Protection structure for burner part of gasification furnace

Abstract

A protection structure for a burner part of a gasification furnace relates to the field of coal water slurry gasification and comprises a protection plate layer, a hot face brick layer and a backing brick layer, the hot face brick layer and the backing brick layer are arranged outside the protection plate layer, the protection plate layer is cylindrical and is formed by splicing a plurality of protection plate sections from left to right, and matched concave-convex tables are arranged at the splicing positions of the adjacent protection plate sections. A cylindrical burner channel communicating the hearth with the external space is formed, four warning indicators are evenly arranged in the circumferential direction of each protection plate section at intervals, and the warning indicators are all located in the protection plate sections and close to the one-third positions of the outer circle faces of the protection plate sections; a backing brick layer and a hot face brick layer are sequentially arranged outside the protective plate layer from left to right, a plurality of backing bricks of the backing brick layer are arranged on the left side and the middle of the exterior of the protective plate layer, a plurality of hot face bricks of the hot face brick layer are arranged on the right side of the exterior of the protective plate layer, and the hot face bricks close to the hearth are in lap joint with the protective plate section located on the right side; the structure is compact, replacement and disassembly are convenient, and the defect that the furnace shell at the burner part is burnt is avoided.

Description

Technical Field

[0001] The utility model relates to the field of water coal slurry gasification, in particular to a protection structure for the burner part of a gasifier. Background Technique

[0002] As is known, for the gasifiers currently used in China, since the burner brick part is located in the middle of the furnace body, when the high-temperature gas flow in the furnace runs in the gasifier, if the brick joint between the burner brick and the adjacent cylinder brick is too large during masonry, or the joint becomes too large due to thermal expansion, the high-temperature gas will form a convection through the hot gasification furnace chamber → burner channel → ash joint between the high-chromium brick and the low-chromium brick → ash joint between the burner brick and the cylinder high-chromium brick → gasification furnace chamber, causing the over-temperature of the burner part and bringing certain potential safety hazards; and with the operation of the gasifier, the burner channel brick is eroded too fast, ultimately affecting the service life of the refractory bricks of the gasifier. Once the outer shell of the burner is over-temperature and the burner part outer shell is damaged, it is necessary to cool down the outer shell or replace the burner outer shell; in order to prevent excessive erosion of the annular bricks at the burner part, generally the gasifier needs to be shut down 2 - 3 times. After the furnace body cools down, observe the erosion situation of the burner annular bricks to judge the remaining life, consuming manpower and material resources. Currently, there is an urgent need for a method to solve the above problems. Summary of the Invention

[0003] In order to overcome the deficiencies in the background technique, the utility model discloses a protection structure for the burner part of a gasifier.

[0004] In order to achieve the above-mentioned invention purpose, the utility model adopts the following technical scheme:

[0005] A protection structure for the burner part of a gasifier includes a guard plate layer, a hot face brick layer and a backing brick layer arranged outside the guard plate layer. The guard plate layer is cylindrical and is spliced by a plurality of guard plate segments from left to right. At the splicing position of adjacent guard plate segments, matching concave and convex platforms are provided to form a cylindrical burner channel connecting the furnace chamber and the external space. Four warning devices are evenly arranged at intervals in the circumferential direction of each guard plate segment. The warning devices are all located inside the guard plate segment and are close to one-third of the outer circular surface of the guard plate segment; outside the guard plate layer, there are a backing brick layer and a hot face brick layer from left to right in sequence. Multiple backing brick blocks of the backing brick layer are arranged on the left side and the middle part outside the guard plate layer, and multiple hot face brick blocks of the hot face brick layer are arranged on the right side outside the guard plate layer. The hot face brick blocks near the furnace chamber are overlapped and connected with the guard plate segments on the right side.

[0006] For the protection structure of the burner part of the gasifier, the hot face brick blocks near the furnace chamber are provided with clamping platforms, and are overlapped with the guard plate segments through the clamping platforms, and high-strength fire clay is arranged at the overlapping position.

[0007] The protection structure at the burner of the gasifier, wherein the warning device is a signal transmitter, in the shape of a cylinder with a diameter of 5-6 mm and a length of 10 mm, and is connected to the signal receiving software on an external computer through a signal connection.

[0008] For the protection structure at the burner of the gasifier, on the upper part of multiple refractory bricks near the furnace chamber, a fiber plastic layer, a heat-insulating brick layer, a backing brick layer, and a refractory brick layer are successively arranged from left to right. A fiber plastic layer is provided outside the multiple backing bricks arranged on the left side and the middle part of the guard plate layer.

[0009] For the protection structure at the burner of the gasifier, multiple sections of the guard plate layer are cast with high-strength erosion-resistant castable, with a thickness of 5 cm, and preferably spliced by three sections of the guard plate.

[0010] For the protection structure at the burner of the gasifier, high-strength fire clay is provided between the guard plate layer and the adjacent backing brick layer and refractory brick layer.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0012] For the protection structure at the burner of the gasifier of the utility model, by setting the guard plate layer into multiple sections and arranging warning devices on each section, when the guard plate is eroded by high temperature to the position of the warning device, the signal receiving software on the computer issues an alarm due to insufficient signal, avoiding the drawback of burning out the furnace shell at the burner part. After receiving the alarm, the guard plate section can be individually disassembled and replaced; the structure of the utility model is compact, convenient for replacement and removal, avoiding the risks caused by large-area removal, and the sealing structure between the guard plate layer and the external backing brick layer and refractory brick layer effectively prevents the scouring of high-temperature gas on the outer bricks, especially the brick joints, and has the advantages of good scouring resistance and heat insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model.

[0014] Figure 2 is Figure 1 a side view of

[0015] Figure 3 is a schematic structural diagram of the guard plate layer of the utility model.

[0016] In the figure: 1. Refractory brick layer; 1.1 Refractory brick; 2. Backing brick layer; 2.1 Backing brick; 3. Heat-insulating brick layer; 4. Fiber plastic layer; 5. Guard plate layer; 5.1 Guard plate section; 6. Warning device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The utility model can be explained in detail through the following embodiments. The purpose of disclosing the utility model is to protect all technical improvements within the scope of the utility model.

[0018] Combined with the attached Figures 1-3 The protection structure at the burner part of the gasifier includes a guard plate layer 5, a hot face brick layer 1 and a backing brick layer 2 arranged outside the guard plate layer 5. The guard plate layer 5 is cylindrical and is spliced by a plurality of guard plate segments 5.1 from left to right. Matching concave and convex platforms are arranged at the splicing positions of adjacent guard plate segments 5.1 to form a cylindrical burner channel connecting the furnace chamber and the external space. Four warning devices 6 are evenly arranged at intervals in the circumferential direction of each guard plate segment 5.1. The warning devices 6 are all located inside the guard plate segment 5.1 and are close to one-third of the outer circular surface of the guard plate segment 5.1; The backing brick layer 2 and the hot face brick layer 1 are successively arranged outside the guard plate layer 5 from left to right. High-strength fire clay is provided between the guard plate layer 5 and the adjacent backing brick layer 2 and hot face brick layer 1 to make them closely combined. A plurality of backing brick blocks 2.1 of the backing brick layer 2 are arranged on the left side and the middle part outside the guard plate layer 5. A plurality of hot face brick blocks 1.1 of the hot face brick layer 1 are arranged on the right side outside the guard plate layer 5. The hot face brick block 1.1 near the furnace chamber is lapped and connected with the guard plate segment 5.1 on the right side. The hot face brick block 1.1 near the furnace chamber is provided with a clamping platform, and is lapped with the guard plate segment 5.1 through the clamping platform, and high-strength fire clay is provided at the lapping position to block the brick joints;

[0019] Specifically, the warning device 6 is a signal transmitter, which is cylindrical in shape with a diameter of 5-6 mm and a length of 10 mm, and is signal-connected to the signal receiving software on an external computer.

[0020] Specifically, a fiber plastic layer 4, a refractory insulation brick layer 3, a backing brick layer 2 and a hot face brick layer 1 are successively arranged from left to right on the upper parts of a plurality of hot face brick blocks 1.1 near the furnace chamber. A fiber plastic layer 4 is arranged outside a plurality of backing brick blocks 2.1 arranged on the left side and the middle part outside the guard plate layer 5.

[0021] Specifically, the multiple guard plate segments 5.1 of the guard plate layer 5 are cast by high-strength erosion-resistant castable, with a thickness of 5 cm, and preferably spliced by three guard plate segments 5.1.

[0022] Implement the protection structure for the gasifier burner part of the present utility model. Taking three guard plate segments 5.1 as an example, four warning devices 6 are evenly distributed along the circumferential direction on each guard plate segment 5.1. The warning devices are all arranged at one-third of the distance from the outer circular surface of the guard plate segment 5.1, which is within the safe range. Beyond this range, the guard plate layer will be damaged, and the high-temperature gas in the burner will scour the furnace bricks, and then burn out the outer furnace shell of the burner. The signal of the warning device 6 can cover a distance of 100 meters in diameter. The signal receiving software is installed on the computer. When the gasifier is in the operation stage, the warning device keeps sending signals, and the signal receiving software on the computer always receives the signals. When the guard plate segment 5.1 is eroded by high temperature and the erosion reaches the warning device, the warning device is directly damaged by the high temperature, so that one or two, three or all of the four signals on the guard plate segment 5.1 are interrupted. The signal receiving software on the computer will sound an alarm due to insufficient signals. The alarm means that the service life of the guard plate has reached, reminding to replace it. The guard plate can be disassembled and replaced separately, which can avoid the risks caused by large-area demolition. The guard plate layer is provided with three segments. The guard plate segment 5.1 close to the furnace chamber and the hot face brick block 1.1 on the right are arranged in a snap joint. High-strength refractory mortar is applied at the joint for sealing. High-strength refractory mortar is applied between the outer circular surface of the three guard plate segments 5.1 and the adjacent hot face brick blocks 1.1 and backing brick blocks 2.1 for sealing, which is used to block the scour of the brick joints between the adjacent hot face brick blocks 1.1. The multiple guard plate segments 5.1 of the guard plate layer 5 are cast by high-strength erosion-resistant castable, which has the advantages of good erosion resistance and heat insulation performance.

[0023] The parts not detailed in the present utility model are prior art.

[0024] The embodiments selected in this article for disclosing the invention purpose of the present utility model are considered suitable at present. However, it should be understood that the present utility model is intended to include all changes and improvements of all embodiments within the scope of this concept and utility model.

Claims

1. A protective structure for a burner of a gasifier, comprising a protective plate layer, a hot face brick layer and a backing brick layer arranged outside the protective plate layer, characterized in that: The guard plate layer is cylindrical and is composed of multiple guard plate segments spliced ​​from left to right. Matching concave and convex platforms are arranged at the joints of adjacent guard plate segments to form a cylindrical burner channel connecting the furnace and the external space. Four alarms are evenly arranged in the circumferential direction of each guard plate segment. The alarms are all located inside the guard plate segment and close to one-third of the outer circumferential surface of the guard plate segment; a backing brick layer and a hot surface brick layer are arranged in sequence from left to right on the outside of the guard plate layer, and multiple backing bricks of the backing brick layer are arranged on the left and middle part of the outside of the guard plate layer, and multiple hot surface bricks of the hot surface brick layer are arranged on the right side of the outside of the guard plate layer, and the hot surface bricks close to the furnace are overlapped and connected with the guard plate segment located on the right.

2. The protective structure for the burner of the gasifier according to claim 1 is characterized in that: The hot surface bricks near the furnace are provided with a card platform, which is overlapped with the guard plate section through the card platform, and high-strength fire mud is set at the overlap.

3. The protective structure for the burner of a gasifier according to claim 1 is characterized in that: The alarm device is a signal transmitter, which is cylindrical in shape with a diameter of 5-6 mm and a length of 10 mm, and is connected to the signal receiving software on an external computer through a signal.

4. The protective structure for the burner of the gasifier according to claim 1 is characterized in that: The upper parts of the multiple hot surface bricks near the furnace are provided with a fiber plastic layer, an insulation brick layer, a backing brick layer, and a hot surface brick layer from left to right, and the outer parts of the multiple backing bricks arranged on the left and middle part of the guard plate layer are provided with a fiber plastic layer.

5. The protective structure for the burner of a gasifier according to claim 1 is characterized in that: The multiple sections of the guard plate layer are cast with high-strength corrosion-resistant castables and have a thickness of 5 cm.

6. The protective structure for the burner of a gasifier according to claim 1 is characterized in that: High-strength fire clay is provided between the guard plate layer and the adjacent backing brick layer and hot surface brick layer.

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