Steam generator

Abstract

The utility model provides a steam generator, which is used for preparing steam and comprises an evaporation pipe, a heat exchanger and a heat exchanger, the first heating pipe is arranged in the evaporation pipe, the first heating pipe and the evaporation pipe are mutually separated, the steam generator is provided with a fuel area, and the first heating pipe is communicated with the fuel area so that the first heating pipe can heat a solution in the evaporation pipe; the second heating pipe is wound outside the evaporation pipe and used for heating the evaporation pipe, the first heating pipe is arranged in the evaporation pipe and communicated with the fuel area, high-temperature smoke can be generated after fuel in the fuel area is combusted, and the smoke heats a solution and steam in the evaporation pipe through the first heating pipe. The second heating pipe is wound outside the evaporation pipe to heat the solution in the evaporation pipe, the first heating pipe and the second heating pipe are matched with each other, the temperature difference of the solutions at different positions is reduced, and the heating effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical instruments, in particular to a steam generator. Background Art

[0002] As the limitations of conventional energy sources become increasingly apparent, the world faces the dual challenges of resource scarcity and environmental pollution. Energy conservation and environmental protection have become a focus of attention, and the active exploration of new energy sources is of great significance to our times. Hydrogen, which produces only water after complete combustion, is an ideal clean energy source and is currently widely used in the chemical, pharmaceutical, metallurgical, and food processing industries.

[0003] There are many ways to produce hydrogen, but methanol-based hydrogen production has become a top choice in many fields due to its wide raw material supply, low operating costs, and distributed layout. The steam generator, a core component of a methanol-based hydrogen production system, uses catalytic combustion for heating in the tube side. This results in a large temperature difference between the shell and tube sides, resulting in poor heating performance. Therefore, a steam generator that can address this issue is highly desirable. Utility Model Content

[0004] Therefore, the utility model provides a steam generator to solve the problem of poor heating effect of the steam generator.

[0005] To solve the above problems, the utility model provides a steam generator, which is used to prepare steam. The steam generator includes: an evaporation tube, in which a solution is stored; a first heating tube, which is arranged in the evaporation tube and is separated from the evaporation tube. The steam generator is provided with a fuel area, and the first heating tube is connected to the fuel area so that the first heating tube heats the evaporation tube; and a second heating tube, which is wrapped around the outside of the evaporation tube and is used to heat the evaporation tube.

[0006] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: the steam generator is provided with an evaporation tube, the first heating tube is arranged in the evaporation tube, the first heating tube is connected to the fuel area, and after the fuel in the fuel area is burned, high-temperature flue gas is generated. The flue gas passes through the first heating tube to heat the solution and steam in the evaporation tube. The second heating tube is wrapped around the outside of the evaporation tube to heat the solution in the evaporation tube. The first heating tube and the second heating tube cooperate with each other to reduce the temperature difference of the solution at different positions and improve the heating effect.

[0007] Furthermore, the evaporation tube further comprises: an expansion portion, which is provided at an end of the evaporation tube away from the fuel inlet.

[0008] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: an expansion part is provided on the evaporator tube. When there is too much steam inside the evaporator tube, the expansion part can expand, thereby reducing the pressure difference between the evaporator tube and the room, preventing the steam generator from cracking, and improving the service life and safety of the steam generator.

[0009] Furthermore, the evaporation tube further comprises: a liquid inlet area, which is communicated with the evaporation tube so that the solution flows into the evaporation tube through the liquid inlet area.

[0010] Compared with the existing technology, the technical effect achieved by adopting this technical solution is that the evaporation tube is connected with the liquid inlet area, so that the solution flows into the evaporation tube through the liquid inlet area for heating.

[0011] Furthermore, the steam generator further includes: a heating part, which is arranged outside the liquid inlet area so that the heating part heats the solution in the liquid inlet area.

[0012] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the heating part is arranged outside the liquid inlet area, heats the solution in the liquid inlet area, and increases the temperature of the solution.

[0013] Furthermore, the liquid inlet area further includes: a baffle, which is vertically arranged inside the liquid inlet area.

[0014] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the liquid inlet area is provided with a baffle, and the baffle is arranged in the vertical direction, which increases the time that the solution stays in the liquid inlet area and makes the heating effect of the heating part better.

[0015] Furthermore, the liquid inlet area is provided with a liquid inlet, so that the solution flows into the liquid inlet area through the liquid inlet.

[0016] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the liquid inlet area is provided with a liquid inlet, which makes it convenient for operators to replenish solution into the liquid inlet area, and the method of replenishing solution is simpler and more convenient.

[0017] Furthermore, the steam generator further includes: a steam outlet, which is provided on the steam generator and communicates with the evaporation tube.

[0018] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the steam generator is provided with a steam outlet, the operator collects the steam evaporated by the solution at the steam outlet, and the steam outlet is connected to the evaporation tube, so that the steam in the evaporation tube can flow to the steam outlet.

[0019] Furthermore, the steam generator further comprises: a flue gas outlet, which is arranged at one end of the steam generator away from the fuel zone.

[0020] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the steam generator is provided with a flue gas outlet, and the steam generator adopts a fuel combustion heating method. After the fuel is burned, a large amount of flue gas will be generated, and the flue gas will be discharged through the flue gas outlet. The operator collects the discharged flue gas at the flue gas outlet to avoid polluting the environment.

[0021] Furthermore, the steam generator further includes: a fuel inlet, which is connected to the fuel zone.

[0022] Compared with the existing technology, the technical effect achieved by adopting this technical solution is that the fuel inlet is connected to the fuel area, so that the operator can add fuel to the fuel area through the fuel inlet, and the operation is more convenient.

[0023] After adopting the technical solution of the utility model, the following technical effects can be achieved:

[0024] (1) The steam generator is provided with an evaporation tube. The first heating tube is provided in the evaporation tube. The first heating tube is connected to the fuel zone. After the fuel in the fuel zone is burned, high-temperature flue gas is generated. The flue gas passes through the first heating tube and heats the solution and steam in the evaporation tube. The second heating tube is wrapped around the outside of the evaporation tube and also heats the solution in the evaporation tube. The first heating tube and the second heating tube cooperate with each other to reduce the temperature difference of the solution at different positions and improve the heating effect.

[0025] (2) An expansion part is provided on the evaporator tube. When there is too much steam inside the evaporator tube, the expansion part can expand, reducing the pressure difference between the evaporator tube and the room, preventing the steam generator from cracking, and improving the service life and safety of the steam generator;

[0026] (3) The liquid inlet area is provided with a baffle, which is arranged in the vertical direction, which increases the time the solution stays in the liquid inlet area and makes the heating effect of the heating part better. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a steam generator provided in an embodiment of the present utility model;

[0028] Figure 2 This is a second structural schematic diagram of the steam generator.

[0029] Description of reference numerals:

[0030] 100: steam generator; 101: fuel area; 102: steam outlet; 103: flue gas outlet; 104: fuel inlet; 110: evaporation tube; 111: expansion section; 112: liquid inlet area; 112a: baffle; 112b: liquid inlet; 120: first heating tube; 130: second heating tube; 140: heating section. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] An embodiment of the present invention provides a steam generator 100, which is used to prepare steam. The steam generator 100 includes: an evaporation tube 110, a first heating tube 120, and a second heating tube 130. The evaporation tube 110 contains a solution, the first heating tube 120 is arranged in the evaporation tube 110, and the first heating tube 120 and the evaporation tube 110 are separated from each other. The steam generator 100 is provided with a fuel area 101, and the first heating tube 120 is connected to the fuel area 101 so that the first heating tube 120 heats the solution in the evaporation tube 110; the second heating tube 130 is wound around the outside of the evaporation tube 110 and is used to heat the evaporation tube 110.

[0033] Specifically, as attached Figure 1 As shown, the present invention provides a steam generator 100, wherein the second heating tube 130 is wound around the outside of the evaporation tube 110. The second heating tube 130 is an electric heating tube. When the second heating tube 130 is powered on, the evaporation tube 110 can be heated. Figure 2 As shown, the first heating tube 120 is arranged inside the evaporator tube 110, and there are multiple first heating tubes 120. The first heating tube 120 is separated from the evaporator tube 110, and the first heating tube 120 is connected to the fuel area 101. The fuel burns in the fuel area 101 to generate high-temperature flue gas. The flue gas flows in the first heating tube 120, so that the first heating tube 120 heats the solution and steam in the evaporator tube 110 and increases the temperature of the solution and steam in the evaporator tube 110. The steam generator 100 provided in the present application adopts two heating methods for heating, which improves the heating effect and avoids the situation where the temperature difference between the inside and outside of the evaporator tube 110 is large. At the same time, when a failure occurs in one of the first heating tube 120 or the second heating tube 130, the steam generator 100 can continue to operate, thereby ensuring production efficiency.

[0034] For example, the evaporation tube 110 further includes an expansion portion 111 , which is disposed at an end of the evaporation tube 110 away from the fuel region 101 .

[0035] For example, as shown in the attached Figure 1As shown, the evaporator tube 110 is provided with an expansion portion 111. When there is too much steam inside the evaporator tube 110, the expansion portion 111 can extend, reducing the pressure difference between the evaporator tube 110 and the room, preventing the steam generator 100 from cracking, and improving the service life and safety of the steam generator 100. The expansion portion 111 is provided at the end of the evaporator tube 110 away from the fuel area 101. The steam in the evaporator tube 110 moves toward the end away from the fuel area 101, so the steam will gather at the top of the evaporator tube 110. Therefore, the expansion portion 111 is provided at the end of the evaporator tube 110 away from the fuel area 101, which is convenient for adjusting the air pressure inside the evaporator tube 110 and preventing the evaporator tube 110 from cracking.

[0036] For example, the evaporation tube 110 further includes a liquid inlet area 112 , which is in communication with the evaporation tube 110 , so that the solution flows into the evaporation tube 110 through the liquid inlet area 112 .

[0037] For example, as shown in the attached Figure 2 As shown, the evaporation tube 110 is connected to the liquid inlet area 112, and the solution in the liquid inlet area 112 flows into the evaporation tube 110. The solution is heated and decomposed in the evaporation tube 110, and the structure of the steam generator 100 is more reasonable.

[0038] In addition, at one end of the evaporation tube 110 close to the liquid inlet area 112, there is a methanol aqueous solution, and at the other end of the evaporation tube 110 away from the liquid inlet area 112, there is methanol water vapor. The second heating tube 130 heats the methanol water vapor to promote the evaporation of the methanol water vapor.

[0039] Specifically, the steam generator 100 further includes a heating portion 140 , which is disposed outside the liquid inlet area 112 , so that the heating portion 140 heats the solution in the liquid inlet area 112 .

[0040] Specifically, as attached Figure 1 As shown, the heating portion 140 is disposed outside the liquid inlet area 112 . The heating portion 140 can heat the solution in the liquid inlet area 112 , reduce the temperature difference in the evaporation tube 110 , and promote evaporation of the solution in the evaporation tube 110 .

[0041] For example, the liquid inlet area 112 further includes a baffle 112 a , which is vertically arranged inside the liquid inlet area 112 .

[0042] For example, as shown in the attached Figure 2 As shown, the liquid inlet area 112 is provided with a baffle 112a, which is arranged in a vertical direction, and there are multiple baffles 112a, which increases the time the solution stays in the liquid inlet area 112, so that the heating part 140 heats the liquid inlet area 112 more fully.

[0043] For example, the liquid inlet region 112 is provided with a liquid inlet 112 b so that the solution flows into the liquid inlet region 112 through the liquid inlet 112 b.

[0044] For example, as shown in the attached Figure 1 As shown, the liquid inlet area 112 is provided with a liquid inlet 112b, which is convenient for operators to replenish solution into the liquid inlet area 112, and the method of replenishing solution is simpler and more convenient.

[0045] Specifically, the steam generator 100 further includes a steam outlet 102 . The steam outlet 102 is provided in the steam generator 100 , and the steam outlet 102 is communicated with the evaporation pipe 110 .

[0046] Specifically, as attached Figure 1 As shown, the steam generator 100 is provided with a steam outlet 102 , and the operator collects the steam evaporated from the solution at the steam outlet 102 . The steam outlet 102 is connected to the evaporation tube 110 so that the steam in the evaporation tube 110 can flow to the steam outlet 102 .

[0047] For example, the steam generator 100 further includes a flue gas outlet 103 , which is located at one end of the steam generator 100 away from the fuel zone 101 .

[0048] For example, as shown in the attached Figure 1 As shown, the steam generator 100 is provided with a flue gas outlet 103. The steam generator 100 adopts a fuel combustion heating method. After the fuel is burned, a large amount of flue gas is generated, and the flue gas is discharged through the flue gas outlet 103. The operator collects the discharged flue gas at the flue gas outlet 103 to avoid polluting the environment.

[0049] Specifically, the steam generator 100 further includes a fuel inlet 104 , which is in communication with the fuel region 101 .

[0050] Specifically, as attached Figure 1 As shown, the fuel inlet 104 is in communication with the fuel area 101 , so that an operator can add fuel to the fuel area 101 through the fuel inlet 104 , making the operation more convenient.

[0051] Preferably, as attached Figure 2 As shown, the red arrow indicates the flow direction of the high-temperature flue gas generated after the fuel in the fuel zone 102 is burned, and the green arrow indicates the flow direction of the methanol-water solution in the liquid inlet zone 102 and the methanol-water vapor generated by the heated evaporation of the methanol-water solution in the evaporation tube 110.

[0052] In addition, the fuel enters the fuel zone 101 through the fuel inlet 104 for combustion. After the fuel burns, a large amount of high-temperature flue gas is generated. The high-temperature flue gas flows upward along the first heating tube 120, heats the evaporation tube 110, and is then discharged to the outside of the steam generator from the flue gas outlet 103.

[0053] Supplementary explanation: the methanol aqueous solution flows into the liquid inlet area 102 through the liquid inlet 112b. A baffle 102a is provided inside the liquid inlet area 102. A heating part 140 is provided outside the liquid inlet area 102. The heating part 140 heats the methanol aqueous solution in the liquid inlet area 102. The baffle 102b and the heating part 140 cooperate with each other. The baffle 102b increases the residence time of the methanol aqueous solution in the liquid inlet area 102, so that the heating part 140 fully heats the methanol aqueous solution, thereby improving the heating effect. The heated methanol aqueous solution flows into the evaporation tube 110, and the first heating tube 120 and the second heating tube 130 jointly heat the evaporation tube 110. The temperature of the methanol aqueous solution flowing into the evaporation tube 110 rises rapidly, and the methanol aqueous solution decomposes due to the heat to generate a large amount of methanol water vapor. The methanol water vapor moves upward along the evaporation tube 110, and the operator collects the methanol water vapor at the steam outlet 102.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A steam generator, characterized in that: The steam generator is used to prepare steam, and the steam generator (100) comprises: an evaporation tube (110), wherein a solution is stored in the evaporation tube (110); a first heating tube (120), the first heating tube (120) being arranged in the evaporation tube (110), and the first heating tube (120) and the evaporation tube (110) being separated from each other, the steam generator (100) being provided with a fuel zone (101), the first heating tube (120) being in communication with the fuel zone (101), so that the first heating tube (120) heats the solution in the evaporation tube (110); A second heating tube (130), the second heating tube (130) is wound around the outside of the evaporation tube (110) and is used to heat the evaporation tube (110).

2. The steam generator according to claim 1, characterized in that The evaporation tube (110) further includes: An expansion portion (111), the expansion portion (111) being provided at an end of the evaporation tube (110) away from the fuel zone (101).

3. The steam generator according to claim 1, characterized in that The evaporation tube (110) further includes: A liquid inlet area (112), the liquid inlet area (112) is connected to the evaporation tube (110), so that the solution flows into the evaporation tube (110) through the liquid inlet area (112).

4. The steam generator according to claim 3, characterized in that The steam generator (100) further comprises: A heating portion (140) is provided outside the liquid inlet area (112), so that the heating portion (140) heats the solution in the liquid inlet area (112).

5. The steam generator according to claim 3, characterized in that The liquid inlet area (112) further includes: A baffle (112a), wherein the baffle (112a) is arranged vertically inside the liquid inlet area (112).

6. The steam generator according to claim 5, characterized in that The liquid inlet area (112) is provided with a liquid inlet (112b), so that the solution flows into the liquid inlet area (112) through the liquid inlet (112b).

7. The steam generator according to claim 1, characterized in that The steam generator (100) further comprises: A steam outlet (102) is provided on the steam generator (100), and the steam outlet (102) is in communication with the evaporation tube (110).

8. The steam generator according to claim 1, characterized in that The steam generator (100) further comprises: A flue gas outlet (103) is provided at one end of the steam generator (100) away from the fuel zone (101).

9. The steam generator according to claim 8, characterized in that The steam generator (100) further comprises: A fuel inlet (104) is connected to the fuel zone (101).

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