Staged combustion device

Abstract

The utility model discloses a staged combustion device, which is suitable for a metal surface combustion system in the VOCs (volatile organic compounds) oil gas treatment industry to realize staged control of low-load and high-load combustion power, and comprises an inner ring combustor, an outer ring combustor, a support isolation section, an isolation support plate, a half-moon lifting isolation valve and a Venturi premixing cavity unit, the inner-ring combustor is arranged on the upper side of the Venturi premixing cavity unit, the outer-ring combustor surrounds the outer side of the inner-ring combustor, a supporting isolation section is arranged between the inner ring and the outer ring, an isolation supporting plate is arranged between the outer-ring combustor and the Venturi premixing cavity unit, and the outer ring and the inner-ring combustor are communicated through a half-moon lifting isolation valve. According to the device, the combustion power is automatically adjusted under different load conditions through cooperative work of the inner ring combustor and the outer ring combustor, and energy is saved by more than 50%.

Description

Technical Field

[0001] This utility model relates to a staged combustion device. Background Technology

[0002] Metal surface combustion technology, as a mature VOCs oil and gas treatment solution, is widely used in the petrochemical and chemical industries to meet increasingly stringent environmental emission standards. However, traditional single-stage combustion methods usually require high power, resulting in high energy consumption, especially when treating low-concentration or low-load exhaust gases, where energy saving is not effective. With the advancement of the national "dual carbon" policy, industrial enterprises have an increasing demand for reducing VOCs emission concentrations and achieving energy conservation and emission reduction. How to reduce the operating costs of combustion equipment while meeting environmental protection requirements has become an urgent problem to be solved in the industry.

[0003] Traditional metal surface combustion devices are integrated units without compartments. If combustion performance is considered under conditions of large exhaust gas volume, then traditional combustion devices will waste fuel when the exhaust gas volume is small and the concentration is low.

[0004] Therefore, those skilled in the art need a staged combustion device that can significantly reduce fuel gas consumption without significantly increasing equipment investment. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a staged combustion device. The inner and outer ring burners are combined to achieve staged control of combustion power under low and high loads. The specific solution is as follows:

[0006] A staged combustion device includes an inner ring burner, a supporting isolation section, an outer ring burner, an isolation support plate, a crescent-shaped lifting isolation valve, and a Venturi premixing chamber unit. The inner ring burner is located above the Venturi premixing chamber unit, and the outer ring burner is located around the outer side of the inner ring burner. A supporting isolation section is provided between the inner ring burner and the outer ring burner. An isolation support plate is provided between the outer ring burner and the Venturi premixing chamber unit. The inner ring burner and the outer ring burner are connected by a crescent-shaped lifting isolation valve, which is located on the supporting isolation section.

[0007] Furthermore, the diameter of the outer burner is twice the diameter of the inner burner.

[0008] Furthermore, the crescent-shaped lifting isolation valve is provided in two parts.

[0009] Furthermore, the crescent-shaped lifting isolation valves are respectively located on both sides of the supporting isolation section.

[0010] The crescent-shaped isolation valve is installed on the supporting isolation section and is connected to the inner and outer ring burners, allowing the inner and outer ring cavities to be isolated or connected when needed. The combustion device can flexibly switch operating modes under different load conditions. When the equipment is running at low load, the isolation valve remains closed, and only the inner ring burner works; under high load conditions, the isolation valve opens, and the inner and outer ring burners work simultaneously. This design not only simplifies the equipment structure but also achieves staged combustion control, which helps to significantly reduce fuel gas consumption and meet energy-saving requirements.

[0011] Furthermore, the supporting isolation section is made of high-temperature resistant ceramic or silicate material.

[0012] The support isolation section between the inner and outer burners is made of high-temperature resistant ceramic or silicate material. This material has excellent high-temperature insulation properties and can effectively isolate heat conduction between the inner and outer burners in a high-temperature combustion environment, thereby preventing mutual interference between the two and ensuring the stability of staged combustion. The support isolation section also provides a stable support structure for the inner and outer burners, avoiding deformation or damage caused by high temperature, and improving the durability and stability of the device.

[0013] Furthermore, the diameter of the upper side of the Venturi premixing chamber unit is larger than the diameter of the lower side. This Venturi structure design ensures that the exhaust gas, fuel gas, and air are fully mixed before entering the burner, avoiding problems such as incomplete combustion or low combustion efficiency. This premixing design enables the gas to be uniformly mixed before entering the combustion chamber, meeting the requirements of premixed gas for metal surface combustion, while significantly improving combustion efficiency and reducing exhaust emissions.

[0014] Beneficial effects: By combining the inner and outer burners, flexible switching and power tiered control under load conditions are achieved. Under low load conditions, only the inner burner is activated, thereby achieving lower combustion power and effectively reducing energy consumption. Under high load conditions, the inner and outer burners operate in tandem, providing sufficient combustion power to treat high-concentration, high-flow-rate exhaust gases. This not only meets the combustion requirements under different load conditions but also allows the device to intelligently adjust according to changes in exhaust gas concentration and treatment volume, avoiding energy waste caused by high-load operation of traditional single-stage combustion equipment. Attached Figure Description

[0015] Figure 1 This is a vertical cross-sectional view of a staged combustion device;

[0016] Figure 2 This is a horizontal cross-sectional view of a staged combustion device;

[0017] Figure 3 This is a horizontal cross-sectional view of the location of the isolation support plate in a staged combustion device;

[0018] In the diagram: 1. Inner ring burner, 2. Support isolation section, 3. Outer ring burner, 4. Isolation support plate, 5. Half-moon lifting isolation valve, 6. Venturi premix chamber unit. Detailed Implementation

[0019] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0020] look Figure 1-3 A staged combustion device includes an inner ring burner 1, a support isolation section 2, an outer ring burner 3, an isolation support plate 4, a crescent-shaped lifting isolation valve 5, and a Venturi premixing chamber unit 6. The inner ring burner 1 is located on the upper side of the Venturi premixing chamber unit 6, and the outer ring burner 3 is located around the outer side of the inner ring burner 1. The support isolation section 2 is provided between the inner ring burner and the outer ring burner 3, and the isolation support plate 4 is provided between the outer ring burner 3 and the Venturi premixing chamber unit 6. The inner ring burner 1 and the outer ring burner 3 are connected by the crescent-shaped lifting isolation valve 5, which is located on the support isolation section 2.

[0021] The outer ring burner 3 has a diameter twice that of the inner ring burner 1; there are two crescent-shaped lifting isolation valves 5; the crescent-shaped lifting isolation valves 5 are respectively located on both sides of the supporting isolation section 2; the supporting isolation section 2 is made of high-temperature resistant ceramic or silicate material; the upper diameter of the Venturi premixing chamber unit 6 is larger than the lower diameter.

[0022] Specifically, this device controls the connection and sealing of the isolation section 2 by moving the half-moon lifting isolation valve 5 left and right.

[0023] This device effectively solves the problem of high energy consumption caused by single-stage high-load operation of metal surface combustion. Through the staged combustion mode of the inner and outer rings and the selection of high-temperature and corrosion-resistant materials, the device achieves energy savings of more than 50% without significantly increasing equipment investment. The device has a simple and compact structure, is easy to install and maintain, and is suitable for various application scenarios in the VOCs oil and gas treatment industry.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A staged combustion device, characterized in that, The device includes an inner burner, a supporting isolation section, an outer burner, an isolation support plate, a crescent-shaped lifting isolation valve, and a Venturi premixing chamber unit. The inner burner is located on the upper side of the Venturi premixing chamber unit, and the outer burner is located around the outer side of the inner burner. A supporting isolation section is provided between the inner and outer burners, and an isolation support plate is provided between the outer burner and the Venturi premixing chamber unit. The inner and outer burners are connected by a crescent-shaped lifting isolation valve, which is located on the supporting isolation section.

2. The staged combustion device according to claim 1, characterized in that, The diameter of the outer burner is twice the diameter of the inner burner.

3. The staged combustion device according to claim 1, characterized in that, There are two crescent-shaped isolation valves.

4. The staged combustion device according to claim 3, characterized in that, The crescent-shaped lifting isolation valves are respectively located on both sides of the supporting isolation section.

5. A staged combustion device according to claim 1, characterized in that, The supporting isolation section is made of high-temperature resistant ceramic or silicate material.

6. A staged combustion device according to claim 1, characterized in that, The diameter of the upper side of the Venturi premixing chamber unit is larger than the diameter of the lower side.

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