Low-rank coal-converter gas comprehensive upgrading device and method

Abstract

The invention relates to the technical field of converter gas recycling, and provides a low-rank coal-converter gas comprehensive upgrading device and method.The low-rank coal-converter gas comprehensive upgrading device comprises a reactor, a first gas inlet and a first gas outlet, a second gas inlet and a second gas outlet, the reactor is internally provided with a reaction cavity, and the first gas inlet and the first gas outlet are communicated with the reaction cavity; the at least one sieve tray is used for placing low-rank coal, and the sieve tray is detachably mounted in the reaction chamber; and the confining heat loading unit is used for heating the reaction chamber, and the confining heat loading unit is arranged on the reactor. According to the method, converter gas recovery treatment and a low-rank coal pyrolysis upgrading process are combined, and in a high-temperature environment of the converter gas, reactive components contained in the converter gas react with the low-rank coal, so that the converter gas with an improved heat value and coke are finally obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of converter gas recovery and utilization, and in particular to a low-rank coal-converter gas comprehensive quality-improving device and method. Background Art

[0002] Converter gas refers to the brown smoke discharged during the converter blowing process. It is a mixture of furnace gas and smoke. The main component is CO. In addition, it also contains a small amount of carbon dioxide and trace amounts of other high-temperature gases and smoke. Converter gas has the characteristics of high temperature, large composition changes, and high dust content. If the high temperature characteristics of converter gas are not utilized, a lot of heat will be wasted; and if the CO in the furnace gas can be recovered, it is also a good fuel and chemical raw material; if the smoke is directly discharged into the atmosphere, it will cause serious pollution to the atmosphere. If it can be recovered and made into sintered ore or pelletized ore, it will be a good raw material for ironmaking. Therefore, the recycling of converter gas has great economic value.

[0003] Low-rank coal is a type of coal with a low degree of coalification, accounting for a high proportion of the total coal resources. Due to its low degree of coalification, it contains more impurities such as S, N, and P. Improper use can easily cause serious environmental pollution. At present, there are problems such as low comprehensive utilization level and single product. Through the cascade utilization method based on pyrolysis, high value-added products such as gas, electricity, oil and chemical products can be obtained.

[0004] In the prior art, the processing technology for converter gas is mostly to recover the remaining heat through multi-stage heat exchange. The heat exchange process is relatively complicated, and some impurity components in the converter gas need to be recovered before converter gas with relatively high calorific value can be obtained. Summary of the invention

[0005] The purpose of the present invention is to provide a low-rank coal-converter gas comprehensive upgrading device and method, which combines the converter gas recovery process with the low-rank coal pyrolysis and upgrading process, and utilizes the reactive components contained in the converter gas to react with the low-rank coal in the high-temperature environment of the converter gas, and finally obtains converter gas and coke with improved calorific value.

[0006] The above technical objectives of the present invention are mainly achieved through the following technical solutions:

[0007] In one aspect, the present invention provides a low-rank coal-converter gas comprehensive upgrading device, comprising:

[0008] A reactor having a reaction chamber formed therein, wherein the reactor is provided with a first air inlet and a first air outlet communicating with the reaction chamber;

[0009] at least one sieve plate for placing low-rank coal, the sieve plate being detachably mounted in the reaction chamber;

[0010] A surrounding heat loading unit for heating the reaction chamber, wherein the surrounding heat loading unit is arranged on the reactor.

[0011] The low-rank coal-converter gas comprehensive upgrading device described in the present invention combines the converter gas recovery process with the low-rank coal pyrolysis and upgrading process, utilizes the waste heat of the converter gas to pyrolyze the low-rank coal, reduces the energy consumption during pyrolysis coking, and utilizes the reactive components contained in the converter gas to react with the low-rank coal under the high temperature environment of the converter gas, finally obtaining converter gas and coke with improved calorific value.

[0012] In a preferred embodiment of the present invention, the reactor includes an outer shell and an inner shell, the reaction chamber is formed in the inner shell, a heating chamber is formed between the outer shell and the inner shell, the outer shell is provided with a second air inlet and a second air outlet connected to the heating chamber, and the heating chamber, the second air inlet and the second air outlet form the surrounding heat loading unit.

[0013] In this embodiment, the reactor adopts a double-layer structure, and the middle layer forms a heating chamber. By introducing a high-temperature medium (such as high-temperature gas) into the heating chamber, a surrounding heat loading unit is formed on the circumferential outer side of the reaction chamber, thereby providing a high-temperature environment for the pyrolysis reaction of converter gas and low-rank coal.

[0014] In a preferred embodiment of the present invention, a pulverized coal nozzle is provided on the top of the reaction chamber, and the pulverized coal nozzle is connected to a low-rank coal pipeline, and the pulverized coal nozzle can spray the pulverized coal in the low-rank coal pipeline into the reaction chamber.

[0015] In this embodiment, there are two ways for low-rank coal to enter the reactor: low-rank coal placed on the sieve plate before the reaction and coal powder sprayed into the reactor by the coal powder nozzle during the reaction; the reaction mode is flexible and suitable for systems with large changes in converter gas intake.

[0016] In a preferred embodiment of the present invention, the first gas inlet is located on the side wall of the bottom of the reactor, and the first gas outlet is located on the top wall of the reactor.

[0017] In this embodiment, the converter gas entering the reactor flows from bottom to top, and the flow direction of the gas flow is consistent with the flow trend of the high-temperature gas, which facilitates the converter gas after reaction and conditioning to flow out of the reactor.

[0018] In a preferred embodiment of the present invention, a plurality of sieve trays are spaced apart in the reaction chamber along the height direction of the reactor.

[0019] In this embodiment, a plurality of sieve plates are arranged at intervals in the reactor, low-rank coal is placed on each sieve plate, and the converter gas flows through the plurality of sieve plates in sequence from bottom to top, so that the converter gas can be fully reacted.

[0020] In a preferred embodiment of the present invention, the mesh size of each sieve plate gradually increases from top to bottom along the height of the reactor.

[0021] In this embodiment, the mesh diameter on each sieve plate gradually decreases from top to bottom, and the mesh density gradually increases from top to bottom. At the bottom of the reactor, the converter gas can fully contact and react with the low-rank coal. At the top of the reactor, the larger mesh can ensure that the converter gas flows upward smoothly.

[0022] In a preferred embodiment of the present invention, the first air inlet is connected to a converter gas pipeline, and a blower is provided on the converter gas pipeline.

[0023] In this embodiment, the blower provides power for the flow of the converter gas, and the flow speed of the converter gas in the reaction chamber is controlled by controlling the output power of the blower.

[0024] In a preferred embodiment of the present invention, a temperature sensor is provided in the heating chamber.

[0025] In this embodiment, the temperature sensor can monitor the temperature in the heating chamber, and the control unit can feedback control the flow rate of the high-temperature medium in the heating chamber, thereby maintaining the temperature of the heating chamber within a suitable range.

[0026] In a preferred embodiment of the present invention, a flow sensor is provided in the low-rank coal pipeline, and a flow velocity sensor is provided in the reaction chamber.

[0027] In this embodiment, the flow sensor can monitor the flow of coal powder in the low-rank coal pipeline, and the flow rate sensor can monitor the flow rate of the converter gas in the reaction chamber; the flow rate sensor performs feedback control on the output power of the blower through the control unit, so that the ratio of low-rank coal to converter gas in the reaction chamber is maintained within an appropriate range, ensuring that the two can fully react.

[0028] On the other hand, the present invention also provides a low-rank coal-converter gas comprehensive quality improvement method, which is implemented by the low-rank coal-converter gas comprehensive quality improvement device as described above, and the low-rank coal-converter gas comprehensive quality improvement method comprises the following steps:

[0029] Step S1: installing a sieve plate with low-rank coal in a reaction chamber;

[0030] Step S2: turning on the surrounding heat loading unit to heat the reaction chamber;

[0031] Step S3: introducing the converter gas generated at the converter outlet into the reaction chamber to undergo a pyrolysis reaction with the low-rank coal to produce coke.

[0032] The low-rank coal-converter gas comprehensive upgrading method described in the present invention combines converter gas recovery and processing with low-rank coal pyrolysis and upgrading technology, utilizes the waste heat of converter gas to pyrolyze the low-rank coal, reduces energy consumption during pyrolysis and coking, and utilizes the reactive components contained in converter gas to react with low-rank coal under the high-temperature environment provided by the surrounding heat loading unit, finally obtaining converter gas and coke with improved calorific value.

[0033] In a preferred embodiment of the present invention, during the heating of the reaction chamber, the temperature of the reaction chamber is maintained at about 800° C.; and the CO content in the converter gas introduced into the reaction chamber is greater than 50%.

[0034] In a preferred embodiment of the present invention, a pulverized coal nozzle is provided on the top of the reaction chamber;

[0035] After the sieve plate with low-rank coal is installed in the reaction chamber, coal powder is sprayed into the reaction chamber through the coal powder nozzle.

[0036] In this embodiment, low-rank coal can also be sprayed into the reaction chamber by the coal powder nozzle during the reaction. The reaction mode is flexible and suitable for systems with large changes in converter gas intake. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0038] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0039] Figure 1 It is a structural schematic diagram of the low-rank coal-converter gas comprehensive upgrading device described in the present invention.

[0040] Description of reference numerals:

[0041] 10. Reactor; 11. Reaction chamber; 12. First air inlet; 13. First air outlet; 14. Outer shell; 15. Inner shell; 16. Heating chamber; 17. Second air inlet; 18. Second air outlet;

[0042] 20. Sieve plate;

[0043] 30. Pulverized coal nozzle;

[0044] 40. Converter gas pipeline; 41. Blower. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0046] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0048] Implementation method 1:

[0049] like Figure 1 As shown, the present invention provides a low-rank coal-converter gas comprehensive upgrading device, which includes: a reactor 10, in which a reaction chamber 11 is formed, and the reactor 10 is provided with a first air inlet 12 and a first air outlet 13 connected to the reaction chamber 11; at least one sieve plate 20 for placing low-rank coal, and the sieve plate 20 is detachably installed in the reaction chamber 11; and a surrounding heat loading unit for heating the reaction chamber 11, and the surrounding heat loading unit is arranged on the reactor 10.

[0050] The low-rank coal-converter gas comprehensive upgrading device described in the present invention combines converter gas recovery and processing with low-rank coal pyrolysis and upgrading technology, utilizes the waste heat of converter gas to pyrolyze low-rank coal, reduces energy consumption during pyrolysis and coking, and utilizes the reactive components contained in converter gas to react with low-rank coal in the high-temperature environment of converter gas, finally obtaining converter gas and coke with increased calorific value.

[0051] The specific structure of each part of the low-rank coal-converter gas comprehensive upgrading device described in the present invention, as well as the position and connection relationship between the various parts will be described in detail below.

[0052] like Figure 1 As shown, the low-rank coal-converter gas comprehensive upgrading device of the present invention includes a reactor 10, which is a main structure and a vertical reaction tank; a relatively closed reaction chamber 11 is formed in the shell of the reactor 10. A first air inlet 12 and a first air outlet 13 are provided on the shell of the reactor 10, and the first air inlet 12 and the first air outlet 13 are both connected to the reaction chamber 11 through the shell, and the converter gas generated by the converter can enter the reaction chamber 11 through the first air inlet 12, and after reacting in the reaction chamber 11, it is discharged through the first air outlet 13.

[0053] Preferably, the first air inlet 12 is located on the side wall at the bottom of the reactor 10, and the first air outlet 13 is located on the top wall of the reactor 10; the converter gas entering the reactor 10 flows from bottom to top, and the flow direction of the airflow is consistent with the flow trend of the high-temperature gas, which facilitates the converter gas after reaction and tempering to flow out of the reactor 10.

[0054] like Figure 1 As shown, at least one sieve plate 20 is provided in the reaction chamber 11, and the sieve plate 20 is used to place low-rank coal, which can be low-rank coal pellets or low-rank coal particles. The sieve plate 20 is detachably mounted on the inner side wall of the reaction chamber 11, and the shape of the sieve plate 20 is the same as the cross-sectional shape of the reactor 10; and a closable opening is provided on the side wall of the reactor 10 corresponding to the position of the sieve plate 20, and the sieve plate 20 can be installed into the reaction chamber 11 through the above opening, and can also be pulled out through the above opening.

[0055] Preferably, a plurality of sieve plates 20 are spaced apart in the reaction chamber 11 along the height direction of the reactor 10; a plurality of sieve plates 20 are spaced apart in the upper and lower parts of the reactor 10, low-rank coal is placed on each sieve plate 20, and the converter gas flows through the plurality of sieve plates 20 in sequence from bottom to top, so that the converter gas can be fully reacted and the waste heat can be fully utilized.

[0056] like Figure 1As shown, the reactor 10 is also provided with a surrounding heat loading unit, which is used to heat the reaction chamber 11 to provide a high temperature environment for the reaction of low-rank coal and converter gas. The surrounding heat loading unit can heat the reaction chamber 11 by direct heating, for example, by setting a resistance wire on the side wall of the reactor 10; the surrounding heat loading unit can also heat the reaction chamber 11 by heat exchange, for example, by setting a heat exchanger on the side wall of the reactor 10.

[0057] Furthermore, the pyrolysis process in the reaction chamber 11 is as follows:

[0058] Untreated converter gas is directly introduced from the first air inlet 12 at the bottom of the reactor 10. The converter gas rising in the reaction chamber 11 fully exchanges heat with the low-rank coal pellets or low-rank coal particles on the sieve plate 20, which promotes the pyrolysis reaction of the low-rank coal. At the same time, part of the CO2 in the converter gas undergoes Bourdeau reaction (CO2+C→2CO) and is converted into CO. Finally, the converter gas and the generated pyrolysis gas form a quenched converter gas, which is discharged from the first gas outlet 13 at the top of the reactor 10. The converter gas, as a partial heat source for the pyrolysis of low-rank coal, avoids the sensible heat loss of the converter gas, and reduces the CO2 content in the converter gas while obtaining the pyrolysis gas.

[0059] The structure and technical effects of the preferred implementation of the low-rank coal-converter gas comprehensive upgrading device of the present invention will be further explained below.

[0060] According to one embodiment of the present invention, Figure 1 As shown, the reactor 10 includes an outer shell 14 and an inner shell 15, a reaction chamber 11 is formed in the inner shell 15, a heating chamber 16 is formed between the outer shell 14 and the inner shell 15, and the outer shell 14 is provided with a second air inlet 17 and a second air outlet 18 which are connected to the heating chamber 16, and the heating chamber 16, the second air inlet 17 and the second air outlet 18 form a heat loading unit.

[0061] In this embodiment, the reactor 10 adopts a double-layer structure, and the middle layer forms a heating chamber 16. By introducing a high-temperature medium (such as high-temperature gas) into the heating chamber 16, a surrounding heat loading unit is formed on the circumferential outer side of the reaction chamber 11, thereby providing a high-temperature environment for the pyrolysis reaction of converter gas and low-rank coal.

[0062] Furthermore, a temperature sensor is provided in the heating chamber 16, which can monitor the temperature in the heating chamber 16. The temperature sensor performs feedback control on the flow of the high-temperature medium in the heating chamber 16 through the control unit, thereby maintaining the temperature of the heating chamber 16 within a suitable range.

[0063] According to one embodiment of the present invention, Figure 1As shown, a pulverized coal nozzle 30 is provided at the top of the reaction chamber 11, and the pulverized coal nozzle 30 is connected to a low-rank coal pipeline, and the pulverized coal nozzle 30 can spray the pulverized coal in the low-rank coal pipeline into the reaction chamber 11. There are two ways for low-rank coal to enter the reactor 10: low-rank coal placed on the sieve plate 20 before the reaction and pulverized coal sprayed by the pulverized coal nozzle 30 during the reaction; the reaction mode is flexible and suitable for systems with large changes in the intake of converter gas.

[0064] Specifically, Figure 1 As shown, a plurality of pulverized coal nozzles 30 are provided on the top of the reactor 10, and each pulverized coal nozzle 30 is connected to a pulverized coal pipeline (not shown) penetrating the top wall of the reactor 10, and pulverized coal containing low-rank coal particles flows through the pulverized coal pipeline.

[0065] According to one embodiment of the present invention, Figure 1 As shown, the mesh size of each sieve plate 20 gradually increases from top to bottom along the height of the reactor 10; the mesh diameter on each sieve plate 20 gradually decreases from top to bottom, and the mesh density gradually increases from top to bottom. At the bottom of the reactor 10, the converter gas can fully contact and react with the low-rank coal, and at the top of the reactor 10, the larger mesh can ensure that the converter gas flows upward smoothly.

[0066] According to one embodiment of the present invention, Figure 1 As shown, the first air inlet 12 is connected to a converter gas pipeline 40, and a blower 41 is provided on the converter gas pipeline 40. The blower 41 provides power for the flow of the converter gas, and the flow speed of the converter gas in the reaction chamber 11 is controlled by controlling the output power of the blower 41.

[0067] Furthermore, a flow sensor is provided in the low-rank coal pipeline, and a flow velocity sensor is provided in the reaction chamber 11. The flow sensor can monitor the flow of coal powder in the low-rank coal pipeline, and the flow velocity sensor can monitor the flow velocity of converter gas in the reaction chamber 11; the flow velocity sensor performs feedback control on the output power of the blower 41 through the control unit, so that the ratio of the low-rank coal and converter gas in the reaction chamber 11 is maintained within a suitable range, ensuring that the two can fully react.

[0068] Implementation method 2:

[0069] The present invention also provides a low-rank coal-converter gas comprehensive upgrading method, which is implemented by using the low-rank coal-converter gas comprehensive upgrading device as described in the first embodiment. The low-rank coal-converter gas comprehensive upgrading method comprises the following steps:

[0070] Step S1: installing the sieve plate 20 with low-rank coal in the reaction chamber 11;

[0071] Step S2: turning on the surrounding heat loading unit to heat the reaction chamber 11;

[0072] Step S3: The converter gas generated at the converter outlet is introduced into the reaction chamber 11 to undergo a pyrolysis reaction with low-rank coal to produce coke.

[0073] The low-rank coal-converter gas comprehensive upgrading method described in the present invention combines converter gas recovery and processing with low-rank coal pyrolysis and upgrading technology, utilizes the waste heat of converter gas to pyrolyze the low-rank coal, reduces energy consumption during pyrolysis and coking, and utilizes the reactive components contained in converter gas to react with low-rank coal under the high-temperature environment provided by the surrounding heat loading unit, finally obtaining converter gas and coke with improved calorific value.

[0074] Specifically, in step S1, Figure 1 As shown, each sieve plate 20 is pulled out from the reactor 10 , and low-rank coal pellets or low-rank coal particles are placed on the sieve plate 20 before being installed into the reactor 10 .

[0075] In step S2 , high-temperature gas is introduced into the heating chamber 16 through the second gas inlet 17 to heat the reaction chamber 11 , and the temperature in the reaction chamber 11 is maintained constant.

[0076] Preferably, during the process of heating the reaction chamber 11 , the temperature of the reaction chamber 11 is maintained at about 800° C.

[0077] In step S3, converter gas is introduced into the reaction chamber 11 through the first air inlet 12, and the converter gas rising in the reaction chamber 11 fully exchanges heat with the low-rank coal pellets or low-rank coal particles on the sieve plate 20, so as to promote the pyrolysis reaction of the low-rank coal; the converter gas and the generated pyrolysis gas form a quenched converter gas, which is discharged from the first air outlet 13 at the top of the reactor 10. When the CO content in the converter gas decreases to less than 50%, the introduction of the converter gas is stopped, and the sieve plate 20 is pulled out after cooling to room temperature, and the coke generated by the pyrolysis reaction therein is taken out.

[0078] Preferably, the CO content in the converter gas introduced into the reaction chamber 11 is greater than 50%.

[0079] According to one embodiment of the present invention, Figure 1 As shown, a pulverized coal nozzle 30 is provided at the top of the reaction chamber 11; after the sieve plate 20 with low-rank coal is installed in the reaction chamber 11, pulverized coal is sprayed into the reaction chamber 11 through the pulverized coal nozzle 30. Low-rank coal can also be sprayed into the reaction chamber 11 through the pulverized coal nozzle 30 during the reaction, and the reaction mode is flexible, which is suitable for systems with large changes in the intake amount of converter coal gas.

[0080] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A low-rank coal-converter gas comprehensive upgrading device, characterized in that: include: A reactor (10) having a reaction chamber (11) formed therein, wherein the reactor (10) is provided with a first gas inlet (12) and a first gas outlet (13) which are in communication with the reaction chamber (11); at least one sieve plate (20) for placing low-rank coal, the sieve plate (20) being detachably mounted in the reaction chamber (11); A surrounding heat loading unit for heating the reaction chamber (11), wherein the surrounding heat loading unit is arranged on the reactor (10).

2. The low-rank coal-converter gas comprehensive upgrading device according to claim 1 is characterized in that: The reactor (10) comprises an outer shell (14) and an inner shell (15); the reaction chamber (11) is formed in the inner shell (15); a heating chamber (16) is formed between the outer shell (14) and the inner shell (15); the outer shell (14) is provided with a second air inlet (17) and a second air outlet (18) which are connected to the heating chamber (16); the heating chamber (16), the second air inlet (17) and the second air outlet (18) form the surrounding heat loading unit.

3. The low-rank coal-converter gas comprehensive upgrading device according to claim 1 or 2, characterized in that: A pulverized coal nozzle (30) is provided at the top of the reaction chamber (11), and the pulverized coal nozzle (30) is connected to a low-rank coal pipeline. The pulverized coal nozzle (30) can spray the pulverized coal in the low-rank coal pipeline into the reaction chamber (11).

4. The low-rank coal-converter gas comprehensive upgrading device according to claim 3 is characterized in that: The first gas inlet (12) is located on the side wall of the bottom of the reactor (10), and the first gas outlet (13) is located on the top wall of the reactor (10).

5. The low-rank coal-converter gas comprehensive upgrading device according to claim 4 is characterized in that: Along the height direction of the reactor (10), a plurality of sieve trays (20) are arranged at intervals in the reaction chamber (11).

6. The low-rank coal-converter gas comprehensive upgrading device according to claim 5 is characterized in that: Along the height of the reactor (10) from top to bottom, the mesh size of each sieve tray (20) gradually increases.

7. The low-rank coal-converter gas comprehensive upgrading device according to claim 1 is characterized in that: The first air inlet (12) is connected to a converter gas pipeline (40), and a blower (41) is provided on the converter gas pipeline (40).

8. The low-rank coal-converter gas comprehensive upgrading device according to claim 2 is characterized in that: A temperature sensor is arranged in the heating chamber (16).

9. The low-rank coal-converter gas comprehensive upgrading device according to claim 3 is characterized in that: A flow sensor is provided in the low-rank coal pipeline, and a flow velocity sensor is provided in the reaction chamber (11).

10. A method for comprehensive upgrading of low-rank coal-converter gas, characterized in that: The low-rank coal-converter gas comprehensive upgrading device according to any one of claims 1 to 9 is used for implementation, and the low-rank coal-converter gas comprehensive upgrading method comprises: Installing a sieve plate (20) on which low-rank coal is placed in a reaction chamber (11); Turning on the surrounding heat loading unit to heat the reaction chamber (11); The converter gas generated at the converter outlet is introduced into the reaction chamber (11) to undergo a pyrolysis reaction with the low-rank coal to produce coke.

11. The low-rank coal-converter gas comprehensive quality improvement method according to claim 10, characterized in that: In the process of heating the reaction chamber (11), the temperature of the reaction chamber (11) is maintained at 800° C.; the CO content in the converter gas introduced into the reaction chamber (11) is greater than 50%.

12. The method for comprehensive upgrading of low-rank coal-converter gas according to claim 10 or 11, characterized in that: A pulverized coal nozzle (30) is provided at the top of the reaction chamber (11); After the sieve plate (20) containing the low-rank coal is installed in the reaction chamber (11), coal powder is sprayed into the reaction chamber (11) through the coal powder nozzle (30).

Images