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CN-224220771-U - Rectifying column for coal bed gas liquefaction

CN224220771UCN 224220771 UCN224220771 UCN 224220771UCN-224220771-U

Abstract

The utility model relates to the technical field of rectifying towers and discloses a rectifying tower for liquefying coal bed gas, which comprises a rectifying tower body, wherein a liquid outlet pipe is communicated with the bottom wall surface of the rectifying tower body, an adjusting valve is arranged on the outer wall of the liquid outlet pipe, an air inlet pipe is communicated with the outer side wall surface of the rectifying tower body, a fixed frame is arranged in the air inlet pipe, a piston sealing plate is fixedly connected with the outer wall of the fixed frame, a mounting frame is arranged in the fixed frame, a drying layer, a zeolite layer and an active carbon layer are sequentially and fixedly connected with the inner wall of the mounting frame, two adjusting grooves are formed in the side wall surface of the mounting frame, far away from the rectifying tower body, of the mounting frame, and two push rods are respectively and slidably arranged in the two adjusting grooves. The utility model pushes the two push rods in the two regulating grooves to enable the push rods to be close to each other and extrude the telescopic rod and the regulating spring, so that a space is provided for the inserted rod, and the inserted rod is separated from the jack, thereby taking the mounting frame, the drying layer, the zeolite layer and the active carbon layer off from the fixed frame for replacement.

Inventors

  • PENG PENG
  • ZHANG HEJIAN
  • JIAO JUN
  • ZHANG ZHIYONG
  • YANG HAILONG

Assignees

  • 山西兰花煤层气有限公司

Dates

Publication Date
20260512
Application Date
20250328

Claims (6)

  1. 1. The utility model provides a rectifying column for coalbed methane liquefaction, includes rectifying column body (10), and the bottom wall intercommunication of rectifying column body (10) is provided with drain pipe (11), and the outer wall of drain pipe (11) is equipped with the governing valve, and the outside wall intercommunication of rectifying column body (10) is provided with intake pipe (12), wherein, the inside of intake pipe (12) is provided with fixed frame (13), and the outer wall fixedly connected with piston seal piece (14) of fixed frame (13), and the inside of fixed frame (13) is provided with installing frame (19), and the inner wall of installing frame (19) fixedly connected with drying layer (20), zeolite layer (21) and active carbon layer (22) in proper order, and two regulating grooves (23) have been seted up to one side wall that rectifying column body (10) were kept away from to installing frame (19), and two push rods (24) are provided with respectively in the slip on two push rods (24) and are used for carrying out dismouting subassembly to installing frame (19), and dismouting subassembly includes telescopic link (25) and two inserted link (27).
  2. 2. The rectifying tower for liquefying coal bed gas according to claim 1, wherein the upper and lower inner wall surfaces of the air inlet pipe (12) are symmetrically provided with four movable sliding grooves (15), the four movable sliding grooves (15) are respectively provided with sliding blocks (16) in a sliding manner, the four sliding blocks (16) are respectively fixedly connected with the upper and lower outer walls of the piston sealing piece (14), and the outer wall of the piston sealing piece (14) is tightly attached to the inner wall of the air inlet pipe (12).
  3. 3. The rectifying tower for liquefying coal bed methane according to claim 2, wherein the four sliding blocks (16) are divided into a front group and a rear group, the right end wall surfaces of the upper sliding block (16) and the lower sliding block (16) in the two groups are respectively and fixedly connected with a fixing frame (17), the two fixing frames (17) are of arc structures, and a side wall surface of the two fixing frames (17) far away from the piston sealing sheet (14) is respectively and fixedly connected with a pull rod (18).
  4. 4. The rectifying tower for liquefying coal bed methane according to claim 1, wherein two ends of the telescopic rod (25) are respectively fixedly connected to one end wall surface of the two push rods (24) which are close to each other, and an adjusting spring (26) is sleeved on the outer wall of the telescopic rod (25).
  5. 5. The rectifying tower for liquefying coalbed methane according to claim 1, wherein one ends of the two inserted bars (27) close to each other are fixedly connected to a side wall surface of the two push rods (24) far away from each other, and one ends of the two inserted bars (27) far away from the push rods (24) penetrate through the mounting frame (19) and are in sliding connection with the mounting frame (19) respectively.
  6. 6. The rectifying tower for liquefying coal bed methane of claim 1, wherein jacks matched with the inserted rods (27) are symmetrically formed on the inner wall surfaces of the upper side and the lower side of the fixed frame (13) respectively, and one ends of the inserted rods (27) far away from the push rods (24) are slidably inserted into the corresponding jacks respectively.

Description

Rectifying column for coal bed gas liquefaction Technical Field The utility model relates to the technical field of rectifying towers, in particular to a rectifying tower for liquefying coal bed gas. Background A coal gas layer refers to an area where coal gas or natural gas is stored underground, typically found in the geological structure of a coal or natural gas field. These gas formations are typically constructed of porous rock or coal beds with the ability to store and transport gas. In the energy exploitation, especially in the development process of natural gas and coalbed methane, the coal gas layer has important significance. Coalbed methane is composed primarily of methane, which can be extracted and transported by commercial exploitation. However, to increase transportation and use efficiency, coalbed methane generally needs to be subjected to liquefaction. In the liquefaction process, the rectifying column plays a key role. The rectifying tower separates methane from other gases (such as ethane, propane, carbon dioxide, etc.) by fractionation technology, thereby obtaining a methane liquefied product with high purity. This process is critical for efficient utilization of coalbed methane and energy transport. In the coalbed methane liquefaction technology, when the existing rectifying tower for coalbed methane liquefaction is used, though coalbed methane can be filtered, the filtering layers cannot be conveniently detached and replaced, and the filtering layers are gradually saturated and polluted along with the time, so that the filtering effect is reduced, impurities in the gas cannot be effectively removed, and the efficiency of the liquefaction process and the purity of the final product are affected. For this purpose, we propose a rectifying column for coalbed methane liquefaction. Disclosure of utility model The utility model mainly solves the technical problems in the prior art and provides a rectifying tower for liquefying coal bed gas. In order to achieve the above purpose, the rectifying tower for liquefying coal bed gas comprises a rectifying tower body, wherein a liquid outlet pipe is arranged on the bottom wall surface of the rectifying tower body in a communicated mode, an adjusting valve is arranged on the outer wall of the liquid outlet pipe, an air inlet pipe is arranged on the outer side wall surface of the rectifying tower body in a communicated mode, a fixing frame is arranged in the air inlet pipe, a piston sealing plate is fixedly connected to the outer wall of the fixing frame, a mounting frame is arranged in the fixing frame, a drying layer, a zeolite layer and an active carbon layer are sequentially and fixedly connected to the inner wall of the mounting frame, two adjusting grooves are formed in one side wall surface of the mounting frame, far away from the rectifying tower body, of the mounting frame, two pushing rods are respectively arranged in the two adjusting grooves in a sliding mode, and a dismounting assembly for dismounting the mounting frame is respectively arranged on the two pushing rods and comprises a telescopic rod and two inserting rods. As a preferable technical scheme of the utility model, the inner wall surfaces of the upper side and the lower side of the air inlet pipe are symmetrically provided with four movable sliding grooves respectively, sliding blocks are respectively arranged in the four movable sliding grooves in a sliding manner, the four sliding blocks are respectively fixedly connected with the outer walls of the upper side and the lower side of the piston sealing piece, and the outer wall of the piston sealing piece is tightly attached to the inner wall of the air inlet pipe. As a preferable technical scheme of the utility model, four sliding blocks are divided into a front group and a rear group, the right end wall surfaces of an upper sliding block and a lower sliding block in the two groups are respectively and fixedly connected with fixing frames together, the two fixing frames are of arc structures, and a side wall surface of the two fixing frames, which is far away from a piston sealing piece, is respectively and fixedly connected with a pull rod. As a preferable technical scheme of the utility model, two ends of the telescopic rod are respectively and fixedly connected with one end wall surface of the two push rods, which are close to each other, and the outer wall of the telescopic rod is sleeved with an adjusting spring. As a preferable technical scheme of the utility model, one ends of the two inserted bars, which are close to each other, are respectively and fixedly connected with a side wall surface of the two push rods, which is far away from each other, and one ends of the two inserted bars, which are far away from the push rods, respectively penetrate through the mounting frame and are in sliding connection with the mounting frame. As a preferable technical scheme of the utility model, the inner wall surfaces of the upper s