification fine slag transfer system according to claim 1, characterized in that: It also includes a protective net, which is a fine mesh made of hard material. A circle of movable protective net is set between the main beam of the filter press and the ground.

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