Dry-type tar removal filter for gasification furnace

Abstract

The utility model discloses a dry type tar removal filter of a gasification furnace, which comprises a shell, a fuel gas inlet, a fuel gas outlet, a spoiler, a feed port and a discharge port, a filler cavity is arranged in the shell, and filler is arranged in the filler cavity; the spoiler is vertically arranged in the filler cavity, the top of the spoiler is connected with the top wall of the shell, a gap is formed between the bottom of the spoiler and the bottom wall of the shell, and the spoiler divides the filler cavity into a first filler cavity and a second filler cavity; the fuel gas inlet and the fuel gas outlet are both formed in the outer wall of the shell, the fuel gas inlet communicates with the first filler cavity, and the fuel gas outlet communicates with the second filler cavity; the feeding openings comprise the first feeding opening and the second feeding opening, the first feeding opening and the second feeding opening are both formed in the top of the shell, the first feeding opening communicates with the first filling cavity, and the second feeding opening communicates with the second filling cavity. The technical effects that the whole structure is simple, overhaul and maintenance are convenient, corncobs and saw dust can be used as filler, the cost is low, the filler is easy to obtain, and the investment and operation cost is low are achieved.

Description

Technical Field

[0001] This utility model relates to the field of gas filtration and purification technology, specifically to a dry tar removal filter for a gasifier. Background Technology

[0002] When biomass / municipal waste is pyrolyzed and gasified to produce fuel gas, and this fuel gas is then fed into a generator set for power generation, the generator set's intake requirements need to be considered. Generally, generator sets require the fuel gas to have a tar content of ≤50mg / Nm³. 3 Moisture content ≤20g / Nm 3 It is difficult to meet the requirements with a single-stage purification device; generally, three or more stages of equipment in parallel are needed to remove tar, dust, and moisture from the fuel gas. The simultaneous operation of multiple stages results in high system investment and operating costs. Furthermore, the viscosity of tar leads to high maintenance costs and difficulties in repairing some equipment. Therefore, a new tar removal filter needs to be designed to solve these technical problems. Utility Model Content

[0003] Therefore, this utility model provides a dry tar removal filter for gasifiers to solve the above-mentioned problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] According to a first aspect of the present invention, a dry tar removal filter for a gasifier includes a shell, a gas inlet, a gas outlet, a baffle plate, a feed port, and a discharge port. The shell is provided with a packing cavity, and the packing cavity is provided with packing material.

[0006] The spoiler is vertically disposed in the packing cavity. The top of the spoiler is connected to the top wall of the shell, and the bottom of the spoiler is separated from the bottom wall of the shell. The spoiler divides the packing cavity into a first packing cavity and a second packing cavity.

[0007] Both the gas inlet and the gas outlet are located on the outer wall of the housing. The gas inlet communicates with the first packing cavity, and the gas outlet communicates with the second packing cavity.

[0008] The feeding port includes a feeding port one and a feeding port two, both of which are located on the top of the housing. The feeding port one communicates with the first packing cavity, and the feeding port two communicates with the second packing cavity. The discharge port is located at the bottom of the housing.

[0009] Furthermore, the gas inlet and gas outlet are symmetrically arranged on the outer side wall of the housing along the baffle, and both the gas inlet and the gas outlet are close to the top of the housing.

[0010] Furthermore, the discharge port is located directly below the spoiler.

[0011] Furthermore, it also includes an inlet observation window and an outlet observation window, both of which are located on the outer wall of the housing, with the inlet observation window located below the gas inlet and the outlet observation window located below the gas outlet.

[0012] Furthermore, the bottom of the shell is funnel-shaped.

[0013] Furthermore, the spoiler is plate-shaped.

[0014] Furthermore, the shell is cylindrical.

[0015] Furthermore, the filler includes corn cobs and sawdust.

[0016] This utility model has the following advantages: simple overall structure, convenient inspection and maintenance, low labor cost, and the filler can use corn cobs and sawdust, which are inexpensive and readily available, resulting in low investment and operating costs. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 This is a front view of a dry tar removal filter for a gasifier, provided for some embodiments of the present invention.

[0020] Figure 2 This is a top view of a dry tar removal filter for a gasifier, provided for some embodiments of the present invention.

[0021] In the diagram: 1. Shell, 2. Observation window at the inlet, 3. Gas inlet, 4. Feed port one, 5. Feed port two, 6. Gas outlet, 7. Observation window at the outlet, 8. Baffle plate, 9. Discharge port. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Example 1

[0024] like Figure 1 and Figure 2 As shown, a dry tar removal filter for a gasifier in the first aspect embodiment of the present invention includes a shell 1, a gas inlet 3, a gas outlet 6, a baffle plate 8, a feed port and a discharge port 9. The shell 1 is cylindrical and has a packing cavity inside, which contains packing material.

[0025] The baffle 8 is plate-shaped and is vertically installed in the packing cavity. The top of the baffle 8 is connected to the top wall of the shell 1, the two sides of the baffle 8 are connected to the inner wall of the shell 1, and the bottom of the baffle 8 is separated from the bottom wall of the shell 1. The baffle 8 divides the packing cavity into a first packing cavity and a second packing cavity. The baffle 8 is used to change the flow direction of the gas, so that the residence time of the gas inside the shell 1 is longer, thereby improving the removal rate of tar and moisture in the gas.

[0026] Both the gas inlet 3 and the gas outlet 6 are located on the outer wall of the shell 1. The gas inlet 3 is connected to the first packing cavity, and the gas outlet 6 is connected to the second packing cavity. The gas from the front-end equipment enters the interior of the shell 1 through the gas inlet 3. After being purified by the packing, the gas flows out through the gas outlet 6 and enters the boiler of the generator set at the rear end.

[0027] The feeding ports include feeding port 4 and feeding port 5, both of which are located at the top of the shell 1. Feeding port 4 and feeding port 5 are located at the top of the first packing chamber and the second packing chamber, respectively. Feeding port 4 is connected to the first packing chamber, and feeding port 5 is connected to the second packing chamber. Feeding port 4 and feeding port 5 are used to add filler into the first packing chamber and the second packing chamber, respectively. The filler is made of corn cob and sawdust, which are inexpensive and readily available. The bottom of the shell 1 is funnel-shaped, and the discharge port 9 is located at the bottom of the shell 1. It is used to remove the slag in the first and second packing chambers when the filler is saturated or when the machine is stopped, and to process it centrally.

[0028] In this embodiment, it should be noted that the gas inlet 3 and the gas outlet 6 are symmetrically arranged on the outer side wall of the housing 1 along the baffle 8, and the gas inlet 3 and the gas outlet 6 are both close to the top of the housing 1. The discharge port 9 is located directly below the baffle 8, and a discharge valve is provided at the discharge port 9.

[0029] Furthermore, the filtration principle of the entire filter is as follows: the gas enters the packing cavity inside the housing 1 from the gas inlet 3. Due to the built-in baffle 8, the gas flows from top to bottom. After passing through the corn cob and sawdust packing with adsorption properties, it flows from bottom to top to the gas outlet 6 after passing under the baffle 8, thus completing the adsorption and purification of the gas. The baffle 8 can effectively prolong the residence time of the gas in the housing 1, thereby improving the gas adsorption and purification effect. The entire filter can be used as the last stage equipment of the purification system to remove the remaining tar and moisture in the gas through the adsorption of the packing, so as to meet the intake requirements of the downstream generator set for tar and moisture, ensure the stable operation of the system, and extend the maintenance cycle and life of the generator set.

[0030] The technical effects achieved by this embodiment are: simple overall structure, convenient inspection and maintenance, low labor cost, and the use of corn cobs and sawdust as fillers, which are inexpensive and readily available, resulting in low investment and operating costs.

[0031] Example 2

[0032] like Figure 1 and Figure 2 As shown in this embodiment, another dry tar removal filter for a gasifier is provided, the structure of which includes all the contents of Embodiment 1. Only the different parts are described below.

[0033] In this embodiment, an inlet observation window 2 and an outlet observation window 7 are also included. Both the inlet observation window 2 and the outlet observation window 7 are disposed on the outer wall of the housing 1, with the inlet observation window 2 disposed below the gas inlet 3 and the outlet observation window 7 disposed below the gas outlet 6.

[0034] In this embodiment, it should be noted that the observation window 2 at the inlet and the observation window 7 at the outlet are used to periodically observe the changes in the packing material at the inlet and outlet. The packing material is replaced in a timely manner based on changes such as the color of the packing material, thereby ensuring the adsorption and purification effect.

[0035] Furthermore, during use, multiple filters can be connected in series to further improve the adsorption and purification effect, or two filters can be connected in parallel to switch pipelines when performing filter maintenance or cleaning, ensuring continuous adsorption and purification of the gas.

[0036] The technical effect achieved by this embodiment is that by setting the observation window 2 at the inlet and the observation window 7 at the outlet, the status of the packing at the gas inlet and the gas outlet can be observed at any time, so as to replace the packing in a timely manner and thus ensure the adsorption and purification effect.

[0037] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0038] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

Claims

1. A dry tar removal filter for a gasifier, characterized in that, It includes a shell (1), a gas inlet (3), a gas outlet (6), a baffle (8), a feed port and a discharge port (9). The shell (1) is provided with a packing cavity, and the packing cavity is provided with packing. The baffle (8) is vertically arranged in the packing cavity. The top of the baffle (8) is connected to the top wall of the shell (1), and the bottom of the baffle (8) is provided with a gap from the bottom wall of the shell (1). The baffle (8) divides the packing cavity into a first packing cavity and a second packing cavity. The gas inlet (3) and the gas outlet (6) are both located on the outer wall of the housing (1). The gas inlet (3) is connected to the first packing cavity, and the gas outlet (6) is connected to the second packing cavity. The feeding port includes a feeding port one (4) and a feeding port two (5). The feeding port one (4) and the feeding port two (5) are both located at the top of the housing (1). The feeding port one (4) is connected to the first packing cavity, and the feeding port two (5) is connected to the second packing cavity. The discharge port (9) is located at the bottom of the housing (1).

2. The dry tar removal filter for a gasifier according to claim 1, characterized in that, The gas inlet (3) and gas outlet (6) are symmetrically arranged on the outer side wall of the housing (1) along the baffle (8), and the gas inlet (3) and the gas outlet (6) are both close to the top of the housing (1).

3. The dry tar removal filter for a gasifier according to claim 1, characterized in that, The discharge port (9) is located directly below the baffle plate (8).

4. A dry tar removal filter for a gasifier according to claim 2, characterized in that, It also includes an inlet observation window (2) and an outlet observation window (7), both of which are located on the outer wall of the housing (1). The inlet observation window (2) is located below the gas inlet (3), and the outlet observation window (7) is located below the gas outlet (6).

5. A dry tar removal filter for a gasifier according to claim 1, characterized in that, The bottom of the shell (1) is funnel-shaped.

6. The dry tar removal filter for a gasifier according to claim 1, characterized in that, The spoiler (8) is plate-shaped.

7. A dry tar removal filter for a gasifier according to claim 1, characterized in that, The shell (1) is cylindrical.

8. A dry tar removal filter for a gasifier according to claim 1, characterized in that, The filler includes corn cobs and sawdust.

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