CN210832847U

CN210832847U - Natural gas preheats stove

Info

Publication number: CN210832847U
Application number: CN201921806060.7U
Authority: CN
Inventors: 沈永强; 董兵兵; 刘博�
Original assignee: Xi'an Cambrian Petroleum Technology Co ltd
Current assignee: Xi'an Cambrian Petroleum Technology Co ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-06-23
Anticipated expiration: 2029-10-24

Abstract

The utility model relates to a natural gas preheating furnace in natural gas preheating equipment field. The heat preservation device comprises a base, a heat preservation body is arranged on the base, a furnace body is arranged in the heat preservation body, one end of the furnace body is connected with a rotating shaft, a motor arranged on the outer side of the heat preservation body is connected to the other end of the rotating shaft, corresponding feed inlets and discharge outlets are arranged at two ends of the heat preservation body and the furnace body, an air inlet and an air outlet which are communicated with an inner cavity of the heat preservation body are arranged at two ends of the heat preservation body, a main furnace body is arranged on one side, away from the motor, of the heat preservation body, a main furnace body exhaust pipe is arranged on the main furnace body, the air inlet is communicated with the main furnace body exhaust pipe through a pipeline, an air inlet pipe and an air outlet pipe which are connected with the heat preservation body in a rotating mode are arranged at. The crystal water evaporated in the furnace body is taken away by introducing dry gas into the air inlet pipe and is discharged into the atmosphere through the air outlet pipe.

Description

Natural gas preheats stove

Technical Field

The utility model belongs to the technical field of the technique of natural gas preheating equipment and specifically relates to a natural gas preheating furnace is related to.

Background

When the superfine hollow microspheres are produced, the ore sand needs to be preheated to about 300 ℃ and 600 ℃, a part of crystal water contained in the ore sand is evaporated, and then the ore sand is put into the main furnace body for heating, expansion and vitrification, and the preheating effect directly influences the quality of products. The preheating furnace adopted by the expanded perlite at present is internally fired and externally fired, the internal combustion type preheating furnace is energy-saving, but partial ore sand is excessively preheated due to partial contact of flame and ore sand, and later expansion is influenced; the external combustion type preheating furnace has low heat efficiency and difficult temperature adjustment, and the preheating temperature is difficult to control. Therefore, it is necessary to develop a new type of expanded perlite preheating device, which can not only reduce the energy consumption, but also ensure the preheating quality.

Chinese patent with publication number CN202164239U discloses a novel preheating production device for expanded perlite, which is technically characterized by comprising a preheating furnace, an expansion furnace, a material conveying pipe, a heat exchanger and an induced air pipe, wherein the material conveying pipe is connected with a feeding bin of the preheating furnace and the expansion furnace, the preheating furnace comprises a rotatable furnace body and an external sealed heat insulation body, the rotatable furnace body is arranged inside the external sealed heat insulation body, a feeding port and a discharging port which are communicated with an inner cavity of the rotary furnace body are arranged at two ends of the external sealed heat insulation body, the discharging port is connected with the feeding bin of the expansion furnace through the material conveying pipe, the heat exchanger is arranged at an outlet position of the expansion furnace, one end of the induced air pipe is connected with the heat exchanger, and the. This technical scheme leads into the preheating furnace through the induced duct with the exhaust waste gas waste heat in the expansion furnace work, utilizes abandonment waste heat to preheat the ore sand, has saved the required fuel of ore sand preheating stage, has practiced thrift the energy, has improved expansion system's fuel utilization ratio.

Although this scheme has reduced the energy consumption, the crystal water that the ore sand in preheating the stove evaporated can't effectively discharge, fills in the crystal water of furnace body inside can the adhesion on the ore sand after the furnace body cooling, influences the preheating quality of ore sand.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a natural gas preheating furnace has effectively solved the unable effective exhaust problem of crystal water that the ore sand evaporated in the preheating furnace.

The above technical purpose of the present invention can be achieved by the following technical solutions: a natural gas preheating furnace comprises a base, a heat insulator is arranged on the base, a furnace body is arranged in the heat insulator, one end of the furnace body is connected with a rotating shaft, the other end of the rotating shaft is connected with a motor arranged outside the heat insulator, two ends of the heat insulator and the furnace body are respectively provided with a corresponding feed inlet and a corresponding discharge outlet, a feed inlet I and a feed inlet II are arranged at the feed inlet of the furnace body and the heat insulator, a discharge outlet I and a discharge outlet II are arranged at the discharge outlet of the furnace body and the heat insulator, an air inlet and an air outlet which are communicated with an inner cavity of the heat insulator are arranged at two ends of the heat insulator, a main furnace body is arranged at one side of the heat insulator far away from the motor, a main furnace body exhaust pipe is arranged on the main furnace body, the air inlet is communicated with the main furnace body exhaust pipe through a pipeline, an air inlet pipe, the air inlet pipe is far away from the outer one end of heat preservation body and rotates and is connected with the fan, the air inlet pipe is close to the heat preservation body one end and is provided with gas drying device.

Through adopting above-mentioned technical scheme, the fan sends into the air-intake pipe with the air and carries out the drying through gas drying device to the air, and in the air admission furnace body of drying, take away the crystal water of the internal evaporation of furnace and discharge to the atmosphere by the play tuber pipe, prevent to fill on the furnace body cooling back adhesion of the crystal water of the inside evaporation of furnace body on the ore sand, influence the preheating quality of ore sand.

Further, the fan is connected to the main furnace exhaust pipe.

Through adopting above-mentioned technical scheme, through connecting the fan in main furnace body blast pipe department, blow in the air-intake pipe with the steam that main furnace body produced, compare and let in the air, the main furnace body combustion gas has certain temperature, can strengthen thermal utilization ratio, and the main furnace combustion gas is water and carbon dioxide, compares in letting in the air, and these gases are comparatively pure, have prevented that the impurity in ore sand and the air from reacting, influence the preheating quality of ore sand.

Furthermore, the rotating shaft is hollow, one side of the rotating shaft, which is close to the furnace body, is fixedly communicated with the air outlet pipe, and one section of the rotating shaft, which is positioned outside the heat preservation body, is provided with a plurality of air outlets.

Through adopting above-mentioned technical scheme, the gas that has the crystal water of being evaporated leads to hollow pivot to in arranging to the atmosphere by the air outlet that sets up in the pivot, prevent to fill in the inside crystal water of being evaporated of furnace body after the furnace body cooling adhesion on the ore sand, influence the preheating quality of ore sand.

Furthermore, the end part of the air outlet pipe in the furnace body is connected with an ore sand filter screen.

Through adopting above-mentioned technical scheme, through setting up the ore sand filter screen, it is intraductal effectively to have prevented that gas from bringing the ore sand into the air-out.

Further, be provided with detachable dust fall filter screen on the air outlet.

Through adopting above-mentioned technical scheme, through setting up the dust fall filter screen, prevented to a certain extent that the ore sand dust is by the atmospheric air of being discharged, the dustproof filter screen sets up to detachable, is convenient for to the clearance of dust fall filter screen.

Furthermore, the air inlet is arranged on one side, close to the air inlet pipe, of the upper portion of the cylinder wall of the heat preservation body, and the air outlet is arranged on one side, close to the air outlet pipe, of the lower portion of the cylinder wall of the heat preservation body.

By adopting the technical scheme, the air inlet is higher than the air outlet, so that the flue gas exhausted by the main furnace body can be favorably filled in the inner cavity of the heat insulation body, and the utilization rate of heat can be favorably improved.

Furthermore, one side of the air inlet close to the furnace body is connected with an air-entraining pipe, a plurality of air-entraining holes are formed in the air-entraining pipe, and the air-entraining pipe is arranged in a spiral mode close to the inner wall of the heat insulator.

By adopting the technical scheme, the air guide pipe is arranged and is spirally arranged, so that the flue gas discharged by the main furnace body is further filled in the inner cavity formed by the heat insulation body and the furnace body, the utilization rate of heat is favorably improved, and the energy consumption is reduced.

Furthermore, but feed door I opens back overlap joint in II departments of feed door, but the overlap joint is in II departments of discharge door after I opens of discharge door.

Through adopting above-mentioned technical scheme, open feed door I, one side that feed door I kept away from the pin joint overlap joint at II departments of feed door just, open discharge door I, one side that discharge door I kept away from the pin joint overlap joint at II departments of discharge door just, has prevented during the ore sand from falling into the heat preservation inner chamber when the feeding with the ejection of compact.

To sum up, the beneficial effects of the utility model are that:

(1) dry gas is introduced into the furnace body from the air inlet pipe, takes away crystal water evaporated in the furnace body and is discharged into the atmosphere from the air outlet pipe, so that the evaporated crystal water filled in the furnace body is prevented from being adhered to the ore sand after the temperature of the furnace body is reduced, and the preheating quality of the ore sand is prevented from being influenced;

(2) by arranging the ore sand filter screen, ore sand is effectively prevented from being brought into the air outlet pipe by gas, and by arranging the dust-falling filter screen, ore sand dust is prevented from being discharged into the atmosphere to a certain extent;

(3) the air inlet is higher than the air outlet, the air inlet is provided with the air entraining pipe, and the air entraining hole is formed in the air entraining pipe, so that the heat utilization rate is improved, and the energy consumption is reduced.

Drawings

FIG. 1 is a schematic structural view of a natural gas preheating furnace according to the present invention;

FIG. 2 is a schematic cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic view of a first perspective explosion configuration of the present natural gas preheat furnace;

fig. 4 is a schematic diagram of the second-view explosion structure of the natural gas preheating furnace.

Reference numerals: 1. a base; 2. a thermal insulator; 3. a furnace body; 4. a rotating shaft; 5. a motor; 6. a feed inlet; 7. a discharge port; 8. a feeding door I; 9. a feeding door II; 10. a discharge door I; 11. a discharge door II; 12. an air inlet; 13. an air outlet; 14. a main furnace body exhaust pipe; 15. an air outlet pipe; 16. an air inlet pipe; 17. an air outlet pipe; 18. a fan; 19. a gas drying device; 20. an air outlet; 21. a sand screen; 22. a dust fall filter screen; 23. a bleed pipe; 24. and an air guide hole.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a natural gas preheating furnace disclosed by the utility model comprises a base 1, a heat insulator 2 is arranged on the base 1, a furnace body 3 is arranged in the heat insulator 2, a corresponding feed inlet 6 and a corresponding discharge outlet 7 are arranged at both ends of the heat insulator 2 and the furnace body 3, a feed door i 8 is arranged at the feed inlet 6 of the furnace body 3, the feed door i 8 is hinged at the bottom of the feed inlet 6, a feed door ii 9 is arranged at the feed inlet 6 of the heat insulator 2, the feed door ii 9 is hinged at the bottom of the feed inlet 6, a discharge door i 10 is arranged at the discharge outlet 7 of the furnace body 3, the discharge door i 10 is hinged at the bottom of the discharge outlet 7, a discharge door ii 11 is arranged at the discharge outlet 7 of the heat insulator 2, an air inlet 12 and an air outlet 13 (refer to fig. 3) which are communicated with the inner cavity of the heat insulator 2, the air outlet 13 is connected with an air outlet pipe 15, a main furnace body is arranged on one side of the heat insulating body 2 far away from the motor 5, a main furnace body exhaust pipe 14 is arranged on the main furnace body, and the air inlet 12 is communicated with the main furnace body exhaust pipe 14 through a pipeline.

Referring to fig. 2, to keep the gas entering the furnace 3 relatively clean, a fan 18 is connected to the main furnace exhaust pipe 14.

Referring to fig. 2, in order to prevent ore from falling into the inner cavity of the heat insulation body 2, the feeding door I8 can be lapped on the feeding door II 9 after being opened, and the discharging door I10 can be lapped on the discharging door II 11 after being opened.

Referring to fig. 2 and 3, in order to solve the problem that the evaporated crystal water in the furnace body 3 cannot be discharged, an air inlet pipe 16 and an air outlet pipe 17 rotatably connected to the heat insulator 2 are disposed at the axial center of the two ends of the furnace body 3, the air inlet pipe 16 and the air outlet pipe 17 penetrate through the heat insulator 2, a blower 18 is rotatably connected to one end of the air inlet pipe 16 away from the heat insulator 2, a gas drying device 19 is disposed at one end of the air inlet pipe 16 close to the heat insulator 2, in this embodiment, the gas drying device 19 is a drying box, a plurality of drying holes are disposed on the drying box, a silica gel desiccant is disposed in the drying box, a rotating shaft 4 is connected to one end of the furnace body 3 close to the air outlet pipe 17, a motor 5 disposed outside the heat insulator 2 is connected to the other end of the rotating shaft 4, the rotating shaft 4 is hollow, one side of the rotating shaft 4 close to the furnace body 3 is fixedly communicated with the air outlet pipe 17, a plurality, in this embodiment, 20 are specifically set.

Referring to fig. 2 and 3, in order to prevent the ore sand in the furnace body 3 from entering the air outlet pipe 17, an ore sand filter screen 21 is fixed on the end of the air outlet pipe 17 at the furnace body 3 by bolts, and a detachable dust fall filter screen 22 is arranged on the air outlet 20 to prevent the dust of the ore sand from being discharged into the atmosphere.

Further, in order to achieve the purposes of improving the utilization rate of heat and reducing energy consumption, referring to fig. 3 and 4, the air inlet 12 is arranged on one side of the upper portion of the cylinder wall of the heat preservation body 2 close to the air inlet pipe 16, the air outlet 13 is arranged on one side of the lower portion of the cylinder wall of the heat preservation body 2 close to the air outlet pipe 17, one side of the air inlet 12 close to the furnace body 3 is connected with the air introducing pipe 23, a plurality of air introducing holes 24 are formed in the air introducing pipe 23, and the air introducing pipe 23 is arranged in a spiral mode close to the.

The specific working process is as follows: firstly, opening a feeding door I8 and a feeding door II 9, putting ore sand into a furnace body 3, wherein the added ore sand is about one half or less than one half of the volume of the furnace body, then, preheating the ore sand, starting a motor 5, driving the furnace body 3 to rotate around a rotating shaft 4 by the motor 5 through the rotating shaft 4, introducing high-temperature gas produced by combustion of natural gas into an air inlet 12 from a main furnace body exhaust pipe 14 along a pipeline, and entering an inner cavity of a heat insulator 2 through an air guide pipe 23 and an air guide hole 24 which are connected with the air inlet 12 to disperse in the inner cavity of the heat insulator 2; meanwhile, an air inlet pipe 16 connected to the exhaust pipe 14 of the main furnace body shunts high-temperature gas, the high-temperature gas is accelerated by a fan 18 and then dried by a gas drying device 19, the dried gas is introduced into the furnace body 3, the evaporated crystal water in the furnace body 3 is brought to an air outlet pipe 17 and is discharged along an air outlet 20 arranged on the rotating shaft 4, an ore sand filter screen 21 prevents ore sand from entering the air outlet pipe 17, and a dust fall filter screen 22 prevents ore sand dust from entering the atmosphere; after one end time, twist the bolt of dust fall filter screen 22, pull down dust fall filter screen 22 and clear up it, install dust fall filter screen 22 in air outlet 20 department after the clearance finishes.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A natural gas preheating furnace comprises a base (1), wherein a heat preservation body (2) is arranged on the base (1), a furnace body (3) is arranged in the heat preservation body (2), one end of the furnace body (3) is connected with a rotating shaft (4), the other end of the rotating shaft (4) is connected with a motor (5) arranged on the outer side of the heat preservation body (2), two ends of the heat preservation body (2) and the furnace body (3) are respectively provided with a corresponding feeding port (6) and a corresponding discharging port (7), a feeding door I (8) and a feeding door II (9) are arranged at the feeding ports (6) of the furnace body (3) and the heat preservation body (2), a discharging door I (10) and a discharging door II (11) are arranged at the discharging ports (7) of the furnace body (3) and the heat preservation body (2), an air inlet (12) and an air outlet (13) which are communicated with the inner cavity of the, the method is characterized in that: one side that motor (5) were kept away from in insulator (2) is provided with the main furnace body, is provided with main furnace body blast pipe (14) on the main furnace body, air inlet (12) and main furnace body blast pipe (14) are through the pipeline intercommunication, and gas outlet (13) are connected with outlet duct (15), the axle center department at furnace body (3) both ends is provided with rotates air-supply line (16) and the play tuber pipe (17) of being connected with insulator (2), heat insulator (2) setting is worn out with play tuber pipe (17) to air-supply line (16), the outer one end rotation of heat insulator (2) is kept away from in air-supply line (16) is connected with fan (18), the one end that air-supply line (16) are close to insulator (2) is provided with gas drying device (19).

2. A natural gas preheating furnace according to claim 1, characterized in that: the fan (18) is connected to the main furnace exhaust pipe (14).

3. A natural gas preheating furnace according to claim 1, characterized in that: the rotary shaft (4) is arranged to be hollow, one side of the rotary shaft (4) close to the furnace body (3) is fixedly communicated with the air outlet pipe (17), and one section of the rotary shaft (4) located outside the heat insulator (2) is provided with a plurality of air outlets (20).

4. A natural gas preheating furnace according to claim 3, characterized in that: the end part of the air outlet pipe (17) in the furnace body (3) is connected with an ore sand filter screen (21).

5. The natural gas preheating furnace according to claim 4, characterized in that: and a detachable dust-settling filter screen (22) is arranged on the air outlet (20).

6. A natural gas preheating furnace according to claim 1, characterized in that: the air inlet (12) is arranged on one side, close to the air inlet pipe (16), of the upper portion of the cylinder wall of the heat preservation body (2), and the air outlet (13) is arranged on one side, close to the air outlet pipe (17), of the lower portion of the cylinder wall of the heat preservation body (2).

7. The natural gas preheating furnace according to claim 6, characterized in that: one side that air inlet (12) are close to furnace body (3) is connected with bleed pipe (23), a plurality of bleed holes (24) have been seted up on bleed pipe (23), the inner wall that heat-insulating body (2) are pressed close to in bleed pipe (23) spirals the setting.

8. A natural gas preheating furnace according to claim 1, characterized in that: the feeding door I (8) can be lapped on the feeding door II (9) after being opened, and the discharging door I (10) can be lapped on the discharging door II (11) after being opened.