Industrial furnace for producing natural gas in salt chemical industry

Abstract

The utility model relates to the technical field of natural gas industrial furnaces, in particular to a salt chemical production natural gas industrial furnace. According to the technical scheme, the device comprises a combustion base, a heating furnace and a preheating sleeve, a combustion chamber is arranged in the combustion base, the heating furnace is fixedly installed on the upper surface of the combustion base, a spiral heat exchange pipe is fixedly connected to one side of the upper surface of the heating furnace, and a liquid inlet pipe is fixedly connected to the tail end of the spiral heat exchange pipe; a preheating sleeve is fixedly installed on the upper surface of the heating furnace, the spiral heat exchange pipe is located in the preheating sleeve, an exhaust pipe is fixedly connected to the outer surface of the combustion base, the tail end of the exhaust pipe is fixedly connected to the position, close to the lower surface, of the outer surface of the preheating sleeve, and a liquid outlet valve is fixedly connected to the position, close to the lower surface, of the outer surface of the heating furnace. According to the utility model, heat in tail gas discharged during combustion of the natural gas industrial furnace can be recovered so as to preheat raw materials, so that the heating efficiency of the raw materials is improved, and meanwhile, energy conservation and environmental protection are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of natural gas industrial furnace technology, specifically a natural gas industrial furnace for salt chemical production. Background Technology

[0002] In salt chemical production, heating furnaces using natural gas as the main fuel are primarily used for heating processes to accelerate reactions and evaporation, thereby improving production efficiency and product quality. Furthermore, as a clean energy source, natural gas produces very few pollutants during combustion. Compared to traditional energy sources like coal, the combustion of natural gas significantly reduces harmful gases such as carbon dioxide, sulfur oxides, and nitrogen oxides, helping to minimize environmental impact and achieve green production. Additionally, natural gas has a high calorific value, releasing a large amount of heat energy during combustion, resulting in higher thermal efficiency and faster heating speeds, thus improving production efficiency.

[0003] Currently, the natural gas industrial furnaces used in salt chemical production produce exhaust gases containing a large amount of heat during operation. Directly discharging these exhaust gases would result in a significant waste of heat, which is detrimental to energy conservation and environmental protection. Therefore, we propose a natural gas industrial furnace for salt chemical production. Utility Model Content

[0004] The purpose of this utility model is to provide a natural gas industrial furnace for salt chemical production, which can recover the heat from the exhaust gas emitted during the combustion of natural gas in the industrial furnace to preheat the raw materials, thereby improving the heating efficiency of the raw materials. At the same time, it has the advantages of energy saving and environmental protection. It solves the problem that the exhaust gas emitted after the combustion of natural gas in the current natural gas industrial furnace used in salt chemical production contains a large amount of heat, and directly emitting the exhaust gas would cause a large amount of heat waste, which is not conducive to energy saving and environmental protection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an industrial furnace for producing natural gas in salt chemical industry, comprising a combustion seat, a heating furnace, and a preheating sleeve. A combustion chamber is provided inside the combustion seat. The heating furnace is fixedly installed on the upper surface of the combustion seat. A spiral heat exchange tube is fixedly connected to one side of the upper surface of the heating furnace, and an inlet pipe is fixedly connected to the end of the spiral heat exchange tube. The preheating sleeve is fixedly installed on the upper surface of the heating furnace, and the spiral heat exchange tube is located inside the preheating sleeve. An exhaust pipe is fixedly connected to the outer surface of the combustion seat, and the end of the exhaust pipe is fixedly connected to the outer surface of the preheating sleeve near the lower surface. A liquid outlet valve is fixedly connected to the outer surface of the heating furnace near the lower surface.

[0006] Preferably, an annular tube is fixedly sleeved on the outer surface of the combustion seat, a gas pipe is fixedly connected to the outer surface of the annular tube, and a number of connecting pipes are fixedly connected in an annular array at equal intervals on the outer surface of the annular tube, and the connecting pipes penetrate the combustion seat. Each connecting pipe has a burner nozzle fixedly connected to one end inside the combustion chamber.

[0007] Preferably, an air outlet pipe is fixedly connected to the upper surface of the preheating sleeve.

[0008] Preferably, a central column is fixedly installed inside the preheating sleeve.

[0009] Preferably, a geared motor is fixedly installed on the upper surface of the heating furnace, and a stirring paddle is fixedly connected to the end of the output shaft of the geared motor, with the stirring paddle located inside the heating furnace.

[0010] Preferably, a fixing seat is fixedly installed on the lower surface of the heating furnace, and a plurality of fixing holes are evenly spaced in a ring array on the upper surface of the fixing seat.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by setting up a combustion seat, heating furnace, combustion chamber, connecting pipe, preheating sleeve, spiral heat exchanger, liquid inlet pipe, and liquid outlet valve, achieves the ability to recover the heat from the exhaust gas emitted during the combustion of natural gas in an industrial furnace, so as to preheat the raw materials, thereby improving the heating efficiency of the raw materials and contributing to energy conservation and environmental protection. The liquid raw materials to be heated in salt chemical production enter the heating furnace through the liquid inlet pipe. After the natural gas is burned inside the combustion chamber, it heats the raw materials inside the heating furnace. The combustion exhaust gas inside the combustion chamber enters the preheating sleeve through the exhaust pipe and exchanges heat with the raw materials inside the spiral heat exchanger, thus enabling the recovery and utilization of the heat in the exhaust gas and preheating the raw materials before they enter the heating furnace.

[0013] 2. This utility model improves the heating efficiency of raw materials inside the heating furnace by setting a geared motor and a stirring paddle. The geared motor drives the stirring paddle to rotate, and the stirring paddle stirs the raw materials inside the heating furnace so that the raw materials inside the heating furnace are heated evenly.

[0014] 3. By setting a central column, the spiral heat exchange tube is located in the gap between the central column and the preheating sleeve. After the exhaust gas enters the preheating sleeve, it flows in the gap and makes full contact with the preheating sleeve, thereby improving the heat exchange efficiency between the exhaust gas and the raw materials inside the spiral heat exchange tube. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial three-dimensional structural diagram of the heating furnace of this utility model;

[0017] Figure 3 This is a partial three-dimensional structural diagram of the combustion seat of this utility model;

[0018] Figure 4 This is a partial three-dimensional structural diagram of the preheating sleeve of this utility model.

[0019] Reference numerals: 1. Combustion seat; 2. Annular tube; 3. Heating furnace; 4. Exhaust pipe; 5. Preheating sleeve; 6. Liquid inlet pipe; 7. Gas outlet pipe; 8. Gear motor; 9. Liquid outlet valve; 10. Gas pipe; 11. Fixing base; 12. Fixing hole; 13. Stirring paddle; 14. Spiral heat exchange tube; 15. Connecting pipe; 16. Combustion nozzle; 17. Combustion chamber; 18. Central column Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example 1

[0021] like Figures 1-4 As shown, the present invention proposes a natural gas industrial furnace for salt chemical production, comprising a combustion seat 1, a heating furnace 3, and a preheating sleeve 5. The combustion seat 1 has a combustion chamber 17 inside, and an annular pipe 2 is fixedly sleeved on the outer surface of the combustion seat 1. A gas pipe 10 is fixedly connected to the outer surface of the annular pipe 2. Several connecting pipes 15 are fixedly connected in an annular array at equal intervals on the outer surface of the annular pipe 2, and the connecting pipes 15 penetrate the combustion seat 1. Each connecting pipe 15 is fixedly connected to a burner nozzle 16 at one end inside the combustion chamber 17. Natural gas enters the annular pipe 2, the connecting pipes 15, and the burner nozzle 16 through the gas pipe 10, and then burns through the burner nozzle 16. The heating furnace 3 is fixedly installed on the upper surface of the combustion seat 1. When the natural gas burns through the burner nozzle 16, it heats the bottom of the heating furnace 3. A spiral heat exchange tube 14 is fixedly connected to one side of the upper surface of the heating furnace 3, and a liquid inlet pipe 6 is fixedly connected to the end of the spiral heat exchange tube 14.

[0022] Raw materials for salt chemical production are added into the heating furnace 3 through the liquid inlet pipe 6. A preheating sleeve 5 is fixedly installed on the upper surface of the heating furnace 3, and a spiral heat exchange tube 14 is located inside the preheating sleeve 5. A central column 18 is fixedly installed inside the preheating sleeve 5. The spiral heat exchange tube 14 is located in the gap between the central column 18 and the preheating sleeve 5. After the exhaust gas enters the preheating sleeve 5, it flows in the gap and makes full contact with the preheating sleeve 5, thereby improving the heat exchange efficiency between the exhaust gas and the raw materials inside the spiral heat exchange tube 14. An exhaust pipe 7 is fixedly connected to the upper surface of the preheating sleeve 5. An exhaust pipe 4 is fixedly connected to the outer surface of the combustion seat 1, and the end of the exhaust pipe 4 is fixedly connected to the outer surface of the preheating sleeve 5 near the lower surface. A liquid outlet valve 9 is fixedly connected to the outer surface of the heating furnace 3 near the lower surface.

[0023] In use, the liquid raw materials required for heating in salt chemical production enter the heating furnace 3 through the liquid inlet pipe 6. Natural gas enters the annular pipe 2, connecting pipe 15 and burner 16 through the gas pipe 10, and then burns in the combustion chamber 17 through the burner 16, heating the bottom of the heating furnace 3. The combustion exhaust gas in the combustion chamber 17 enters the preheating sleeve 5 through the exhaust pipe 4, and exchanges heat with the raw materials in the spiral heat exchange tube 14. This allows the heat in the exhaust gas to be recovered and utilized, and at the same time, the raw materials before entering the heating furnace 3 are preheated. The heated raw materials are discharged through the liquid outlet valve 9. Example 2

[0024] like Figure 1 and Figure 2 As shown, the present invention proposes a natural gas industrial furnace for salt chemical production. Compared with the first embodiment, this embodiment also includes a geared motor 8 fixedly installed on the upper surface of the heating furnace 3. The output shaft of the geared motor 8 is fixedly connected to a stirring paddle 13, and the stirring paddle 13 is located inside the heating furnace 3. A fixing seat 11 is fixedly installed on the lower surface of the heating furnace 3. The upper surface of the fixing seat 11 is provided with a plurality of fixing holes 12 arranged in a ring array at equal intervals.

[0025] In this embodiment, the geared motor 8 drives the stirring paddle 13 to rotate, and the stirring paddle 13 stirs the raw materials inside the heating furnace 3 so that the raw materials inside the heating furnace 3 are heated evenly, thereby improving the heating efficiency of the raw materials inside the heating furnace 3.

[0026] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A natural gas industrial furnace for salt chemical production, comprising a combustion chamber (1), a heating furnace (3), and a preheating jacket (5), characterized in that: The combustion seat (1) is provided with a combustion chamber (17) inside. A heating furnace (3) is fixedly installed on the upper surface of the combustion seat (1). A spiral heat exchange tube (14) is fixedly connected to one side of the upper surface of the heating furnace (3), and an inlet pipe (6) is fixedly connected to the end of the spiral heat exchange tube (14). A preheating sleeve (5) is fixedly installed on the upper surface of the heating furnace (3), and the spiral heat exchange tube (14) is located inside the preheating sleeve (5). An exhaust pipe (4) is fixedly connected to the outer surface of the combustion seat (1), and the end of the exhaust pipe (4) is fixedly connected to the position of the outer surface of the preheating sleeve (5) near the lower surface. An outlet valve (9) is fixedly connected to the position of the outer surface of the heating furnace (3) near the lower surface.

2. The industrial furnace for producing natural gas in a salt chemical industry according to claim 1, characterized in that: The outer surface of the combustion seat (1) is fixedly fitted with an annular tube (2), and the outer surface of the annular tube (2) is fixedly connected with a gas pipe (10). The outer surface of the annular tube (2) is fixedly connected with several connecting pipes (15) in an annular array at equal intervals, and the connecting pipes (15) penetrate the combustion seat (1). Each connecting pipe (15) is fixedly connected to a burner nozzle (16) at one end inside the combustion chamber (17).

3. The industrial furnace for producing natural gas in a salt chemical industry according to claim 1, characterized in that: An air outlet pipe (7) is fixedly connected to the upper surface of the preheating sleeve (5).

4. The industrial furnace for producing natural gas in a salt chemical industry according to claim 1, characterized in that: A central column (18) is fixedly installed inside the preheating sleeve (5).

5. The industrial furnace for producing natural gas in a salt chemical industry according to claim 1, characterized in that: A geared motor (8) is fixedly installed on the upper surface of the heating furnace (3). A stirring paddle (13) is fixedly connected to the end of the output shaft of the geared motor (8), and the stirring paddle (13) is located inside the heating furnace (3).

6. The industrial furnace for producing natural gas in a salt chemical industry according to claim 1, characterized in that: The lower surface of the heating furnace (3) is fixedly installed with a fixing seat (11), and the upper surface of the fixing seat (11) is provided with a number of fixing holes (12) arranged in a ring array at equal intervals.

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