CN219424363U - Device for preparing synthetic gas by low-pressure pure oxygen gasification of fixed bed - Google Patents

Abstract

The utility model discloses a device for preparing synthetic gas by fixed bed low-pressure pure oxygen gasification, which comprises a gas making furnace main body, wherein the bottom end of the gas making furnace main body is communicated with a mixing tank, one end of the mixing tank is provided with an oxygen preheater, one side of the gas making furnace main body is respectively provided with a three-section cyclone separator, the three-section cyclone separators are communicated with a pipeline, one end of each three-section cyclone separator is communicated with a waste heat boiler through the pipeline, the synthetic gas device enters the mixing tank through pure oxygen and gasifying agent through metering and proportion regulation and is mixed, the temperature is controlled to be 200 ℃ and enters the gas making furnace main body from the bottom, oxidation-reduction reaction is carried out with coke under the high-temperature condition in the furnace, water gas is continuously produced, the gas making furnace main body realizes the function of water circulation cooling by arranging a cooling pipeline at the joint of two water jackets, and the produced water gas is subjected to multiple dust removal and separation through the three-section cyclone separators after being discharged through a smoke outlet pipe, so that the dust removal efficiency is ensured.

Description

Device for preparing synthetic gas by low-pressure pure oxygen gasification of fixed bed

Technical Field

The utility model relates to the technical field of gasification, in particular to a device for preparing synthetic gas by low-pressure pure oxygen gasification of a fixed bed.

Background

The traditional fixed bed intermittent gasification furnace gradually exits from the history stage due to the large environmental protection pressure, high energy consumption and other factors. The improved fixed bed pure oxygen (oxygen enriched) continuous gasifier solves the problem of blowing gas discharge of the fixed bed intermittent gasifier, and effectively improves the carbon conversion rate and the cold gas efficiency, thereby realizing the requirements of energy conservation and environmental protection.

The prior fixed bed pure oxygen continuous gasification is normal pressure gasification, and the normal pressure fixed bed pure oxygen continuous gasification technology has the following defects on a process route: (1) The temperature reduction effect in the furnace is poor in the use process of the gas making furnace main body; (2) The mixed gas in the device flow has poor dust removal effect, is easy to cause insufficient heat recycling, cannot effectively remove dust and recycle heat, and needs a device for preparing synthesis gas by low-pressure pure oxygen gasification of a fixed bed to solve the problem.

Disclosure of Invention

The utility model aims to provide a device for preparing synthetic gas by low-pressure pure oxygen gasification of a fixed bed, which aims to solve the problem that the temperature reduction effect in a furnace is poor in the use process of a gas making furnace main body in the background technology; the mixed gas in the device flow has poor dust removal effect, which easily causes insufficient heat recycling and can not effectively remove dust and recycle heat.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fixed bed low pressure pure oxygen gasification system synthetic gas device, includes the gas making stove main part, gas making stove main part bottom intercommunication has the blending tank, blending tank one end is equipped with oxygen pre-heater, three segmentation cyclone is installed respectively to gas making stove main part one side, the intercommunication has the pipeline on the syllogic cyclone, syllogic cyclone one end is passed through the pipeline and is linked together in waste heat boiler, waste heat boiler keeps away from syllogic cyclone's one end and passes through the pipeline intercommunication in the gas washing tower.

As the preferable technical scheme of the utility model, a supporting seat is fixedly arranged on the gas making furnace main body, one end of the gas making furnace main body is connected with a boiler clamping steam drum, the top end of the gas making furnace main body is provided with a feed hopper, and the feed hopper is communicated with the gas making furnace main body.

As the preferable technical scheme of the utility model, the gas making furnace main body is provided with a plurality of ash discharging ports, and the gas making furnace main body is communicated with the collecting box through the ash discharging ports.

As the preferable technical scheme of the utility model, the gas making furnace main body adopts an upper independent steam water jacket structure and a lower independent steam water jacket structure, a cooling pipeline is arranged at the joint of an upper water jacket and a lower water jacket arranged on the gas making furnace main body, and the cooling pipeline circulates in a water circulation mode.

As the preferable technical scheme of the utility model, the upper end of the gas making furnace main body is communicated with a smoke outlet pipe, and one end of the smoke outlet pipe far away from the gas making furnace main body is communicated with a three-stage cyclone separator.

As the preferable technical scheme of the utility model, the bottom end of the gas making furnace main body is provided with the air blower, and the air blower is positioned at the bottom end of the gas making furnace main body.

As the preferable technical scheme of the utility model, one end of the gas washing tower far away from the waste heat boiler is respectively communicated with the outlet water seal and the water seal through pipelines.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The utility model relates to a device for preparing synthetic gas by fixed bed low-pressure pure oxygen gasification, which is characterized in that the synthetic gas device is mixed in a mixing tank by pure oxygen and gasifying agent through metering and proportion adjustment, the temperature is controlled to be 200 ℃ and enters a gas making furnace main body from the bottom, oxidation reduction reaction is carried out with coke under the high-temperature condition in the furnace, water gas is continuously produced, the gas making furnace main body realizes the function of water circulation cooling by arranging a cooling pipeline at the joint of two water jackets, and the produced water gas is discharged through a smoke outlet pipe and then subjected to multiple dust removal and separation through three groups of cyclone separators, so that the high efficiency of dust removal is ensured.

Drawings

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

FIG. 1 is a schematic structural view of a fixed bed low pressure pure oxygen gasification synthesis gas production apparatus according to an embodiment of the present utility model.

Reference numerals:

1. a gas generating furnace main body; 2. a cooling pipeline; 3. an ash discharge port; 4. a collection box; 5. a blower; 6. a mixing tank; 7. a support base; 8. a feed hopper; 9. a clamping boiler steam drum; 10. a smoke outlet pipe; 11. a pipe; 13. a three-stage cyclone separator; 15. a waste heat boiler; 16. a scrubber tower; 17. an outlet water seal; 18. closing a water seal; 19. an oxygen preheater.

Detailed Description

The utility model is further described below with reference to the accompanying drawings and detailed description:

referring to fig. 1, a device for preparing synthesis gas by low-pressure pure oxygen gasification of a fixed bed according to an embodiment of the present utility model includes a mixing tank 6 connected to a bottom end of a gas making furnace body 1, an oxygen preheater 19 is disposed at one end of the mixing tank 6, three-stage cyclone separators 13 are respectively mounted at one side of the gas making furnace body 1, a pipeline 11 is connected to the three-stage cyclone separators 13, one end of the three-stage cyclone separator 13 is connected to a waste heat boiler 15 through the pipeline 11, and one end of the waste heat boiler 15 far from the three-stage cyclone separators 13 is connected to a scrubber 16 through the pipeline 11.

In this embodiment, fixedly mounted on the gas making furnace main body 1 has supporting seat 7, and gas making furnace main body 1 one end is connected with double-layered pot steam pocket 9, and feeder hopper 8 has been seted up on gas making furnace main body 1 top, and feeder hopper 8 and gas making furnace main body 1 intercommunication have been seted up a plurality of ash discharge ports 3 on the gas making furnace main body 1, and a plurality of ash discharge ports 3 are convenient for discharge the lime-ash after gas making furnace main body 1 gas making is accomplished, and gas making furnace main body 1 communicates with collecting box 4 through ash discharge port 3.

In the embodiment, the gas making furnace main body 1 adopts an upper independent steam water jacket structure and a lower independent steam water jacket structure, a cooling pipeline 2 is arranged at the joint of an upper water jacket and a lower water jacket which are arranged on the gas making furnace main body 1, and the cooling pipeline 2 circulates in a water circulation mode.

Wherein, locate two water jacket junctions with cooling pipeline 2, realize the function of hydrologic cycle cooling through leading to cooling pipeline 2.

In this embodiment, the upper end of the gas making furnace main body 1 is communicated with a smoke outlet pipe 10, and the end of the smoke outlet pipe 10 away from the gas making furnace main body 1 is communicated with a three-stage cyclone separator 13.

Wherein the flue 10 is used to guide water gas into the three-stage cyclone separator 13 in cooperation with the pipe 11.

In the embodiment, the bottom end of the gas generating furnace main body 1 is provided with the blower 5, and the blower 5 is positioned at the bottom end of the gas generating furnace main body 1.

In this embodiment, one end of the scrubber 16, which is far away from the waste heat boiler 15, is respectively connected to an outlet water seal 17 and a water seal 18 through a pipeline 11.

Wherein, the outlet water seal 17 and the combined water seal 18 are arranged to facilitate the spray cooling washing of the closed-loop circulating cooling water of the gas-making circulating water treatment system.

When the device is specifically applied, pure oxygen and gasifying agents are metered and proportionally regulated to be mixed, the temperature is controlled to be 200 ℃, the mixture enters the gas making furnace main body 1 from the bottom, oxidation reduction reaction is carried out on the mixture and coke under the high-temperature condition in the furnace, water gas is continuously produced, the gas making furnace main body 1 realizes the function of water circulation cooling by arranging a cooling pipeline 2 at the joint of two water jackets, when the temperature of the water gas generated by the reaction is about 450-550 ℃, the water gas is discharged from the furnace top, the water gas is subjected to dust removal through a three-stage cyclone separator 13, the water enters a waste heat boiler 15 to recover high-temperature gas waste heat, the byproduct steam with the pressure of 0.15Mpa enters the upper section to be overheated, the temperature of the water enters the bottom of a gas washing tower 16 at about 150-170 ℃, the water cooling tower is sprayed and washed by using circulating cooling water from the gas making circulating water treatment system, the water cooling tower is cooled to 45 ℃ and the entrained dust and tar are washed, the water enters a gas main gas removing tank, the gas is discharged from the tower bottom to the subsequent section after the gas is boosted, the gas making is discharged from the furnace bottom through a trench to the gas making circulating water treatment system, and the sewage is subjected to the circulating water circulation and is recycled by a pump for gasification.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms of "top", "bottom", "one side", "the other side", "front", "rear", "middle portion", "inner", "top", "bottom", etc., are directions or positional relationships based on the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, 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 utility model will be understood in specific cases by those of ordinary skill in the art.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above-described embodiment, but may be modified or substituted for some of the technical features described in the above-described embodiments by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The utility model provides a fixed bed low pressure pure oxygen ization system synthetic gas device, its characterized in that, including gas making stove main part (1), gas making stove main part (1) bottom intercommunication has blending tank (6), blending tank (6) one end is equipped with oxygen preheater (19), three segmentation cyclone (13) are installed respectively to gas making stove main part (1) one side, the intercommunication has pipeline (11) on three segmentation cyclone (13), three segmentation cyclone (13) one end is passed through pipeline (11) and is linked together in waste heat boiler (15), waste heat boiler (15) are kept away from the one end of three segmentation cyclone (13) and are passed through pipeline (11) intercommunication in gas washing tower (16).

2. The device for preparing the synthetic gas by the low-pressure pure oxygen gasification of the fixed bed according to claim 1, wherein a supporting seat (7) is fixedly arranged on the gas generating furnace main body (1), one end of the gas generating furnace main body (1) is connected with a boiler clamping steam drum (9), a feeding hopper (8) is arranged at the top end of the gas generating furnace main body (1), and the feeding hopper (8) is communicated with the gas generating furnace main body (1).

3. The device for preparing the synthetic gas by the low-pressure pure oxygen gasification of the fixed bed according to claim 1, wherein a plurality of ash discharge ports (3) are formed in the gas making furnace main body (1), and the gas making furnace main body (1) is communicated with the collecting box (4) through the ash discharge ports (3).

4. The device for preparing the synthetic gas by the low-pressure pure oxygen gasification of the fixed bed according to claim 1, wherein the gas generating furnace main body (1) adopts an upper independent steam-water jacket structure and a lower independent steam-water jacket structure, a cooling pipeline (2) is arranged at the joint of an upper water jacket and a lower water jacket arranged on the gas generating furnace main body (1), and the cooling pipeline (2) circulates in a water circulation mode.

5. The device for preparing the synthetic gas by the low-pressure pure oxygen gasification of the fixed bed according to claim 1, wherein the upper end of the gas making furnace main body (1) is communicated with a smoke outlet pipe (10), and one end of the smoke outlet pipe (10) far away from the gas making furnace main body (1) is communicated with a three-section cyclone separator (13).

6. The device for preparing the synthetic gas by the low-pressure pure oxygen gasification of the fixed bed according to claim 1, wherein a blower (5) is arranged at the bottom end of the gas generating furnace main body (1), and the blower (5) is positioned at the bottom end of the gas generating furnace main body (1).

7. The device for preparing the synthetic gas by the low-pressure pure oxygen gasification of the fixed bed according to claim 1, wherein one end of the gas washing tower (16) far away from the waste heat boiler (15) is respectively communicated with an outlet water seal (17) and a combined water seal (18) through a pipeline (11).