CN117212805A

CN117212805A - Slag device

Info

Publication number: CN117212805A
Application number: CN202311300643.3A
Authority: CN
Inventors: 王磊
Original assignee: Beijing Xinke Yingyuan New Coal Gasification Technology Co ltd
Current assignee: Beijing Xinke Yingyuan New Coal Gasification Technology Co ltd
Priority date: 2023-10-09
Filing date: 2023-10-09
Publication date: 2023-12-12

Abstract

The application relates to the technical field of carbonaceous material reactors, in particular to a slag-melting device, which comprises: the combustion improver distribution ring is a pipeline which is annularly arranged along the periphery of the discharger; the first pipeline is connected with the combustion improver distribution ring so as to introduce the combustion improver; the gas-liquid fuel distribution ring is a pipeline which is annularly arranged along the periphery of the discharger; the second pipeline is connected with the gas-liquid fuel distribution ring so as to introduce gas-liquid fuel; the burner nozzles are connected with the combustion improver distribution ring and the gas-liquid fuel distribution ring; the plurality of burners generate flame flow and high-temperature flue gas, and the flame flow and the high-temperature flue gas are matched with a discharger to perform disturbance, mixing, oxidation, heating, lifting and raising on the inorganic residues to generate molten inorganic residues; the application distributes the gas-liquid fuel and the combustion improver according to the requirement, fully mixes and burns, generates stable high-temperature flame flow according to the operation requirement to disturb the inorganic residue, adjusts the temperature of the inorganic residue, maintains the residue position of the inorganic residue and discharges the inorganic residue smoothly.

Description

Slag device

Technical Field

The application relates to the technical field of carbonaceous material reactors, in particular to a slag-melting device.

Background

The carbonaceous material reforming reactor in the carbonaceous material reactor takes carbonaceous particles as raw materials, adopts materials such as steam, oxygen, carbon dioxide and mixtures thereof as an oxidant, forms a mixed bed through the non-cylindrical reducing design of the inner cavity of the reactor, adds reforming agents such as steam, oxygen, carbon dioxide, hydrogen, tar and mixtures thereof to realize secondary reforming, and utilizes the carbonaceous materials to regulate the product gas components according to a preset product process route, thereby improving the efficiency of the reactor. In the above process, it is necessary to generate a stable high temperature flame flow to disturb the inorganic residue at the bottom of the reactor, and to adjust the temperature of the inorganic residue, maintain the residue level of the inorganic residue in the reactor, and smoothly discharge the inorganic residue in a molten state, so that an apparatus for temperature-adjusting, disturbing and melting the inorganic residue is required.

Disclosure of Invention

The technical problem underlying the present application is therefore to overcome the drawbacks of the prior art lacking a high-performance apparatus for temperature regulation, turbulence and melting of inorganic residues.

In order to overcome the above-mentioned drawbacks, the present application provides a slag container adapted to be mounted outside the lower end of a discharger, comprising:

the combustion improver distribution ring is a pipeline which is annularly arranged along the outer circumference of the discharger;

the first pipeline is connected with the combustion improver distribution ring and is suitable for introducing the combustion improver;

the gas-liquid fuel distribution ring is a pipeline which is annularly arranged along the outer circumference of the discharger;

a second pipeline connected with the gas-liquid fuel distribution ring, wherein the second pipeline is suitable for introducing gas-liquid fuel;

a plurality of burners arranged along the outer circumference of the lower end of the discharger; the burner nozzles are connected with the combustion improver distribution ring and the gas-liquid fuel distribution ring; the burners generate flame flow and high-temperature flue gas, and are matched with a discharger to perform disturbance, mixing, oxidation, heating, lifting and lifting on the inorganic residues to generate molten inorganic residues.

Optionally, the combustion improver distribution ring and the gas-liquid fuel distribution ring are both arranged around the center of the slag device, and the combustion improver distribution ring and the gas-liquid fuel distribution ring are coaxially arranged; the combustion improver distribution ring is connected with the gas-liquid fuel distribution ring through a web plate.

Optionally, an annular baffle is mounted below the web, the baffle being adapted to block flame flow generated by the burner.

Optionally, the gap between the inner side surface of the baffle and the discharger is 2-6 mm.

Optionally, the slag container is mounted on the discharger by a flexible structure.

Optionally, the outlets of the burners are arranged horizontally or obliquely downwards; the center lines of the burner outlets intersect in a spherical section.

Optionally, the diameter of the spherical section is no greater than 10mm.

Optionally, the combustion improver distribution ring, the first pipeline, the gas-liquid fuel distribution ring, the second pipeline and the web are of an integrated structure.

Optionally, the burner comprises:

the burner core is communicated with the gas-liquid fuel distribution ring;

one end of the outer sleeve is connected with the burner core, and the rest part of the outer sleeve is sleeved on the periphery of the burner core at intervals; the interface arranged on the side wall of the outer sleeve member is communicated with the combustion improver distribution ring; the other end of the outer sleeve member exceeds the burner core, or the other end of the outer sleeve member is arranged flush with the burner core.

Optionally, the distance between the other end of the outer sleeve and the outlet end of the burner core is 0-20 mm.

Compared with the prior art, the technical scheme of the application has the following advantages:

1. the slag device provided by the application is suitable for being arranged outside the lower end of a discharger, and comprises: the combustion improver distribution ring is a pipeline which is annularly arranged along the outer circumference of the discharger; the first pipeline is connected with the combustion improver distribution ring and is suitable for introducing the combustion improver; the gas-liquid fuel distribution ring is a pipeline which is annularly arranged along the outer circumference of the discharger; a second pipeline connected with the gas-liquid fuel distribution ring, wherein the second pipeline is suitable for introducing gas-liquid fuel; a plurality of burners arranged along the outer circumference of the lower end of the discharger; the burner nozzles are connected with the combustion improver distribution ring and the gas-liquid fuel distribution ring; the plurality of burners generate flame flow and high-temperature flue gas, and are matched with a discharger to perform disturbance, mixing, oxidation, heating, lifting and lifting on inorganic residues to generate molten inorganic residues; by adopting the technical scheme, the gas-liquid fuel and the combustion improver are distributed according to the requirement, fully mixed and combusted, stable high-temperature flame flow is generated according to the operation requirement to disturb the inorganic residues, the temperature of the inorganic residues is regulated, the residue positions of the inorganic residues are maintained, and the inorganic residues are discharged smoothly. And the heat stress is low, the heating surface is few, and the self cooling is realized by means of the gas-liquid fuel and the combustion improver, so that the service life is long. When the internal flow passage of the discharger is blocked, the discharger is not easy to burn by flame flow; effectively avoid the high-temperature carbon deposition blockage of the gas-liquid fuel runner. The slag device is not only suitable for the carbonaceous material conversion reforming reactor in the mixed bed, but also suitable for other reactors in the entrained flow bed, the fixed bed or the mixed bed. The gas-liquid fuel combustion improver has the advantages of long service life, full mixing of the gas-liquid fuel and the combustion improver, high combustion speed, complete combustion, high combustion efficiency, tempering prevention, strong universality, low use cost, convenience in overhaul and maintenance and the like.

2. The combustion improver distribution ring and the gas-liquid fuel distribution ring are both arranged around the center of the slag device, and are coaxially arranged; the combustion improver distribution ring is connected with the gas-liquid fuel distribution ring through a web plate; by adopting the technical scheme, the application ensures that the combustion improver distribution ring and the gas-liquid fuel distribution ring are reliably connected, and provides stable and uniform gas-liquid fuel and combustion improver.

3. The annular baffle is arranged below the web plate and is suitable for blocking flame flow generated by the burner; by adopting the technical scheme, the application shields upward flame radiation of the burner and reduces convection of high-temperature flame flow of the burner by arranging the baffle plate, protects the web plate, the gas-liquid fuel distribution ring, the combustion improver distribution ring and the like, and reduces heat loss.

4. The slag device is arranged on the discharger through a flexible structure; by adopting the technical scheme, the temperature difference expansion is compensated and the temperature difference stress is absorbed through the flexible structure, so that damage is avoided.

5. The outlets of the burners are arranged horizontally or obliquely downwards; the central lines of the burner outlets are crossed in a spherical section; by adopting the technical scheme, the flame flows generated by the burners are concentrated, and the high temperature of the flame flows is utilized efficiently.

6. The combustion improver distribution ring, the first pipeline, the gas-liquid fuel distribution ring, the second pipeline and the web are of an integrated structure; by adopting the technical scheme, the reliability of connection among the combustion improver distribution ring, the first pipeline, the gas-liquid fuel distribution ring, the second pipeline and the web plate is ensured.

7. The burner of the application comprises: the burner core is communicated with the gas-liquid fuel distribution ring; one end of the outer sleeve is connected with the burner core, and the rest part of the outer sleeve is sleeved on the periphery of the burner core at intervals; the interface arranged on the side wall of the outer sleeve member is communicated with the combustion improver distribution ring; the other end of the external sleeve member exceeds the burner core, or the other end of the external sleeve member is arranged flush with the burner core; by adopting the technical scheme, the self cooling protection is realized by means of the gas-liquid fuel and the combustion improver, the combustion improver plays a role in cooling protection, and the blockage of a gas-liquid fuel flow passage in the burner core due to high-temperature carbon deposition of the gas-liquid fuel is avoided. Under normal working conditions, corrosion damage is avoided; under the severe working condition when the discharger channel is blocked, the discharger channel is not easily ablated and damaged by Gao Wenyan flow; the gas-liquid fuel and the combustion improver can be fully mixed, so that higher combustion efficiency is realized; the gas-liquid fuel and the combustion improver are almost sprayed from the outlet end face of the burner sleeve at the same time, the outlet end face of the burner is protected by air flow, and the phenomenon that the flow passage of the burner is blocked or backfire is caused by blocking due to the splashing of slag drops and inorganic residues of the discharger is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional structural view of a slag trap provided in an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of a burner provided in an embodiment of the present application.

Reference numerals illustrate:

1. a first input joint; 2. a bracket; 3. a first pipeline; 4. a combustion improver distribution ring; 5. a second input connector; 6. a second pipeline; 7. a gas-liquid fuel distribution ring; 8. a burner; 9. a web; 10. a baffle; 11. a first connection pipe; 12. a first movable joint; 13. countersunk head screws; 14. a second movable joint; 15. a second connection pipe; 16. a burner core; 17. an outer sleeve; 18. inorganic residues; 19. high temperature flue gas; 20. a discharger; 21. a combustion improver; 22. and (3) gas-liquid fuel.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present application described below may be combined with each other as long as they do not collide with each other.

For the reforming reactor for converting carbonaceous materials, carbonaceous particles are used as raw materials, materials such as steam, oxygen, carbon dioxide and mixtures thereof are used as oxidizing agents, a mixed bed is formed through non-cylindrical reducing design of the inner cavity of the reactor, reforming agents such as steam, oxygen, carbon dioxide, hydrogen, tar and mixtures thereof are added to realize secondary reforming, product gas components are regulated according to a preset product process route, and the efficiency of the reactor is improved. The slag discharging system can be applied to the carbon-containing substance conversion reforming reactor and can be used as a part of the carbon-containing substance conversion reforming reactor. The slag device is one of the key components of slag discharging control system of carbon-containing matter converting reforming reactor, and has the functions of distributing gas-liquid fuel and combustion improver as required, mixing and burning thoroughly, generating stable high temperature flame flow to disturb the inorganic slag pool at the bottom of the reactor and regulating the temperature of the inorganic slag, maintaining the slag position of the inorganic slag in the inorganic slag pool and discharging smoothly.

One embodiment of the slag maker as shown in fig. 1 to 2 comprises: the first pipeline 3, the combustion improver distribution ring 4, the burner 8, the second pipeline 6 and the gas-liquid fuel distribution ring 7 are connected in sequence. The slag pot is adapted to be mounted outside the lower end of the discharger 20. Specifically, the slag pot is cooperatively mounted to the discharger 20 by a flexible structure. The slag burner according to the application is understood to be a specially designed isobaric "industrial burner". The discharger 20 may be referred to as an inorganic residue discharger of the aforementioned reforming reactor for converting carbonaceous material, and may be also conventionally referred to as a "slag discharger" or a "slag tap".

As shown in fig. 1, the combustion improver distribution ring 4 is a pipeline annularly arranged along the outer circumference of the discharger 20; said first conduit 3 is adapted to introduce a combustion improver 21; specifically, the first pipeline 3 is connected with an external gas-liquid fuel pipeline through a first input joint 1. The combustion improver 21 is air or a mixed gas containing oxygen. The gas-liquid fuel distribution ring 7 is a pipeline which is annularly arranged along the outer circumference of the discharger 20 and is fixed by a bracket 2; said second conduit 6 is adapted to introduce a gaseous liquid fuel 22; in particular, the second pipe 6 is connected to an external oxidizer pipe through a second input connector 5. The gas-liquid fuel 22 is a flammable substance such as a liquid, a liquefied gas, or a pressurized gas that is in a liquid state, a gaseous state, or a combination of both. A plurality of burners 8 are arranged along the outer circumference of the lower end of the discharger 20; the burner nozzles 8 are connected with the combustion improver distribution ring 4 and the gas-liquid fuel distribution ring 7; specifically, the plurality of burners 8 are connected with the combustion improver distribution ring 4 through a first connecting pipe 11 and a first movable joint 12; the combustion agent distribution ring 4 may be connected to a first connecting pipe 11, the first connecting pipe 11 being connected to the burner 8 via a first union 12. The burners 8 are connected with the gas-liquid fuel distribution ring 7 through a second connecting pipe 15 and a second movable joint 14; the gas-liquid fuel distribution ring 7 may be connected to a second connecting pipe 15, and the second connecting pipe 15 is connected to the burner 8 through a second movable joint 14. The number of the first connecting pipes 11 and the second connecting pipes 15 is set according to the number of the burners 8; the number of the first connection pipes 11 and the second connection pipes 15 may be 4 to 20 and uniformly distributed along the lower circumference of the oxidizer distribution ring 4 and the gas-liquid fuel distribution ring 7, respectively. The plurality of burners 8 generate flame flow and high-temperature flue gas 19, and are matched with a discharger 20 to perform turbulence, mixing, oxidation, heating and lifting on the inorganic residues 18, so as to generate molten inorganic residues 18. The number of the burners 8 is set according to the heat load requirement of the slag-melting device, and the number of the burners 8 is generally 4-20.

The combustion improver distribution ring 4 and the gas-liquid fuel distribution ring 7 are both arranged around the center of the slag device, and the combustion improver distribution ring 4 and the gas-liquid fuel distribution ring 7 are coaxially arranged; the combustion improver distribution ring 4 is connected with the gas-liquid fuel distribution ring 7 through a web 9. Below the web 9 an annular baffle 10 is mounted, which baffle 10 is adapted to block the flame flow generated by the burner 8. Specifically, the gap between the inner side surface of the baffle 10 and the discharger 20 is 2-6 mm; the baffle 10 is arranged below the web 9 through countersunk screws 13; and the baffle plate 10 is made of a composite of a temperature-resistant corrosion-resistant alloy and ceramic. The outlets of the burners 8 are arranged horizontally or obliquely downwards; the center lines of the outlets of the plurality of burners 8 intersect in a spherical section. Specifically, the diameter of the spherical section is not more than 10mm. The burners 8 can be replaced independently, the repair and maintenance are convenient, and the parts can be replaced locally for repeated use. The burner 8 is replaced, so that the burner can adapt to gas-liquid fuels 22 with different properties, and has strong universality and low use cost.

Further, the combustion improver distribution ring 4, the first pipeline 3, the gas-liquid fuel distribution ring 7, the second pipeline 6, the first connecting pipe 11, the second connecting pipe 15, the bracket 2 and the web 9 are of an integrated structure. Specifically, the integrated structure is a cast integrated structure or a welded integrated structure.

As shown in fig. 2, the burner 8 includes: a burner core 16 and a jacket member 17 are provided in connection. The burner core 16 is communicated with the gas-liquid fuel distribution ring 7; one end of the outer sleeve member 17 is connected with the burner core 16, and the rest part of the outer sleeve member 17 is sleeved on the periphery of the burner core 16 at intervals; the side wall of the jacket piece 17 is provided with an interface communicated with the combustion improver distribution ring 4; the other end of the outer jacket 17 is arranged beyond the burner core 16, or the other end of the outer jacket 17 is arranged flush with the burner core 16. Specifically, the distance between the other end of the outer sleeve 17 and the outlet end of the burner core 16 is 0-20 mm. The distance between the center of the outlet end of the burner 8 and the lower end of the discharger 20 is 5-30 mm. The included angle between the central line of the burner core 16 and the horizontal plane is 0-30 degrees; preferably, the included angle between the center line of the burner core 16 and the horizontal plane is 0-22 °. The burner 8 is made of an alloy material with good heat conduction performance and temperature resistance and corrosion resistance. The self-cooling protection is realized by means of the gas-liquid fuel 22 and the combustion improver 21, so that the burner 8 is prevented from being corroded and damaged under normal working conditions, and the burner is prevented from being easily ablated and damaged by Gao Wenyan flow under severe working conditions when the channel of the re-discharger 20 is blocked.

The main working principle of the slag device is briefly described as follows: the gas-liquid fuel 22 is input into the gas-liquid fuel distribution ring 7 through the second pipeline 6, and then is input into the internal flow passage of the burner core 16 through the second connecting pipe 15; the combustion improver 21 is fed into the combustion improver distribution ring 4 via the first pipeline 3 and then into the flow path between the burner core 16 and the outer jacket 17 via the first connecting pipe 11. The gas-liquid fuel 22 and the combustion improver 21 are rapidly mixed and ignited and burned at the outlet end of the outer sleeve member 17, and the generated high-temperature flame flow enters the discharging passage inside the discharger 20 to discharge and control the inorganic residues 18 and adjust the temperature of the inorganic residues 18, and enters the container space at the upper part of the discharger 20 to disturb the inorganic residues 18.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present application.

Claims

1. A slag pot adapted to be mounted outside the lower end of a discharger (20), characterized in that it comprises:

the combustion improver distribution ring (4) is a pipeline which is annularly arranged along the outer circumference of the discharger (20);

a first pipeline (3) connected with the combustion improver distribution ring (4), wherein the first pipeline (3) is suitable for introducing the combustion improver (21);

a gas-liquid fuel distribution ring (7) which is a pipeline annularly arranged along the outer circumference of the discharger (20);

-a second conduit (6) connected to a gas-liquid fuel distribution ring (7), said second conduit (6) being adapted to introduce a gas-liquid fuel (22);

a plurality of burners (8) arranged along the outer circumference of the lower end of the discharger (20); the burner nozzles (8) are connected with the combustion improver distribution ring (4) and the gas-liquid fuel distribution ring (7); the plurality of burners (8) generate flame flow and high-temperature flue gas (19) and are matched with a discharger (20) to perform disturbance, mixing, oxidation, heating and lifting on the inorganic residues (18) to generate molten inorganic residues (18).

2. The slag set forth in claim 1, characterized in that the oxidizer distribution ring (4) and the gas-liquid fuel distribution ring (7) are both disposed around the center of the slag set, and the oxidizer distribution ring (4) and the gas-liquid fuel distribution ring (7) are coaxially disposed; the combustion improver distribution ring (4) is connected with the gas-liquid fuel distribution ring (7) through a web (9).

3. Slag device according to claim 2, characterized in that an annular baffle (10) is mounted below the web (9), which baffle (10) is adapted to block the flame flow generated by the burner (8).

4. A slag separator as claimed in claim 3, characterized in that the gap between the inner side of the baffle (10) and the discharger (20) is 2-6 mm.

5. The slag cooler as set forth in any one of claims 1-4, characterized in that the slag cooler is mounted on the discharger (20) by means of a flexible structure.

6. Slag device according to any one of claims 1-4, characterized in that the outlets of the burners (8) are arranged horizontally or obliquely downwards; the central lines of the outlets of the burners (8) are intersected in a spherical section.

7. The slag cooler of claim 6, wherein said spherical cross-section is no greater than 10mm in diameter.

8. The slag cooler according to any one of claims 2-4, characterized in that the combustion agent distribution ring (4), the first pipe (3), the gas-liquid fuel distribution ring (7), the second pipe (6) and the web (9) are of one-piece construction.

9. Slag device according to any one of claims 1 to 4, characterized in that said burner (8) comprises:

a burner core (16) communicated with the gas-liquid fuel distribution ring (7);

one end of the outer sleeve (17) is connected with the burner core (16), and the rest part of the outer sleeve (17) is sleeved on the periphery of the burner core (16) at intervals; the side wall of the outer sleeve (17) is provided with an interface communicated with the combustion improver distribution ring (4); the other end of the outer sleeve (17) is arranged beyond the burner core (16), or the other end of the outer sleeve (17) is arranged flush with the burner core (16).

10. Slag device according to claim 9, characterized in that the distance between the other end of the jacket element (17) and the outlet end of the burner core (16) is 0-20 mm.