CN216481606U - Combustion device capable of meeting combustion of sludge low-calorific-value gas - Google Patents
Combustion device capable of meeting combustion of sludge low-calorific-value gas Download PDFInfo
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- CN216481606U CN216481606U CN202121763478.1U CN202121763478U CN216481606U CN 216481606 U CN216481606 U CN 216481606U CN 202121763478 U CN202121763478 U CN 202121763478U CN 216481606 U CN216481606 U CN 216481606U
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Abstract
The utility model relates to the technical field of resource utilization of solid wastes, in particular to a combustion device for meeting the requirement of sludge low-calorific-value gas combustion, which comprises supporting legs and a hot blast stove, wherein the hot blast stove is an L-shaped stove body with a hearth and comprises a stove body vertical section and a stove body horizontal section; a burner is arranged at the opening at the top of the vertical section of the furnace body, and a first loop inlet for introducing first combustion air is arranged below the burner; a pipeline for introducing urea is connected to the middle part of the vertical section of the furnace body; the bottom of the furnace body vertical section is inwards contracted to form a conical section, and a second annular inlet for introducing second combustion air is connected to the conical section; and a third loop inlet for introducing cooling air is arranged on the horizontal section of the furnace body. The utility model ensures that the gas forms rotational flow in the hearth, and the rotating directions entering the hearth are the same, so that the gas flow field is not influenced by load change, thereby achieving good turbulent flow effect and ensuring that the hot blast stove meets the requirement of stable combustion of sludge low-heat-value gas.
Description
Technical Field
The utility model relates to the technical field of solid waste resource utilization, in particular to a combustion device for meeting the requirement of sludge low-calorific-value gas combustion.
Background
The sludge is a solid sediment substance generated in the sewage treatment process, and the contained pollutants generally have higher heat values, but the heat values cannot be utilized due to the existence of a large amount of moisture. The sludge pyrolysis gasification technology is a technology which realizes large-scale reduction, stabilization, harmlessness and recycling of sludge on the premise of no odor and no pollution. The thermal efficiency of the pyrolysis gasification technology is high, and organic matters are pyrolyzed into combustible gases such as carbon monoxide, hydrogen, hydrocarbons and the like under the condition of high temperature and oxygen deficiency.
A top-combustion hot blast stove is a common device in the sludge pyrolysis gasification technology, and consists of a combustion device and a combustion chamber) and a heat transfer and heat storage device, the basic working principle is that gas is heated by combustion, and the heated gas can be used for drying sludge. The existing hot blast stove is various, for example, patent document with application number of CN200820107744.3 discloses an industrial hot blast stove which mainly comprises a shell, a combustion chamber, a dilution air port with a flange and a burner, but in the sludge pyrolysis gasification process, the combustible gas generated by the gasification furnace contains more impurities, contains a large amount of water vapor, tar, dust and other substances, and is easy to cause blockage to a pipeline and a burner of the burner, and the existing hot blast stove cannot meet the requirement of sludge low-calorific-value gas combustion. Therefore, the improvement of the structure of the combustion device and the formation of a reasonable and controllable flow field structure with the hearth space become the key for solving the problem.
Disclosure of Invention
The utility model provides a combustion device for meeting the combustion of sludge low-heat-value gas, aiming at solving the technical problems in the background art.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a combustion device meeting the combustion of sludge low-calorific-value gas comprises supporting legs and a hot blast stove arranged above the supporting legs, wherein the hot blast stove is an L-shaped stove body with a hearth, the stove body comprises a stove body vertical section and a stove body horizontal section, and the stove body horizontal section is connected to the lower part of the stove body vertical section at a certain angle;
a burner is arranged at the opening at the top of the vertical section of the furnace body, and a first loop inlet for introducing first combustion air is arranged below the burner; a pipeline for introducing urea is connected to the middle part of the vertical section of the furnace body, a maintenance opening and a pressure gauge interface I are arranged at the position, adjacent to the pipeline, of the vertical section of the furnace body, and a thermocouple interface I is arranged on the furnace wall above the pipeline; the bottom of the furnace body vertical section is inwards contracted to form a conical section, and a second annular inlet for introducing second combustion air is connected to the conical section;
a pressure gauge interface II, a catalyst interface, a thermocouple interface II, an oxygen content analyzer interface and a loop inlet III for introducing cooling air are sequentially arranged on the horizontal section of the furnace body; a flue gas outlet is formed at the opening at the rear part of the horizontal section of the furnace body.
Furthermore, the annular channel inlet comprises a plurality of branch pipelines which are uniformly distributed along the circumferential direction of the vertical section of the furnace body, and the plurality of branch pipelines penetrate through the furnace wall and then are inserted into the hearth of the vertical section of the furnace body;
the second annular channel inlet comprises a plurality of second branch pipelines uniformly arranged along the circumferential direction of the vertical section of the furnace body, and the plurality of second branch pipelines penetrate through the furnace wall and then are inserted into the hearth of the vertical section of the furnace body;
the third annular channel inlet comprises a plurality of third branch pipelines uniformly arranged along the circumferential direction of the horizontal section of the furnace body, and the third branch pipelines penetrate through the furnace wall and then are inserted into the furnace chamber of the vertical section of the furnace body;
the number of the pipelines is two, and the two pipelines are symmetrically distributed on the vertical section of the furnace body.
Furthermore, one side of the furnace body vertical section, which is opposite to the furnace body horizontal section, is provided with an access hole.
Furthermore, the furnace wall of the furnace body is of a two-layer structure and sequentially comprises an inner refractory material layer and an outer heat-insulating layer; the fireproof material layer is a high-strength mullite brick layer, and the heat insulation layer is a calcium carbonate plate layer.
Further, the included angle between the horizontal furnace body section and the vertical furnace body section is 90 degrees.
Furthermore, an ash outlet is formed at the opening at the bottom of the conical section of the vertical section of the furnace body, and a valve is arranged at the ash outlet.
Furthermore, the vertical furnace body section and the horizontal furnace body section are both cylindrical, and the radius of the hearth of the vertical furnace body section is larger than that of the hearth of the horizontal furnace body section.
Furthermore, the supporting legs are connected with the hot blast stove in a welding mode, and the bottoms of the supporting legs are fixed on the ground through embedded foundation bolts.
Furthermore, a heat accumulator is arranged between the pipeline and the thermocouple interface I, and the heat accumulator is an anchoring part formed by pouring refractory materials and high-temperature-resistant steel; a channel for guiding the flue gas is arranged between the heat accumulator and the furnace wall.
Furthermore, the heat accumulator is erected on the furnace wall of the furnace body vertical section through a hollow beam penetrating the heat accumulator.
Through the technical scheme, the utility model has the beneficial effects that:
the hot blast stove is arranged into two sections, namely a vertical section and a horizontal section, of the stove body, the burner is installed at the top of the vertical section of the stove body, the first loop inlet of the first combustion air, the second loop inlet of the second combustion air and the third loop inlet of the cooling air enable gas to form rotational flow in the hearth, the rotating directions of the gas entering the hearth are the same, the gas flow field is not affected by load change, and therefore a good turbulence effect is achieved, and the hot blast stove can meet stable combustion of sludge low-calorific-value gas.
Drawings
FIG. 1 is a schematic view showing the internal structure of a combustion apparatus for satisfactory combustion of sludge low-calorific-value gas according to the present invention.
FIG. 2 is a schematic sectional view at A-A of FIG. 1 in a combustion apparatus for satisfying combustion of sludge low heating value gas in accordance with the present invention.
FIG. 3 is a schematic cross-sectional view at B-B in FIG. 1 of a combustion apparatus for satisfying combustion of sludge low heating value gas according to the present invention.
FIG. 4 is a schematic cross-sectional view at C-C in FIG. 1 of a combustion apparatus for satisfying the combustion of sludge low heating value gas according to the present invention.
FIG. 5 is a schematic cross-sectional view at D-D in FIG. 1 of a combustion apparatus for satisfactory combustion of sludge low heating value gas in accordance with the present invention.
FIG. 6 is a schematic view showing the connection between a heat accumulator and a hollow beam in a combustion apparatus for satisfying the combustion of sludge low-heating-value gas according to the present invention.
The reference numbers in the drawings are as follows:
the gas burner comprises a support leg 1, a burner 2, a pipeline 3, an access hole 4, a pressure gauge interface I5, a thermocouple interface I6, a pressure gauge interface II 7, a catalyst interface 8, a thermocouple interface II 9, an oxygen content analyzer interface 10, a flue gas outlet 11, a branch pipeline 12, a branch pipeline II 13, a branch pipeline III 14, an access hole 15, a refractory material layer 16, a heat insulation layer 17, an ash outlet 18, a valve 19, a heat accumulator 20 and a hollow beam 21.
Detailed Description
The utility model is further described with reference to the following figures and detailed description:
in the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "lateral", "vertical", etc. indicate orientations or positional relationships based on those shown in fig. 1 only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Examples
As shown in fig. 1 to 6, a combustion device satisfying the combustion of sludge low-heating-value gas comprises a supporting leg 1 and a hot blast stove arranged above the supporting leg 1, wherein the hot blast stove is an L-shaped stove body with a hearth, the stove body comprises a stove body vertical section and a stove body horizontal section, and the stove body horizontal section is connected to the lower part of the stove body vertical section at a certain angle;
a burner 2 is arranged at the opening at the top of the vertical section of the furnace body, and a first loop inlet for introducing first combustion air is arranged below the burner 2; a pipeline 3 for introducing urea is connected to the middle part of the vertical section of the furnace body, an access hole 4 and a pressure gauge interface I5 are arranged at the position, adjacent to the pipeline 3, on the vertical section of the furnace body, and a thermocouple interface I6 is arranged on the furnace wall above the pipeline 3; the bottom of the furnace body vertical section is inwards contracted to form a conical section, and a second annular inlet for introducing second combustion air is connected to the conical section;
a pressure gauge interface II 7, a catalyst interface 8, a thermocouple interface II 9, an oxygen content analyzer interface 10 and a loop inlet III for introducing cooling air are sequentially arranged on the horizontal section of the furnace body; a flue gas outlet 11 is formed at the opening at the rear part of the horizontal section of the furnace body.
In the embodiment, the annular inlet comprises a plurality of branch pipelines 12 uniformly arranged along the circumferential direction of the vertical section of the furnace body, and the plurality of branch pipelines 12 penetrate through the furnace wall and then are inserted into the hearth of the vertical section of the furnace body;
the second annular channel inlet comprises a plurality of second branch pipelines 13 which are uniformly distributed along the circumferential direction of the vertical section of the furnace body, and the plurality of second branch pipelines 13 penetrate through the furnace wall and then are inserted into the hearth of the vertical section of the furnace body;
the third annular channel inlet comprises a plurality of branch pipelines third 14 which are uniformly arranged along the circumferential direction of the horizontal section of the furnace body, and the plurality of branch pipelines third 14 penetrate through the furnace wall and then are inserted into the furnace chamber of the vertical section of the furnace body;
the number of the pipelines 3 is two, and the two pipelines are symmetrically distributed on the vertical section of the furnace body.
In this embodiment, an access hole 15 is formed in one side of the furnace body vertical section, which is opposite to the furnace body horizontal section.
In the embodiment, the furnace wall of the furnace body is of a two-layer structure, namely an inner refractory material layer 16 and an outer insulating layer 17 in sequence; the fireproof material layer 16 is a high-strength mullite brick layer, and the heat insulation layer 17 is a calcium carbonate plate layer.
In this embodiment, an included angle between the horizontal furnace body section and the vertical furnace body section is 90 °.
In this embodiment, an ash outlet 18 is formed at an opening at the bottom of the conical section of the vertical section of the furnace body, and a valve 19 is arranged at the ash outlet 18.
In this embodiment, the vertical furnace body section and the horizontal furnace body section are both cylindrical, and the furnace radius of the vertical furnace body section is larger than that of the horizontal furnace body section.
In the embodiment, the supporting leg 1 is connected with the hot blast stove in a welding mode, and the bottom of the supporting leg 1 is fixed on the ground through the embedded foundation bolt.
In this embodiment, a heat accumulator 20 is arranged between the pipeline 3 and the thermocouple interface I6, and the heat accumulator 20 is an anchoring member formed by pouring a refractory material and high-temperature-resistant steel; a channel for guiding the flue gas is arranged between the heat accumulator 20 and the furnace wall.
In this embodiment, the heat storage body 20 is mounted on the furnace wall of the furnace body segment by hollow beams 21 penetrating the heat storage body.
In the utility model, the hot blast stove is arranged in an L shape, the burner 2 is arranged at the top of the vertical section of the stove body, the loop inlet of the first path of combustion-supporting air is divided into a plurality of branch pipelines 12 which are uniformly arranged along the circumferential direction of the vertical section of the stove body, the pipelines 3 for introducing urea are arranged into two symmetrically distributed on the vertical section of the furnace body, the loop inlet of the second combustion air is divided into a second plurality of branch pipelines 13 which are uniformly distributed along the circumferential direction of the vertical section of the furnace body, the loop inlet of the cooling air is divided into a third plurality of branch pipelines 14 which are uniformly distributed along the circumferential direction of the horizontal section of the furnace body, therefore, the rotating directions of the gas entering the hearth are the same, so that the gas flow field is not influenced by load change, therefore, the flue gas of the vertical section of the furnace body can not be prevented from flowing into the horizontal section of the furnace body, and the flue gas of the vertical section of the furnace body can be sucked into the horizontal section of the furnace body, so that a good turbulence effect is achieved, and the hot blast stove can meet the stable combustion of sludge low-calorific-value gas.
The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.
Claims (10)
1. A combustion device meeting the combustion of sludge low-calorific-value gas comprises supporting legs (1) and a hot blast stove arranged above the supporting legs (1), and is characterized in that the hot blast stove is an L-shaped stove body with a hearth, the stove body comprises a stove body vertical section and a stove body horizontal section, and the stove body horizontal section is connected to the lower part of the stove body vertical section at a certain angle;
a burner (2) is arranged at the opening at the top of the vertical section of the furnace body, and a first loop inlet for introducing first combustion air is arranged below the burner (2); a pipeline (3) for introducing urea is connected to the middle part of the vertical section of the furnace body, a maintenance opening (4) and a pressure gauge interface I (5) are arranged at the position, adjacent to the pipeline (3), of the vertical section of the furnace body, and a thermocouple interface I (6) is arranged on the furnace wall above the pipeline (3); the bottom of the furnace body vertical section is inwards contracted to form a conical section, and a second annular inlet for introducing second combustion air is connected to the conical section;
a pressure gauge interface II (7), a catalyst interface (8), a thermocouple interface II (9), an oxygen content analyzer interface (10) and a loop channel inlet III for introducing cooling air are sequentially arranged on the horizontal section of the furnace body; a flue gas outlet (11) is formed at the opening at the rear part of the horizontal section of the furnace body.
2. The combustion device for sludge low heating value gas combustion as claimed in claim 1, wherein the loop inlet comprises a plurality of branch pipelines (12) uniformly arranged along the circumferential direction of the furnace body vertical section, and the plurality of branch pipelines (12) penetrate through the furnace wall and then are inserted into the hearth of the furnace body vertical section;
the second annular channel inlet comprises a plurality of second branch pipelines (13) which are uniformly distributed along the circumferential direction of the vertical section of the furnace body, and the plurality of second branch pipelines (13) penetrate through the furnace wall and then are inserted into the hearth of the vertical section of the furnace body;
the third annular channel inlet comprises a plurality of branch pipelines (14) uniformly arranged along the circumferential direction of the horizontal section of the furnace body, and the plurality of branch pipelines (14) penetrate through the furnace wall and then are inserted into the furnace chamber of the vertical section of the furnace body;
the number of the pipelines (3) is two, and the pipelines are symmetrically distributed on the vertical section of the furnace body.
3. The combustion device for meeting the requirement of sludge low-heating-value gas combustion as claimed in claim 1, wherein a manhole (15) is arranged on one side of the furnace body vertical section, which is opposite to the furnace body horizontal section.
4. The combustion device for sludge low heating value gas combustion as claimed in claim 1, wherein the furnace wall of the furnace body is provided with a two-layer structure, namely an inner refractory material layer (16) and an outer heat insulation layer (17) in sequence; the fireproof material layer (16) is a high-strength mullite brick layer, and the heat-insulating layer (17) is a calcium carbonate plate layer.
5. The combustion device for sludge low heating value gas combustion as claimed in claim 1, wherein the included angle between the horizontal furnace body section and the vertical furnace body section is 90 °.
6. The combustion device for sludge low-heating-value gas combustion as claimed in claim 1, wherein an ash outlet (18) is formed at the bottom opening of the conical section of the vertical section of the furnace body, and a valve (19) is arranged at the ash outlet (18).
7. The combustion device for sludge low-heating-value gas combustion as claimed in claim 1, wherein the vertical furnace body section and the horizontal furnace body section are both cylindrical, and the furnace radius of the vertical furnace body section is larger than that of the horizontal furnace body section.
8. The combustion device for meeting the requirement of sludge low-heating-value gas combustion as claimed in claim 1, wherein the supporting legs (1) are connected with the hot blast stove in a welding manner, and the bottoms of the supporting legs (1) are fixed on the ground through embedded foundation bolts.
9. The combustion device for sludge low-heating-value gas combustion in claim 1 is characterized in that a heat accumulator (20) is arranged between the pipeline (3) and the thermocouple interface I (6), and a channel for guiding flue gas is arranged between the heat accumulator (20) and the furnace wall.
10. A combustion unit for sludge low heating value gas combustion in accordance with claim 9, characterized in that the heat accumulator (20) is erected on the wall of the furnace shaft segment by hollow beams (21) penetrating therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121763478.1U CN216481606U (en) | 2021-07-30 | 2021-07-30 | Combustion device capable of meeting combustion of sludge low-calorific-value gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121763478.1U CN216481606U (en) | 2021-07-30 | 2021-07-30 | Combustion device capable of meeting combustion of sludge low-calorific-value gas |
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| Publication Number | Publication Date |
|---|---|
| CN216481606U true CN216481606U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121763478.1U Active CN216481606U (en) | 2021-07-30 | 2021-07-30 | Combustion device capable of meeting combustion of sludge low-calorific-value gas |
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|---|---|
| CN (1) | CN216481606U (en) |
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2021
- 2021-07-30 CN CN202121763478.1U patent/CN216481606U/en active Active
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