Anti-blocking coal gas primary cooler

Abstract

The utility model relates to the technical field of gas primary coolers, in particular to an anti-blocking gas primary cooler. The device is of a vertical structure, comprises a coal gas washing section, a low-temperature water section, a circulating water section and a coal gas equalizing section which are fixedly connected in sequence from bottom to top, and further comprises an ammonia water tank connected with a coal gas washing section pipeline, the coal gas washing section is provided with an ammonia water spraying pipe, and coal gas is washed by ammonia water; the coal gas washing section is connected with the coal gas equalizing section through a coal gas connecting pipeline, and washed coal gas without impurities enters the coal gas equalizing section through a pipeline; the coal gas is provided with a horizontal main pipe and a plurality of branch pipes symmetrically arranged on the two sides of the main pipe in a segmented mode, and the coal gas evenly enters the primary cooler through the branch pipes. The impurity content in the gas is reduced and the gas primary cooler is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of coal gas primary coolers, in particular to an anti-clogging coal gas primary cooler. Background Art

[0002] After cooling through the gas collecting pipe, coke oven gas remains at a high temperature and contains significant amounts of harmful substances such as ammonia and naphthalene. A cooler is required for initial purification and to further reduce the gas dew point, facilitating stable operation of subsequent gas purification equipment. The 80-82°C coke oven gas is separated along the gas intake pipeline by a gas-liquid separator before entering the top of a horizontal tube primary gas cooler. After cooling to 21-22°C, the gas enters an electrostatic precipitator to remove tar mist and undergo further gas purification.

[0003] Existing pre-coolers use a cleaning fluid to flush impurities such as tar and naphthalene from the outer walls of the heat exchange tubes at the top of the pre-cooler, effectively cooling the gas within the pre-cooler. However, with the increasing size of coke ovens and changes in coal loading methods, the uneven distribution of gas inlets caused by the larger pre-cooler has reduced heat exchange efficiency and increased pulverized coal in the gas, leading to severe blockage in the pre-cooler and affecting its operation. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides an anti-clogging coal gas primary cooler, which reduces the impurity content in the coal gas and avoids clogging of the coal gas primary cooler.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A blockage-resistant gas pre-cooler is a vertical structure comprising a gas washing section, a low-temperature water section, a circulating water section and a gas equalizing section fixedly connected in sequence from bottom to top, and an ammonia tank connected to the gas washing section pipeline; the gas washing section is provided with an ammonia spraying pipe for washing the gas with ammonia; the gas washing section is connected to the gas equalizing section via a gas connecting pipeline, and the gas from which impurities have been removed after washing enters the gas equalizing section via the pipeline; the gas equalizing section is provided with a horizontal main pipe and a plurality of branch pipes symmetrically arranged on both sides of the main pipe, and the gas enters the interior of the pre-cooler evenly through the branch pipes.

[0007] Furthermore, one end of the horizontal main pipe for evenly dividing the gas is provided with a flange and a flange cover, and the other end is connected to the gas outlet of the gas washing section through a gas connecting pipe; the top of the main pipe is aligned with the top of the branch pipe.

[0008] Furthermore, the gas connecting pipeline includes an elbow, a top straight pipe section, an inclined pipe section and a bottom straight pipe section connected in sequence from top to bottom; the elbow is connected to the main pipe, and the bottom straight pipe section is connected to the gas outlet.

[0009] Furthermore, the gas washing section includes a main body and a partition, a gas inlet, a baffle, an ammonia spraying pipe and a gas outlet installed on the main body; the partition is horizontally fixed to the main body and is located in the middle; the baffle is located below the partition and is staggered up and down, and an ammonia spraying pipe is arranged between the baffles, and the ammonia spraying pipe is provided with a nozzle; the gas passing through the gas inlet passes through the baffle and is deflected at the bottom of the pre-cooler, constantly in contact with the sprayed ammonia, and the gas with some impurities removed enters the gas connecting pipe through the gas outlet.

[0010] Furthermore, it also includes a manhole, a cleaning liquid outlet and an ammonia water outlet fixed on the main body; the cleaning liquid outlet is located above the partition.

[0011] Furthermore, it also includes a heat insulation material, which is installed at the lower part of the partition.

[0012] Furthermore, the nozzle is an anti-clogging nozzle.

[0013] Furthermore, the ammonia tank includes a first ammonia inlet, a cylinder, a second ammonia inlet, a left head, a right head, an ammonia outlet and a vertical partition; the axis of the cylinder is horizontal, and the left head and the right head are fixedly connected to the two ends of the cylinder; the first ammonia inlet is fixedly connected to the left head, and the first ammonia inlet is connected to the ammonia outlet pipe; the second ammonia inlet is fixedly connected to the cylinder, and the second ammonia inlet is connected to the ammonia pipe; the ammonia outlet is fixedly connected to the right head, and the ammonia outlet is connected to the ammonia spray pipe pipe; the vertical partition is fixedly connected to the inner wall of the cylinder and is located in the middle.

[0014] Furthermore, it also includes an ammonia water pump, which is installed on a pipeline connecting the ammonia water outlet and the ammonia water spraying pipe.

[0015] Furthermore, it also includes a vent, which is fixed to the bottom of the cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The bottom of the primary cooler of the utility model is a gas washing section, and the gas washing section is equipped with an ammonia water spraying pipe. Ammonia water is used to wash the gas at the bottom to reduce the impurity content in the gas and avoid clogging of the gas primary cooler.

[0018] 2. The top of this utility model is divided into sections for evenly distributing gas. This section features a horizontal main pipe and multiple branch pipes symmetrically arranged on either side of the main pipe. Gas enters the precooler evenly through the branch pipes, ensuring uniform gas distribution into the precooler. The tops of the branch pipes are also aligned, and the tops also function as impurity removal devices. Any impurities such as coal dust that accumulate at the bottom of the main pipe can be removed by opening the flange cover.

[0019] 3. The heat insulation material of the utility model is installed at the lower part of the horizontal partition to prevent the temperature of the ammonia water from affecting the temperature of the cleaning liquid and the gas.

[0020] 4. The nozzle of this utility model adopts anti-blocking nozzle to ensure the stable operation of the ammonia spraying system.

[0021] 5. The utility model has a vertical structure, the equipment is simple and compact, and the floor space is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic front view of the structure of the utility model.

[0023] Figure 2 for Figure 1 AA cross-sectional view.

[0024] Figure 3 for Figure 1 BB cross-sectional view.

[0025] In the figure: 1 - gas washing section 2 - low temperature water section 3 - circulating water section 4 - gas equalization section 5 - ammonia tank 6 - gas connecting pipe 11 - front and rear wall panels 12 - left and right wall panels 13 - bottom plate 14 - partition 15 - gas inlet 16 - baffle 17 - ammonia spray pipe 18 - gas outlet 19 - thermal insulation material 110 - nozzle 111 - manhole 112 - cleaning liquid outlet 113 - ammonia outlet 41 - spray liquid inlet 42 - main pipe 43 - branch pipe 44 - flange 45 - flange cover 51 - first ammonia inlet 52 - cylinder 53 - second ammonia inlet 54 - left end cap 55 - right end cap 56 - ammonia outlet 57 - vertical partition 58 - ammonia pump 59 - vent 61 - elbow 62 - top straight pipe section 63 - inclined pipe section 64 - bottom straight pipe section DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components.

[0029] For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0030] In the description of the present invention, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0032] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0033] like Figure 1-3 As shown, an anti-clogging gas primary cooler is a vertical structure, which includes a gas washing section 1, a low-temperature water section 2, a circulating water section 3 and a gas equalization section 4 fixedly connected from bottom to top, and also includes an ammonia water tank 5 connected to the gas washing section pipeline.

[0034] The main body of the gas washing section 1 includes front and rear wall panels 11, left and right wall panels 12 and a bottom plate 13. The bottom plate 13 is a horizontal plate. The front and rear wall panels 11, left and right wall panels 12 are welded to form a rectangular cylinder, which is vertically fixed to the bottom plate 13.

[0035] The gas washing section 1 further includes a partition 14 , a gas inlet 15 , a baffle 16 , an ammonia water spraying pipe 17 , a gas outlet 18 , a heat insulating material 19 , a nozzle 110 , a manhole 111 , a cleaning liquid outlet 112 and an ammonia water outlet 113 .

[0036] Partition 14 is horizontally fixed to the main body, located in the middle. Manhole 111 is fixed to the left and right walls 12. Cleaning liquid outlet 112 is fixed to the front and rear walls 11, located above partition 14. Cleaning liquid is discharged through outlet 112. Gas inlet 15 and gas outlet 18 are located below partition 14. Gas inlet 15 is fixed to the right wall, and gas outlet 18 is fixed to the front wall. Two ammonia outlets 113 are fixed to the front wall, located at the bottom.

[0037] Baffles 16 are staggered vertically. In this embodiment, three baffles 16 are provided: one fixed to the center of the base plate 13, and the other two fixed to the bottom surface of the partition 14, located on either side of the baffle 16 fixed to the base plate 13. Ammonia spray pipes 17 are located between the baffles 16. These pipes are equipped with nozzles 110, which are anti-clogging nozzles and ensure stable operation of the ammonia spray system. In this embodiment, four ammonia spray pipes 17 are provided. These nozzles 110 evenly spray the ammonia onto the coal gas, removing impurities such as coal dust entrained in the gas.

[0038] Insulation material 19 is installed beneath horizontal partition 14 to prevent the ammonia temperature from affecting the cleaning fluid and gas temperatures. Gas entering through gas inlet 15 is deflected by baffle 16 at the bottom of the precooler, where it continuously comes into contact with the sprayed ammonia. After some impurities are removed, the gas enters gas connection pipe 6 through gas outlet 18.

[0039] The gas evenly distributing section 4 is located at the top of the primary cooler. The main body of the gas evenly distributing section 4 comprises a rectangular cylinder. The front side plate of the rectangular cylinder is provided with a spray liquid inlet 41. The cover plate is fixed to the top of the rectangular cylinder.

[0040] The gas distribution section 4 includes a horizontal main pipe 42 located at the center above the cover plate. In this embodiment, two branch pipes 43 are provided on each side of the main pipe 42. The top of the main pipe 42 is aligned with the top of the branch pipes 43.

[0041] One end of the main pipe 42 is equipped with a flange 44 and a flange cover 45. The other end is connected to the gas outlet 18 of the gas scrubbing section 1 via a gas connection pipe 6. Impurities such as coal dust accumulate at the bottom of the horizontal main pipe 42 and can be removed by opening the flange cover 44. Multiple branch pipes 43 extend into the top of the pre-cooler to ensure uniform gas flow into the pre-cooler.

[0042] The gas connecting pipe 6 includes an elbow 61 , a top straight pipe section 62 , an inclined pipe section 63 and a bottom straight pipe section 64 connected in sequence from top to bottom; the elbow 61 is connected to the main pipe 42 , and the bottom straight pipe section 64 is connected to the gas outlet 18 .

[0043] The ammonia water tank 5 includes a first ammonia water inlet 51 , a cylinder 52 , a second ammonia water inlet 53 , a left end cap 54 , a right end cap 55 , an ammonia water outlet 56 , a vertical partition 57 , an ammonia water pump 58 , a vent 59 and a manhole 111 .

[0044] The axis of the cylinder 52 is horizontal, the left head 54 and the right head 55 are fixedly connected to the left and right ends of the cylinder 52, and the support is fixedly connected to the bottom of the cylinder 52 to support the cylinder.

[0045] The first ammonia inlet 51 is fixed to the left end cap 54 and is connected to the ammonia outlet 113 via a pipeline. The first ammonia inlet 51 is lower than the ammonia outlet 113. The second ammonia inlet 53 is connected to the ammonia pipeline and is supplied with supplementary ammonia from the tank area.

[0046] Ammonia outlet 56 is fixed to the lower portion of right end cap 55 and is connected to ammonia spray pipe 17. Ammonia pump 58 is mounted on the pipe connecting ammonia outlet 56 and ammonia spray pipe 17. A vertical partition 57 is fixed to the inner wall of cylinder 52, located in the middle. Vents 59 are provided on either side of vertical partition 57 and are fixed to the bottom of the outer wall of cylinder 52.

[0047] The first ammonia inlet 51 is connected to the ammonia outlet 113. Ammonia, carrying impurities such as pulverized coal, enters the ammonia tank 5 from the precooler and is deposited on the left side of the vertical partition 57. After the impurities are deposited at the bottom, they are sent to the tar-ammonia separation section via the left vent 59. Ammonia at the top flows to the right side of the vertical partition 57 and is pumped by the ammonia pump 58 to the ammonia spray pipe 17 for recycling. The sediment at the bottom is sent to the tar-ammonia separation section via the right vent 59. The second ammonia inlet 5 receives supplemental ammonia from the tank area to meet the required circulating spraying volume.

[0048] The working principle and working process of this utility model are as follows:

[0049] The coal gas passing through the coal gas inlet 15 is diverted through the baffle 16 at the bottom of the primary cooler. The baffles 16 are arranged in an alternating pattern. Ammonia spraying pipes 17 are provided between the baffles 16. The spraying pipes are provided with nozzles 110. Ammonia is evenly sprayed onto the coal gas to remove impurities such as coal powder entrained in the coal gas.

[0050] The gas, with some impurities removed, enters the gas connecting pipe 6 through gas outlet 18. Horizontal partitions 14 are welded to the front and rear walls 11 and the left and right walls 12. The cleaning fluid is discharged through cleaning fluid outlet 112. Insulation material 19 is installed below horizontal partitions 14 to prevent the ammonia temperature from affecting the cleaning fluid and gas temperatures.

[0051] The first ammonia inlet 51 is connected to the ammonia outlet 113. Ammonia, carrying impurities such as pulverized coal, enters the ammonia tank 5 from the precooler and is deposited on the left side of the vertical partition 57. After the impurities are deposited at the bottom, they are sent to the tar-ammonia separation section via the left vent 59. Ammonia at the top flows to the right side of the vertical partition 57 and is pumped by the ammonia pump 58 to the ammonia spray pipe 17 for recycling. The sediment at the bottom is sent to the tar-ammonia separation section via the right vent 59. The second ammonia inlet 5 receives supplemental ammonia from the tank area to meet the required circulating spraying volume.

[0052] Branch pipe 43 is aligned with the top of main pipe 42. Impurities such as coal dust deposited at the bottom of main pipe 42 can be removed by opening flange cover 45. Branch pipe 43 branches into the top of the primary cooler, ensuring uniform gas flow into the primary cooler. Inside the primary cooler, the gas passes through a circulating water section and a low-temperature water section, cooling it to 21-22°C. It is then fed to an electric precipitator, where tar mist and dust particles are removed for further purification.

[0053] This utility model uses ammonia water to wash the gas at the bottom to reduce the impurity content in the gas. A gas distribution device is used at the top to ensure that the gas entering the primary cooler is evenly distributed. At the same time, the top of the branch pipes is aligned, and the top also has an impurity removal function. It is also simple and compact, reducing space.

[0054] The above description is only part of the specific implementation methods of the present invention, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and the utility model concept of the present invention, should be covered by the protection scope of the present invention.

Claims

1. An anti-clogging gas primary cooler, characterized by: The gas primary cooler is a vertical structure, including a gas washing section, a low-temperature water section, a circulating water section and a gas section fixed in sequence from bottom to top, and also includes an ammonia tank connected to the gas washing section pipeline; The gas washing section is provided with an ammonia water spraying pipe for washing the gas with ammonia water; the gas washing section is connected to the gas equalization section through a gas connecting pipe, and the gas after washing and removing impurities enters the gas equalization section through the pipe; The coal gas is evenly divided into sections and provided with a horizontal main pipe and a plurality of branch pipes symmetrically arranged on both sides of the main pipe, and the coal gas evenly enters the interior of the primary cooler through the branch pipes.

2. The anti-clogging gas primary cooler according to claim 1, characterized in that: One end of the horizontal main pipe for evenly dividing the gas is provided with a flange and a flange cover, and the other end is connected to the gas outlet of the gas washing section through a gas connecting pipe; the top of the main pipe is aligned with the top of the branch pipe.

3. The anti-clogging gas primary cooler according to claim 2, characterized in that: The gas connecting pipeline includes an elbow, a top straight pipe section, an inclined pipe section and a bottom straight pipe section which are sequentially connected from top to bottom; the elbow is connected to the main pipe, and the bottom straight pipe section is connected to the gas outlet.

4. The anti-clogging gas primary cooler according to claim 1, characterized in that: The gas washing section includes a body and a partition installed on the body, a gas inlet, a baffle, an ammonia spray pipe and a gas outlet; The partition is fixed horizontally in the body and is located in the middle; the baffle is located below the partition and is staggered up and down; an ammonia spray pipe is set between the baffles, and the ammonia spray pipe is provided with a nozzle; The coal gas passing through the coal gas inlet is deflected by the baffle at the bottom of the primary cooler and continuously contacts with the sprayed ammonia water. The coal gas with some impurities removed enters the coal gas connecting pipe through the coal gas outlet.

5. The anti-clogging gas primary cooler according to claim 4, characterized in that: The utility model also comprises a manhole, a cleaning liquid outlet and an ammonia water outlet which are fixed on the main body; the cleaning liquid outlet is located above the partition.

6. The anti-clogging gas primary cooler according to claim 4, characterized in that: It also includes a heat insulation material, which is installed at the lower part of the partition.

7. The anti-clogging gas primary cooler according to claim 4, characterized in that: The nozzle is an anti-blocking nozzle.

8. The anti-clogging gas primary cooler according to claim 4, characterized in that: The ammonia water tank comprises a first ammonia water inlet, a cylinder, a second ammonia water inlet, a left end cap, a right end cap, an ammonia water outlet and a vertical partition; The axis of the cylinder is horizontal, and the left and right heads are fixed to both ends of the cylinder; The first ammonia water inlet is fixedly connected to the left end cover, and the first ammonia water inlet is connected to the ammonia water outlet pipe; The second ammonia water inlet is fixedly connected to the cylinder, and the second ammonia water inlet is connected to the ammonia water pipeline; The ammonia water outlet is fixed to the right end cap, and the ammonia water outlet is connected to the ammonia water spraying pipe; The vertical partition is fixed to the inner wall of the cylinder and is located in the middle.

9. The anti-clogging gas primary cooler according to claim 8, characterized in that: The utility model also comprises an ammonia water pump, which is installed on a pipeline connecting the ammonia water outlet and the ammonia water spraying pipe.

10. The anti-clogging gas primary cooler according to claim 8, characterized in that: The utility model also comprises a venting port which is fixedly connected to the bottom of the cylinder.

Images