CN212777400U - Yellow phosphorus-burning tail gas boiler with hot air combustion supporting function - Google Patents
Yellow phosphorus-burning tail gas boiler with hot air combustion supporting function Download PDFInfo
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- CN212777400U CN212777400U CN202021199303.8U CN202021199303U CN212777400U CN 212777400 U CN212777400 U CN 212777400U CN 202021199303 U CN202021199303 U CN 202021199303U CN 212777400 U CN212777400 U CN 212777400U
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- tail gas
- yellow phosphorus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses a take hot-blast combustion-supporting yellow phosphorus tail gas boiler that fires, including yellow phosphorus tail gas combustion area, radiation heat transfer district and convection heat transfer district, yellow phosphorus tail gas combustion area is a level shape setting, radiation heat transfer district and convection heat transfer district are pi shape setting. One end of the yellow phosphorus tail gas combustion area is provided with a yellow phosphorus tail gas burner, the other end of the yellow phosphorus tail gas combustion area is communicated with the bottom end of the radiation heat transfer area, the top end of the radiation heat transfer area is connected with the top end of the convection heat transfer area through a turning flue, and the side surface of the bottom end of the convection heat transfer area is provided with a flue gas outlet. The yellow phosphorus tail gas combustion area is provided with a boiling buried tube group, the radiation heat transfer area is a cavity type membrane water-cooled wall tube group, the convection heat transfer area is sequentially provided with a water protection section, a steam superheater and an air preheater from top to bottom, and a steam pocket is arranged above the steering flue. The utility model provides a yellow phosphorus tail gas cause the extravagant and environmental pollution's of energy through the direct atmospheric combustion of torch problem.
Description
Technical Field
The utility model relates to a boiler, more specifically relate to a take hot-blast combustion-supporting yellow phosphorus tail gas boiler that fires.
Background
The main process route for producing yellow phosphorus is as follows: the phosphorus ore, the silica and the coke are added into an electric furnace, materials are melted in the electric furnace and undergo various chemical reactions such as reduction of phosphorus and the like, furnace gas and electric furnace slag are generated, and the furnace gas is conveyed into a condensation tower and sprayed with water to recover the phosphorus in the furnace gas. The recovered phosphorus enters a refining tank, after heating, heat preservation, rinsing and sedimentation, crude phosphorus is separated into phosphorus sludge and finished yellow phosphorus, and the finished yellow phosphorus is filled into a finished product tank and then is packed by siphoning. And tail gas from the condensing tower is distributed through a tail gas main water seal, part of the tail gas is sent to the raw material for drying, and the rest of the tail gas is ignited and exhausted. At present, most of yellow phosphorus tail gas is directly discharged and combusted by a torch, so that huge energy waste and environmental pollution are caused.
The yellow phosphorus production industry is a typical high-energy consumption industry, and in recent years, the country continuously carries out macroscopic regulation and control, saves energy and reduces consumption, thereby forming a problem which must be completed by the yellow phosphorus production industry. Therefore, the development of the boiler burning yellow phosphorus tail gas has important significance. The utility model discloses a under the big background of china's construction resource saving type, environment-friendly society, realize the in-process of novel industrialization road and propose, aim at promoting the low energy consumption production of yellow phosphorus trade, realize circular economy, have good environmental benefit and social.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take hot-blast combustion-supporting yellow phosphorus tail gas boiler that fires, take hot-blast combustion-supporting yellow phosphorus tail gas boiler that fires has solved yellow phosphorus tail gas and has caused the extravagant and environmental heat pollution's of energy problem through the direct atmospheric combustion of torch.
In order to achieve the technical purpose, the utility model adopts the following technical proposal:
the utility model provides a take combustion-supporting yellow phosphorus tail gas fired boiler of hot-blast, includes yellow phosphorus tail gas combustion area, radiant heat transfer district, convection heat transfer district and steam pocket, wherein:
one end of the yellow phosphorus tail gas combustion area is provided with a yellow phosphorus tail gas burner, and the other end of the yellow phosphorus tail gas combustion area is communicated with the bottom end of the radiation heat transfer area; the top end of the radiation heat transfer area is connected with the top end of the convection heat transfer area through a turning flue, and the side surface of the bottom end of the convection heat transfer area is provided with a flue gas output port;
the yellow phosphorus tail gas combustion area is provided with a boiling buried tube group, the radiation heat transfer area is a cavity type membrane water-cooled wall tube group, the convection heat transfer area is sequentially provided with a water protection section, a steam superheater and an air preheater from top to bottom, and a steam pocket is arranged above the steering flue;
the steam pocket is respectively connected with the boiling buried tube group, the cavity type membrane water wall tube group, the water protection section and the steam superheater through a tube system, and the boiling buried tube group, the cavity type membrane water wall tube group and the water protection section form a steam-water natural circulation loop through an ascending tube, a descending tube and the steam pocket.
Furthermore, the yellow phosphorus tail gas combustion area is horizontally arranged in a straight line, and the radiation heat transfer area and the convection heat transfer area are connected into a pi-shaped structure through a turning flue.
Further, the inlet end of the air preheater is communicated with a cold air pipeline, and the outlet end of the air preheater is communicated with the yellow phosphorus tail gas combustor through a hot air pipeline.
Furthermore, a high-heat-conduction isolation layer is coated on the surface of the boiling buried tube group heat transfer tube bundle.
Further, the water protection section, the steam superheater and the air preheater are modular tube boxes.
Further, the heat transfer pipe bundle of the air preheater is an enamel pipe.
Further, the yellow phosphorus tail gas burner is a low-nitrogen burner.
Furthermore, the bottoms of the yellow phosphorus tail gas combustion area, the radiation heat transfer area and the convection heat transfer area are all provided with liquid discharge devices.
The yellow phosphorus-burning tail gas boiler with hot air combustion supporting has the following advantages and effects:
1. the yellow phosphorus-fired tail gas boiler with hot air combustion supporting is arranged in a Pi-shaped structure of a radiation heat transfer area and a convection heat transfer area, so that the occupied area of the boiler is effectively reduced; the modular tube boxes of the water protection section, the steam superheater and the air preheater are assembled and transported to an installation site, so that the installation efficiency of the installation site is greatly improved, the construction cost of a boiler is reduced, and the capital expenditure of yellow phosphorus production enterprises is saved. The surface of the heat transfer tube bundle of the boiling buried tube group is coated with a high-heat-conduction isolating layer, and the surface of the heat transfer tube bundle is not in direct contact with high-temperature flue gas; the heat transfer pipe bundle of the air preheater is an enamel pipe; effectively prolongs the service life of equipment and improves the fund utilization rate of yellow phosphorus production enterprises.
2. The steam generated by the boiler burning the yellow phosphorus tail gas with hot air combustion supporting is used for production and living of yellow phosphorus production enterprises, and the operation cost of the yellow phosphorus production enterprises is reduced.
3. The yellow phosphorus tail gas fired boiler with hot air combustion supporting adopts a low-nitrogen burner, the concentration of nitrogen oxides in the exhaust smoke of the yellow phosphorus tail gas fired boiler with hot air combustion supporting meets the environmental protection requirement, and the environmental protection benefit is remarkable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a partially enlarged (rotated) view of the boiling tube bundle of the present invention;
in the figure: 1. the device comprises a yellow phosphorus tail gas combustion area, a radiation heat transfer area, a convection heat transfer area, a steam pocket, a turning flue, a flue gas outlet 6, a boiling buried pipe group 7, a cavity type membrane water wall pipe group 8, a water protection section 9, a steam superheater 10, an air preheater 11, a pipe system 12, an ascending pipe 13, a descending pipe 14, an air preheater inlet end 15, an air preheater outlet end 16, a high heat conduction isolation layer 17, an enamel pipe 18, a liquid discharge device 19 and a yellow phosphorus tail gas burner 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Unless specifically stated otherwise, the relative arrangement of the components and steps, expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented in other different ways (rotated 90 degrees or at other orientations).
As shown in fig. 1 and fig. 2, a take combustion-supporting yellow phosphorus tail gas boiler that fires of hot-blast, including yellow phosphorus tail gas combustion area 1, radiation heat transfer district 2, convection heat transfer district 3 and steam pocket 4, wherein: the yellow phosphorus tail gas combustion area 1 is horizontally arranged in a straight line shape, and the radiation heat transfer area 2 and the convection heat transfer area 3 are connected through a turning flue to form a pi-shaped structure; specifically, the method comprises the following steps: one end of the yellow phosphorus tail gas combustion area 1 is provided with a yellow phosphorus tail gas burner 20, the other end of the yellow phosphorus tail gas combustion area is communicated with the bottom end of the radiation heat transfer area 2, the top end of the radiation heat transfer area 2 is connected with the top end of the convection heat transfer area 3 through a turning flue 5, and the side surface of the convection heat transfer area 3 close to the bottom end is provided with a flue gas output port 6; the yellow phosphorus tail gas combustion area 1 is provided with a boiling buried tube group 7, the radiation heat transfer area 2 is a cavity type membrane wall tube group 8, the convection heat transfer area 3 is sequentially provided with a water protection section 9, a steam superheater 10 and an air preheater 11 from top to bottom, and a steam pocket 4 is arranged above the steering flue 5; the steam drum 4 is respectively connected with a boiling buried tube group 7, a cavity type membrane water wall tube group 8, a water protection section 9 and a steam superheater 10 through a tube system 12, and the boiling buried tube group 7, the cavity type membrane water wall tube group 8 and the water protection section 9 form a steam-water natural circulation loop with the steam drum 4 through an ascending tube 13 and a descending tube 14; the inlet end 15 of the air preheater 11 is communicated with a cold air pipeline, and the outlet end 16 is communicated with the yellow phosphorus tail gas combustor 20 through a hot air pipeline.
The surface of the heat transfer tube bundle of the boiling buried tube group 7 is coated with a high heat conduction isolation layer 17, so that the surface of the heat transfer tube bundle is not in direct contact with high-temperature flue gas.
The water protection section 9, the steam superheater 10 and the air preheater 11 are modular tube boxes.
The heat transfer pipe bundle of the air preheater 11 is an enamel pipe 18.
The yellow phosphorus tail gas burner 20 is a low nitrogen burner.
And liquid discharge devices 19 are arranged at the bottoms of the yellow phosphorus tail gas combustion area 1, the radiation heat transfer area 2 and the convection heat transfer area 3.
Flue gas flow: the yellow phosphorus tail gas enters a yellow phosphorus tail gas combustor 20 to be mixed with hot air and fully combusted to generate high-temperature flue gas, and the high-temperature flue gas is initially cooled in a yellow phosphorus tail gas combustion area 1 and then enters a radiation heat transfer area 2; the flue gas further cools in the radiation heat transfer area 2 and then enters the convection heat transfer area 3 and sequentially flushes the water protection section 9, the steam superheater 10 and the air preheater 11, and after heat exchange is completed, the flue gas is discharged through a flue gas outlet 6 arranged on the side surface of the bottom end of the convection heat transfer area 3.
Steam-water flow: a steam-water natural circulation loop is constructed by the water supply steam drum 4, the boiling buried pipe group 7, the cavity type membrane wall pipe group 8 and the water protection section 9 through the ascending pipe 13 and the descending pipe 14 and the steam drum 4, saturated steam generated in the steam drum 4 is further heated by the steam superheater 10 to form superheated steam, and the superheated steam is sent to a steam pipe network.
Claims (8)
1. The utility model provides a take combustion-supporting yellow phosphorus tail gas fired boiler of hot-blast, its characterized in that, includes yellow phosphorus tail gas combustion area, radiation heat transfer district, convection heat transfer district and steam pocket, wherein:
one end of the yellow phosphorus tail gas combustion area is provided with a yellow phosphorus tail gas burner, and the other end of the yellow phosphorus tail gas combustion area is communicated with the bottom end of the radiation heat transfer area; the top end of the radiation heat transfer area is connected with the top end of the convection heat transfer area through a turning flue, and the side surface of the bottom end of the convection heat transfer area is provided with a flue gas output port;
the yellow phosphorus tail gas combustion area is provided with a boiling buried tube group, the radiation heat transfer area is a cavity type membrane water-cooled wall tube group, the convection heat transfer area is sequentially provided with a water protection section, a steam superheater and an air preheater from top to bottom, and a steam pocket is arranged above the steering flue;
the steam pocket is respectively connected with the boiling buried tube group, the cavity type membrane water wall tube group, the water protection section and the steam superheater through a tube system, and the boiling buried tube group, the cavity type membrane water wall tube group and the water protection section form a steam-water natural circulation loop through an ascending tube, a descending tube and the steam pocket.
2. The yellow phosphorus tail gas boiler with hot air combustion supporting function according to claim 1, wherein the yellow phosphorus tail gas combustion area is horizontally arranged in a straight line, and the radiation heat transfer area and the convection heat transfer area are connected into a pi-shaped structure through a turning flue.
3. The yellow phosphorus tail gas fired boiler with hot air combustion supporting according to claim 2, wherein the inlet end of the air preheater is communicated with a cold air pipeline, and the outlet end of the air preheater is communicated with the yellow phosphorus tail gas burner through a hot air pipeline.
4. The yellow phosphorus-fired tail gas boiler with hot air combustion supporting function according to claim 3, wherein the surface of the boiling buried tube group heat transfer tube bundle is coated with a high-heat-conductivity isolation layer.
5. The yellow phosphorus-fired tail gas boiler with hot air combustion supporting function according to claim 4, wherein the water protection section, the steam superheater and the air preheater are modular tube boxes.
6. The yellow phosphorus-fired tail gas boiler with hot air combustion-supporting function according to claim 5, wherein the air preheater heat transfer tube bundle is an enamel tube.
7. The yellow phosphorus tail gas boiler with hot blast combustion supporting function according to claim 6, wherein the yellow phosphorus tail gas burner is a low-nitrogen burner.
8. The yellow phosphorus tail gas boiler with hot blast combustion supporting function according to claim 7, wherein the bottoms of the yellow phosphorus tail gas combustion area, the radiation heat transfer area and the convection heat transfer area are provided with liquid discharging devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021199303.8U CN212777400U (en) | 2020-06-24 | 2020-06-24 | Yellow phosphorus-burning tail gas boiler with hot air combustion supporting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021199303.8U CN212777400U (en) | 2020-06-24 | 2020-06-24 | Yellow phosphorus-burning tail gas boiler with hot air combustion supporting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212777400U true CN212777400U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021199303.8U Active CN212777400U (en) | 2020-06-24 | 2020-06-24 | Yellow phosphorus-burning tail gas boiler with hot air combustion supporting function |
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| Country | Link |
|---|---|
| CN (1) | CN212777400U (en) |
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2020
- 2020-06-24 CN CN202021199303.8U patent/CN212777400U/en active Active
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