Dual-fuel combustion heat supply system
By designing a dual-fuel combustion heating system that combines natural gas and biomass combustion furnaces, flexible fuel heating for spray drying towers has been achieved, solving the problem that spray drying tower equipment can only use a single fuel, thus improving the applicability of the equipment and reducing costs.
Patent Information
- Application Number
- CN202423239765.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing spray drying tower equipment can only be equipped with one type of combustion furnace and cannot use natural gas and biomass fuels at the same time, resulting in poor applicability and high cost.
A dual-fuel combustion heating system was designed, combining a natural gas combustion furnace and a biomass combustion furnace. Through structures such as cyclone separators, dust collectors, and dust hoppers, multiple separations of hot air are achieved, enabling the use of two fuels for heating.
A single system enables flexible switching between natural gas and biomass fuels, reducing costs, improving hot air quality, and enhancing applicability and ease of use.
Smart Images
Figure CN223595898U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of heating equipment, and particularly relates to a dual-fuel combustion heating system. BACKGROUND
[0002] The spray drying tower is one of the essential equipment in the process of ceramic tile production. Its working principle is that hot air enters from the top of the spray drying tower, and slurry is sprayed from the bottom of the spray drying tower. The slurry contacts the hot air and is dried into powder in a short time. The powder product is discharged from the bottom of the spray drying tower, and the waste gas generated in the spray drying tower is exhausted by the induced draft fan.
[0003] The existing hot air is generally formed by burning natural gas in a combustion furnace. Currently, there are also ways of burning biomass to form hot air for the spray drying tower.
[0004] However, the existing spray drying tower is generally only matched with one type of combustion furnace, that is, either a combustion furnace for burning natural gas or a combustion furnace for burning biomass. If the user utilizes two types of fuel in the production process, two sets of spray drying tower equipment and two sets of combustion furnaces need to be purchased to achieve the purpose, which has the defects of poor applicability and high cost. TECHNICAL FIELD
[0005] The utility model aims at providing a dual-fuel combustion heating system to solve the problems in the background art.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0007] A dual-fuel combustion heating system for providing hot air to a spray drying tower, the dual-fuel combustion heating system comprising an air extraction device, a natural gas combustion furnace, a biomass combustion furnace, a cyclone separation pipeline and a dust collector, the natural gas combustion furnace being connected to the spray drying tower, the biomass combustion furnace being connected to the dust collector, the dust collector being connected to the cyclone separation pipeline, the cyclone separation pipeline being connected to the natural gas combustion furnace, and the suction port of the air extraction device extending into the spray drying tower.
[0008] In some embodiments, the dual-fuel combustion heating system further comprises a heating pipeline and a connecting pipeline, the first end of the heating pipeline being connected to the spray drying tower, the second end of the heating pipeline being connected to the first end of the connecting pipeline, and the second end of the connecting pipeline extending into the natural gas combustion furnace.
[0009] In some embodiments, the dual-fuel combustion heating system further comprises a fixing bracket, one end of the fixing bracket being connected to the outer wall of the connecting pipeline, and the other end of the fixing bracket being connected to the inner wall of the natural gas combustion furnace.
[0010] In some embodiments, the top of the natural gas combustion furnace is formed with a cyclone separation section and a flared section, the gas outlet end of the cyclone separation pipe is communicated with the cyclone separation section, and the lower end of the connecting pipe is located in the flared section.
[0011] In some embodiments, the cyclone separation pipe is annularly mounted on the outer wall of the corresponding natural gas combustion furnace of the cyclone separation section.
[0012] In some embodiments, the air suction device comprises a fan and a suction pipe, one end of the suction pipe is connected with the fan, the other end of the suction pipe extends into the spray drying tower, and the end of the suction pipe extending into the spray drying tower is formed with a suction port.
[0013] In some embodiments, the top of the spray drying tower is provided with an air distributor, and the air distributor is connected with the heat supply pipe.
[0014] In some embodiments, the top end of the dust collector is communicated with the gas inlet end of the cyclone separation pipe, the gas outlet of the biomass combustion furnace is communicated with the dust collector, and the connection is close to the bottom end.
[0015] In some embodiments, the dual-fuel combustion heat supply system further comprises a dust falling hopper, the top end of the dust falling hopper is communicated with the cyclone separation pipe and located between the dust collector and the natural gas combustion furnace.
[0016] In some embodiments, the dual-fuel combustion heat supply system further comprises a collecting hopper, the bottom ends of the dust falling hopper, the natural gas combustion furnace and the dust collector all extend into the collecting hopper through pipes. In this way, the collecting hopper can play a role in collecting waste, and can inject liquid such as water according to actual needs to form a water seal structure and improve the sealing performance.
[0017] The beneficial effects of the utility model are as follows:
[0018] 1. The utility model provides a novel structure's dual-fuel combustion heat supply system, it is used for providing hot air for spray drying tower, this heat supply system has combined natural gas combustion furnace and biomass combustion furnace, and the user can select natural gas or biomass to burn and prepare hot air according to actual needs, and the combustion heat supply work of the above two kinds of fuels can be completed through a set of equipment, not only effectively saves the cost, and strong applicability, convenient to use.
[0019] 2. The heat supply system is provided with a dust collector, cyclone separation, dust falling hopper and multiple separation structures, when biomass is used as fuel, the sundries in the hot air can be better separated out, and the quality of the hot air entering the spray drying tower can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a simplified structure diagram of the utility model as a whole.
[0021] Figure 2 A-A direction of the simplified cross-sectional structure perspective view shown in figure. Figure 1 A-A direction of the simplified cross-sectional structure perspective view shown in figure.
[0022] Figure 3 A simplified structure schematic diagram of the natural gas combustion furnace of the utility model.
[0023] Figure 4 A system framework diagram of the utility model as a whole.
[0024] In the figure: 1-natural gas combustion furnace;1a-cyclone separation section;1b-flared section;1c-intermediate section;1d-tail end collection section;2-biomass combustion furnace;3-cyclone separation pipeline;4-dust collector;5-heating pipeline;6-connection pipeline;7-fixed support;8-dust fall hopper;9-collection hopper;10-exhaust equipment;11-spray drying tower;101-fan;102-suction pipeline;103-suction port;111-air distributor;112-lance. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0026] Please refer to Figures 1-4 The utility model provides the following technical scheme:
[0027] A dual-fuel combustion heat supply system for providing hot air to a spray drying tower 11, the dual-fuel combustion heat supply system comprising exhaust equipment 10, a natural gas combustion furnace 1, a biomass combustion furnace 2, a cyclone separation pipeline 3 and a dust collector 4, the natural gas combustion furnace 1 being connected to the spray drying tower 11, the biomass combustion furnace 2 being connected to the dust collector 4, the dust collector 4 being connected to the cyclone separation pipeline 3, the cyclone separation pipeline 3 being connected to the natural gas combustion furnace 1, and a suction port 103 of the exhaust equipment 10 extending into the spray drying tower 11.
[0028] The dual-fuel combustion heat supply system further comprises a heating pipeline 5 and a connection pipeline 6, a first end of the heating pipeline 5 being connected to the spray drying tower 11, a second end of the heating pipeline 5 being connected to a first end of the connection pipeline 6 via a connecting piece such as a high-temperature-resistant flange, and a second end of the connection pipeline 6 extending into the natural gas combustion furnace 1.
[0029] The dual-fuel combustion heat supply system further comprises a fixed support 7, one end of the fixed support 7 being connected to an outer wall of the connection pipeline 6, and the other end of the fixed support 7 being connected to an inner wall of the natural gas combustion furnace 1. The fixed support 7 is preferably a high-temperature-resistant steel pipe.
[0030] The natural gas combustion furnace 1 is sequentially formed with a cyclone separation section 1a, an expansion section 1b, an intermediate section 1c and a tail end collection section 1d from top to bottom, the gas outlet end of the cyclone separation pipeline 3 is communicated with the cyclone separation section 1a, and the lower end of the connecting pipeline 6 is located in the expansion section 1b.
[0031] The cyclone separation pipeline 3 is annularly installed on the outer wall of the natural gas combustion furnace 1 corresponding to the cyclone separation section 1a.
[0032] The air draft equipment 10 includes a fan 101 and a suction pipeline 102, one end of the suction pipeline 102 is connected with the fan 101, the other end of the suction pipeline 102 extends into the spray drying tower 11, and the end of the suction pipeline 102 extending into the spray drying tower 11 is formed with a suction port 103.
[0033] The top of the spray drying tower 11 is provided with an air distributor 111, and the air distributor 111 is connected with the heat supply pipeline 5.
[0034] The dust collector 4 of the embodiment is vertically arranged, the top end of the dust collector 4 is communicated with the gas inlet end of the cyclone separation pipeline 3, and the gas outlet of the biomass combustion furnace 2 is communicated with the dust collector 4 and the connecting position is close to the bottom end.
[0035] The dual-fuel combustion heat supply system further includes a dust falling hopper 8, the top end of the dust falling hopper 8 is communicated with the cyclone separation pipeline 3 and located between the dust collector 4 and the natural gas combustion furnace 1. The upper end of the dust falling hopper 8 is in a trumpet shape, the airflow is decelerated again, a certain separation effect is achieved, and the high-temperature gas is separated once more before entering the natural gas combustion furnace 1.
[0036] The dual-fuel combustion heat supply system further includes a collection hopper 9, the bottom ends of the dust falling hopper 8, the natural gas combustion furnace 1 and the dust collector 4 are extended into the collection hopper 9 through pipelines. Therefore, the collection hopper 9 can play a role in collecting waste, and can inject liquid such as water according to actual needs to form a water seal structure, improve the sealing performance and prevent dust raising.
[0037] The working principle of the dual-fuel combustion heat supply system of the embodiment is as follows:
[0038] When the biomass is used as the fuel, the natural gas combustion furnace 1 is equivalent to a cyclone separator, the fan 101 works to generate a suction air duct, the biomass combustion furnace 2 burns the high-temperature gas generated by the biomass to enter the dust collector 4 to be separated firstly, then enters the dust falling hopper 8 to be separated secondly, and then enters the natural gas combustion furnace 1 through the cyclone separation pipeline 3, in the natural gas combustion furnace, the high-temperature gas entering from the cyclone separation pipeline 3 is firstly centrifuged (i.e. separated thirdly) in the cyclone separation section 1a, and the inner diameter of the flared section 1b is increased to slow down, at this time, the separation effect is the best, most of the particulate matters are separated and enter the bottom of the natural gas combustion furnace 1, and the high-temperature gas separated from the particulate matters enters the heating pipeline 5 from the connecting pipeline 6, and then is branched to the spray drying tower 11 under the action of the air distributor 111, the hot air is mixed with the slurry sprayed by the spray gun 112 of the spray drying tower 11 to dry the slurry and obtain the powder particles.
[0039] When the biomass is used as the fuel, the biomass combustion furnace 2, the cyclone separation pipeline 3, the dust falling hopper 8 and the dust collector 4 do not work, the hot air generated by burning the natural gas in the natural gas combustion furnace 1 directly enters the heating pipeline 5 from the connecting pipeline 6, and then is branched to the spray drying tower 11 under the action of the air distributor 111. The natural gas combustion does not need to apply the separation structure because the natural gas combustion is directly heating the air and will not produce the solid impurities.
[0040] The double-fuel combustion heating system of the utility model is equivalent to the prior art and has at least the following advantages:
[0041] 1. The double-fuel combustion heating system of the utility model provides hot air for the spray drying tower 11, the heating system combines the natural gas combustion furnace 1 and the biomass combustion furnace 2, the user can select the natural gas or the biomass to burn to prepare the hot air according to the actual needs, the above work can be completed through one set of equipment, the cost is effectively saved, the applicability is strong, and the use is convenient.
[0042] 2. The heating system is provided with multiple separation structures such as the dust collector 4, the cyclone separation and the dust falling hopper 8, when the biomass is used as the fuel, the impurities in the hot air can be better separated out, and the quality of the hot air entering the spray drying tower 11 can be effectively improved.
[0043] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A dual-fuel combustion heating system for supplying hot air to a spray drying tower (11), characterized in that, The dual-fuel combustion heating system includes an exhaust device (10), a natural gas combustion furnace (1), a biomass combustion furnace (2), a cyclone separator pipe (3), and a dust collector (4). The natural gas combustion furnace (1) is connected to the spray drying tower (11), the biomass combustion furnace (2) is connected to the dust collector (4), the dust collector (4) is connected to the cyclone separator pipe (3), and the cyclone separator pipe (3) is connected to the natural gas combustion furnace (1). The suction port (103) of the exhaust device (10) extends into the spray drying tower (11).
2. The dual-fuel combustion heating system according to claim 1, characterized in that, It also includes a heating pipe (5) and a connecting pipe (6), the first end of which is connected to the spray drying tower (11), and the second end of which is connected to the first end of the connecting pipe (6), the second end of which extends into the natural gas combustion furnace (1).
3. The dual-fuel combustion heating system according to claim 2, characterized in that, It also includes a fixed bracket (7), one end of which is connected to the outer wall of the connecting pipe (6), and the other end is connected to the inner wall of the natural gas combustion furnace (1).
4. The dual-fuel combustion heating system according to claim 2, characterized in that, The top of the natural gas combustion furnace (1) has a cyclone separation section (1a) and a flared section (1b). The outlet end of the cyclone separation pipe (3) is connected to the cyclone separation section (1a), and the lower port of the connecting pipe (6) is located inside the flared section (1b).
5. The dual-fuel combustion heating system according to claim 4, characterized in that, The cyclone separation pipe (3) is installed in a ring around the outer wall of the natural gas combustion furnace (1) corresponding to the cyclone separation section (1a).
6. The dual-fuel combustion heating system according to any one of claims 1-5, characterized in that, The exhaust device (10) includes a fan (101) and an exhaust pipe (102). One end of the exhaust pipe (102) is connected to the fan (101), and the other end extends into the spray drying tower (11). An exhaust port (103) is formed at the end of the exhaust pipe (102) that extends into the spray drying tower (11).
7. The dual-fuel combustion heating system according to any one of claims 2-5, characterized in that, The top of the spray drying tower (11) is provided with an air distributor (111), which is connected to the heating pipe (5).
8. The dual-fuel combustion heating system according to any one of claims 2-5, characterized in that, The top of the dust collector (4) is connected to the air inlet of the cyclone separator (3), and the air outlet of the biomass combustion furnace (2) is connected to the dust collector (4) with the connection point close to the bottom.
9. The dual-fuel combustion heating system according to any one of claims 2-5, characterized in that, It also includes a dust settling hopper (8), the top of which is connected to the cyclone separator pipe (3) and located between the dust collector (4) and the natural gas combustion furnace (1).
10. The dual-fuel combustion heating system according to claim 9, characterized in that, It also includes a collection hopper (9), the bottom ends of the dust hopper (8), the natural gas combustion furnace (1) and the dust collector (4) are all extended into the collection hopper (9) through pipes.