CN218721487U - Detachable high-temperature hydrolysis combustion reactor nozzle - Google Patents

Abstract

The utility model provides a detachable nozzle of a high-temperature hydrolysis combustion reactor, which comprises a base unit, a furnace mouth and a jacket pipe; the base unit comprises a flange plate, an inner cylinder and a plurality of buckles; the furnace mouth is connected with the inner cylinder; the buckle is clamped with the outer wall of the jacket sleeve; the middle part of the jacket pipe is provided with a throat pipe section; in the utility model, the throat section in the middle of the jacket pipe is of a Venturi structure, and the gas flowing through the position of the jacket pipe forms a negative pressure area, so that the gas flow rate is improved, the combustion area of the high-temperature hydrolysis reaction is longer than that of a conventional reactor, the cooling air at the periphery of the jacket pipe and the hot water in the jacket pipe have better cooling effect on the combustion reaction, the combustion is obviously improved, the brand product of a high-ratio table can be produced more easily, and the condition of uneven particle size distribution is effectively improved; the detachable connecting structure of the furnace nozzle and the inner cylinder facilitates the replacement of furnace nozzles with different specifications so as to meet the production requirements of products with different particle sizes.

Description

Detachable high-temperature hydrolysis combustion reactor nozzle

Technical Field

The utility model relates to a high temperature hydrolysis combustion reactor nozzle technical field specifically is a detachable high temperature hydrolysis combustion reactor nozzle.

Background

The fumed silica product mainly comprises a plurality of subdivided brands of A-150, A-200, A-300, A-380 and the like. The higher the grade, the finer the particle size of the product, for example, the particle size of the powder of A-380 type product is as high as 380 +/-30 m < 2 >/g. The high-grade product is generally applied to industries such as high-transparency liquid glue and the like.

In the production process, the particle size of the product is mainly reduced by increasing the airflow velocity at the outlet of the burner nozzle. However, the conventional jacketed pipe type combustion furnace nozzle is developed from the initial single-layer protective gas and the current multilayer protective gas, and mainly prevents the interference of the inner wall of the furnace body on the air flow and the reaction temperature to a certain extent so as to reduce the influence on the product quality. However, the flow velocity of the gas flow is increased to a certain value, and the smoothness, the processing precision, the residual coking materials and the like of the inner wall of the nozzle of the reactor cause that the mixed gas of gas-phase chlorosilane, hydrogen and combustion-supporting air of the core layer is changed into turbulent flow from laminar flow, on one hand, the inner layer and the outer layer of the reaction flame have serious deviation, the particle size distribution of the product is uneven, and the specific surface area distribution is too wide; on the other hand, the specific surface area of the fumed silica cannot be effectively increased by further increasing the gas velocity.

Publication No. CN212425926U discloses a fumed silica combustion reactor, which comprises a hydrogen nozzle, a reaction gas nozzle and an air nozzle which are connected in sequence, wherein the hydrogen nozzle, the reaction gas nozzle and the air nozzle are respectively provided with a hydrogen inlet, a reaction gas inlet, an air inlet and a corresponding air outlet; a first annular flow channel for hydrogen to flow is formed between the hydrogen nozzle and the reaction gas nozzle, a second annular flow channel for reaction gas to move is formed between the reaction gas nozzle and the air nozzle, and the widths of outlet ends of the first annular flow channel and the second annular flow channel are gradually reduced along the gas flow direction. The combustion area of high temperature hydrolysis reaction is shorter in this patent, and the product quality of production is not good enough, and this combustion reactor's nozzle is changed inconveniently, is not suitable for the user demand of multiple product processing.

SUMMERY OF THE UTILITY MODEL

To the technical insufficiency that exists, the utility model aims to provide a detachable high temperature hydrolysis combustion reactor nozzle to solve the problem mentioned in the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a detachable nozzle of a high-temperature hydrolysis combustion reactor comprises a base unit, a furnace mouth and a jacket pipe; the base unit comprises a flange plate, an inner cylinder and a plurality of buckles; one end of the inner cylinder is fixedly connected with the flange plate, and the axis of the inner cylinder is coincided with the axis of the flange plate; the plurality of buckles are distributed in a circumferential array by taking the axis of the inner cylinder as the center, one ends of the buckles are fixedly connected with the flange plate, and the buckles and the inner cylinder are arranged on the same side of the flange plate; the furnace mouth is detachably connected to one end, far away from the flange, of the inner cylinder; the jacket sleeve is sleeved outside the inner cylinder, and a gap is arranged between the outer part of the inner cylinder and the inner wall of the jacket sleeve; one end of the clamping sleeve close to the flange plate is abutted against the flange plate; the buckle is fixedly clamped with the outer wall of the jacket sleeve; the inner wall of the middle part of the jacket sleeve protrudes towards the axial direction close to the jacket sleeve to form a throat section; the minimum inner diameter of the throat section is less than the maximum inner diameter of the jacketed pipe; the outlet end of the furnace nozzle is arranged towards the throat section.

Preferably, the inner diameter of the throat section decreases from the lateral sides to the middle.

Preferably, the throat section comprises a middle section and two end sections; the middle section is arranged between the two end sections, and two ends of the middle section are respectively fixedly connected with the two end sections; the inner diameter of the end section is gradually reduced from one end far away from the middle section to one end close to the middle section; the inner diameter of the middle section is fixed in size and is equal to the minimum inner diameter of the end sections.

Preferably, the outlet end of the burner tip is disposed within the end section and towards the middle section; a space is arranged between the outer wall of the furnace mouth and the inner wall of the end section.

Preferably, the furnace mouth and the inner barrel are in threaded fit connection.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses in, the throat section at double-layered sleeve pipe middle part is "venturi" structure, and the gaseous negative pressure region that forms of double-layered sleeve pipe position of flowing through has improved the gas flow rate, and the combustion area that makes the pyrohydrolysis reaction is longer than conventional reactor, and the peripheral cooling air of double-layered sleeve pipe and the hot water in the double-layered sleeve pipe are better to the cooling effect of combustion reaction, are showing and have improved the burning, have more easily to produce high ratio table product brand product, and have effectively improved the uneven condition of particle size distribution.

2. The utility model discloses in, the stove mouth of different specifications is convenient for change in order to satisfy the product production demand of different particle diameters with the detachable connection structure of inner tube.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a structural exploded view of the present invention;

fig. 3 is a sectional structure view of the present invention.

Wherein:

1. a flange plate; 2. a jacket pipe; 3. buckling; 4. a furnace mouth; 5. an inner barrel; 6. a throat section; 61. a middle section; 62. an end section.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 3, a detachable nozzle of a high temperature hydrolysis combustion reactor, which is transversely arranged, is more convenient to assemble, disassemble and adjust compared with the longitudinal arrangement; comprises a base unit, a furnace mouth 4 and a jacket sleeve 2; the base unit comprises a flange plate 1, an inner cylinder 5 and a plurality of buckles 3; one end of the inner cylinder 5 is fixedly connected with the flange plate 1, and the axis of the inner cylinder 5 is coincided with the axis of the flange plate 1; the plurality of buckles 3 are distributed in the outer area of the inner cylinder 5 in a circumferential array by taking the axis of the inner cylinder 5 as the center, one end of each buckle 3 is fixedly connected with the flange plate 1, and the buckles 3 and the inner cylinder 5 are arranged on the same side of the flange plate 1; furnace mouth 4 detachable connects the one end of keeping away from ring flange 1 on inner tube 5, can pull down furnace mouth 4 from inner tube 5, changes the furnace mouth 4 of other bores into according to the user demand: producing conventional products by using a large-caliber furnace mouth 4; producing products with fine grain diameter (high specific surface area), and replacing the products with a small-caliber furnace mouth 4; the connection part of the furnace mouth 4 and the inner cylinder 5 is in uniform transition; the jacketed pipe 2 is sleeved outside the inner cylinder 5, a gap is arranged between the outside of the inner cylinder 5 and the inner wall of the jacketed pipe 2 and used as a cooling and inflammable area, and combustible gas is communicated with the gap between the jacketed pipe 2 and the inner cylinder 5 through a pipeline; one end of the jacket sleeve 2 close to the flange plate 1 is abutted against the flange plate 1; the buckle 3 is fixedly clamped with the outer wall of the jacket sleeve 2, and the jacket sleeve 2 is fixedly connected with the flange plate 1 through the buckle 3; the inner wall of the middle part of the jacket sleeve 2 protrudes towards the axial direction close to the jacket sleeve 2 to form a throat section 6, the minimum inner diameter of the throat section 6 is smaller than the maximum inner diameter of the jacket sleeve 2, the throat section is in a Venturi structure, the contraction inner angle is 50-54 degrees, the expansion inner angle is 20 degrees, the gas flow velocity passing through the throat section is remarkably accelerated due to the sharply contracted inner diameter, when the gas flow moves to the rear section position of the throat section 6 continuously, the gas flow velocity passing through the throat section is slowed down due to the expanded inner diameter, and the flame outer flame position after the gas flow ignition and combustion is a negative pressure area; the outlet end of the furnace mouth 4 is arranged towards the throat section 6; the jacket sleeve 2 is filled with water.

Further, the inner diameter of the throat section 6 is gradually reduced from the two sides to the middle, and the velocity of the gas passing through the venturi section is controlled by the venturi structure, so that the velocity of the reaction gas is increased.

Further, the throat section 6 comprises a middle section 61 and two end sections 62; the middle section 61 is arranged between the two end sections 62, and two ends of the middle section 61 are respectively fixedly connected with the two end sections 62; the inner diameter of the end section 62 gradually decreases from the end away from the middle section 61 to the end near the middle section 61; the inner diameter of the middle section 61 is of fixed size and is equal to the smallest inner diameter of the end sections 62; the end section 62 close to the fixed flange is used for a contraction section of the air flow, the contraction internal angle is 50-54 degrees, the other end section 62 is used for an expansion section of the air flow, and the expansion internal angle is 20 degrees; the gas in the middle section 61 flows out to form a negative pressure zone.

Further, the outlet end of the burner 4 is placed in the end section 62 and is arranged towards the middle section 61; a space is arranged between the outer wall of the furnace mouth 4 and the inner wall of the end section 62; the airflow moves out from the outlet end of the furnace mouth 4, enters the throat pipe section 6, then rapidly contracts, the flow rate is accelerated, then rapidly expands, the flow rate becomes slow, and a negative pressure area is generated.

Furthermore, the furnace mouth 4 and the inner cylinder 5 are in threaded fit connection, so that the furnace mouths 4 of different specifications can be replaced quickly.

When the device is used, airflow enters the inner cylinder 5, enters the furnace mouth 4 along the axial direction of the inner cylinder 5 and is sprayed out of the furnace mouth 4 to the throat pipe section 6 of the jacket pipe 2, the venturi structure of the throat pipe section 6 enables the airflow flowing through the throat pipe section to rapidly contract, the gas flow speed is accelerated and then rapidly expanded, the gas flow speed is reduced, the flame outer flame position after ignition and combustion is a negative pressure zone, the reaction gas speed is higher, high-ratio table product brands are easy to produce, and the condition of uneven particle size distribution is effectively improved.

Claims (5)

1. A detachable high-temperature hydrolysis combustion reactor nozzle is characterized by comprising a base unit, a furnace mouth (4) and a jacket sleeve (2); the base unit comprises a flange plate (1), an inner cylinder (5) and a plurality of buckles (3); one end of the inner cylinder (5) is fixedly connected with the flange plate (1), and the axis of the inner cylinder (5) is coincided with the axis of the flange plate (1); the plurality of buckles (3) are distributed in a circumferential array by taking the axis of the inner barrel (5) as the center, one end of each buckle (3) is fixedly connected with the flange plate (1), and the buckles (3) and the inner barrel (5) are arranged on the same side of the flange plate (1); the furnace mouth (4) is detachably connected to one end, far away from the flange plate (1), of the inner cylinder (5); the jacket sleeve (2) is sleeved outside the inner cylinder (5), and a gap is arranged between the outside of the inner cylinder (5) and the inner wall of the jacket sleeve (2); one end of the clamping sleeve (2) close to the flange plate (1) is abutted against the flange plate (1); the buckle (3) is clamped and fixed with the outer wall of the jacket sleeve (2); the inner wall of the middle part of the jacketed pipe (2) protrudes towards the axial direction close to the jacketed pipe (2) to form a throat pipe section (6); the minimum inner diameter of the throat section (6) is smaller than the maximum inner diameter of the jacket sleeve (2); the outlet end of the furnace mouth (4) is arranged towards the throat section (6).

2. The removable pyrohydrolysis combustion reactor nozzle of claim 1, wherein the throat section (6) has an inner diameter that gradually decreases from the sides toward the middle.

3. The removable pyrohydrolysis combustion reactor nozzle of claim 2, wherein the throat section (6) comprises a middle section (61) and two end sections (62); the middle section (61) is arranged between the two end sections (62), and two ends of the middle section (61) are respectively fixedly connected with the two end sections (62); the inner diameter of the end section (62) is gradually reduced from one end far away from the middle section (61) to one end close to the middle section (61); the inner diameter of the middle section (61) is of a fixed size and is equal to the smallest inner diameter of the end sections (62).

4. The removable pyrohydrolysis combustion reactor nozzle according to claim 3, wherein the outlet end of the burner nozzle (4) is disposed in the end section (62) and is disposed towards the middle section (61); a gap is arranged between the outer wall of the furnace mouth (4) and the inner wall of the end section (62).

5. The removable nozzle of a pyrohydrolysis burner reactor according to any one of claims 1 to 4, wherein the burner nozzle (4) and the inner barrel (5) are screw-fittingly connected.

Images