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CN-122006431-A - Molecular sieve dehydration tower device for coal bed gas liquefaction

CN122006431ACN 122006431 ACN122006431 ACN 122006431ACN-122006431-A

Abstract

The invention discloses a molecular sieve dehydration tower device for coal bed gas liquefaction, and particularly relates to the technical field of molecular sieve dehydration, comprising a dehydration tank, a molecular sieve pore plate, a main pipe, a plurality of branch pipes and a spacing cover, wherein the molecular sieve pore plate for adsorption dehydration is arranged in the dehydration tank; the main pipe is arranged below the molecular sieve pore plate, the outer wall of the main pipe is fixedly communicated with a plurality of branch pipes, and the spacing cover is arranged outside the main pipe and near the top end position of the main pipe. The invention realizes multistage shunt interval protection through the main protection piece, the auxiliary protection piece and the top protection piece, has an automatic starting multistage shunt and buffer protection mechanism, effectively avoids high-pressure and high-speed air flow from directly impacting a molecular sieve pore plate, prevents deformation or pulverization caused by impact, and greatly improves the durability of molecular sieve adsorption dehydration, thereby solving the problem that self-protection treatment on the molecular sieve is difficult to realize and the durability of molecular sieve adsorption is poor.

Inventors

  • WANG ZELONG
  • FAN CHI
  • LIU JIE

Assignees

  • 山西泽丰达新能源有限公司

Dates

Publication Date
20260512
Application Date
20260211

Claims (10)

  1. 1. The molecular sieve dehydration tower device for liquefying coal bed gas comprises a dehydration tank (1) and is characterized in that a molecular sieve pore plate (2) for adsorption dehydration is arranged in the dehydration tank (1); The main pipe (3) is arranged below the molecular sieve pore plate (2), and a plurality of branch pipes (4) are fixedly communicated with the outer wall of the main pipe (3); The spacer cover (5) is arranged outside the main pipe (3) and near the top end of the main pipe, a sealing ring (9) is arranged below the spacer cover (5), and a main protection piece is arranged on the outer wall of the spacer cover (5); the auxiliary protection piece is arranged on the outer wall of the sealing ring (9), and an inclined separation cover (6) is arranged on the auxiliary protection piece; the top protection piece is arranged at the top end of the outer wall of the auxiliary protection piece, and a V-shaped plate (7) and a sealing baffle (8) are arranged on the top protection piece; The detection piece is arranged at the bottom end of the main pipe (3); when the pressure of the coalbed methane liquefied body exceeds a set pressure value, the main protection piece drives the sealing ring (9) and the spacing cover (5) to move downwards synchronously, so as to perform split-flow spacing protection on the overpressure coalbed methane liquefied body in the main pipe (3); meanwhile, the sealing ring (9) drives the auxiliary protection piece to act, so that the auxiliary protection piece drives the inclined separation cover (6) to separate and protect the overpressure coal bed gas liquefaction body in the branch pipe (4) at intervals; Meanwhile, the auxiliary protection piece drives the top protection piece to act, the top protection piece drives the V-shaped plate (7) to conduct shunt interval protection on the top end of the branch pipe (4), and the driving baffle plate (8) is used for conducting shunt interval protection on the top end of the main pipe (3).
  2. 2. The molecular sieve dehydration tower device for liquefying coal bed gas according to claim 1, wherein a gap is arranged between the inner wall of the spacing cover (5) and the outer wall of the main pipe (3), and a gap is arranged between the inner wall of the inclined spacing cover (6) and the outer wall of the branch pipe (4).
  3. 3. The molecular sieve dehydration tower apparatus for liquefying coalbed methane according to claim 2, wherein said main protector comprises: the support strips (12) are fixedly connected to the outer wall of the spacing cover (5), the support strips (12) are fixedly connected with the sealing ring (9), guide rings (13) are fixedly arranged on the upper surface and the lower surface of the spacing cover (5), and the length of the spacing cover (5) is larger than that of the sealing ring (9); A plurality of partial pressure holes (14) are formed on the inner wall of the main pipe (3); The explosion-proof electric cylinder (10) is arranged between two of the branched pipes (4), the outer wall of the explosion-proof electric cylinder (10) is fixedly connected with the main pipe (3), the contraction end of the explosion-proof electric cylinder (10) is fixedly connected with the moving block (11), and the moving block (11) is fixedly connected with the sealing ring (9).
  4. 4. The molecular sieve dehydration tower device for liquefying coal bed gas according to claim 3, wherein the two guide rings (13) are symmetrically arranged about the spacing cover (5), and the diameter of the inner wall of the spacing cover (5) is larger than that of the inner wall of the sealing ring (9).
  5. 5. The molecular sieve dehydration tower apparatus for liquefying coalbed methane according to claim 4, wherein said secondary protector comprises: the inclined strip (15) is fixedly connected to the outer wall of the sealing ring (9), and a groove pressing frame (16) is fixed at the bottom end of the inclined strip (15); The sliding shaft (17) slides on the inner wall of the groove pressing frame (16), and the groove pressing frame (16) is used for extruding the sliding shaft (17); the sealing sleeve (18) is fixedly arranged at one end part of the sliding shaft (17), the sealing sleeve (18) is in sliding connection with the branch pipe (4), a plurality of linkage strips (19) are fixedly arranged on the outer wall of the sealing sleeve (18) and above the sliding shaft (17), and the inclined separation cover (6) is fixedly connected with the linkage strips (19); The side row holes (20) are all arranged on the inner wall of the branch pipe (4).
  6. 6. The molecular sieve dehydration tower device for liquefying coal bed gas according to claim 5, wherein the groove pressing frame (16) is in sliding connection with the sealing sleeve (18), and the inclined separation cover (6) and the sealing sleeve (18) are both arranged obliquely.
  7. 7. The molecular sieve dehydration tower device for liquefying coal bed gas according to claim 6, wherein the diameter of the inner wall of the inclined separation cover (6) is larger than that of the sealing sleeve (18).
  8. 8. The molecular sieve dehydration tower apparatus for liquefying coalbed methane according to claim 7, wherein said top protector comprises: The bottom end of the traction rope (21) is fixed at the top end of the outer wall of the sliding shaft (17), a pull shaft (22) is arranged at the top end of the traction rope (21), and the traction rope (21) and the V-shaped plate (7) are fixedly connected with the pull shaft (22); The connecting block (23) is fixed on the upper surface of the V-shaped plate (7), a convex rod (24) is arranged on the inner wall of the connecting block (23), the convex rod (24) is fixedly connected with the dehydration tank (1), and the convex rod (24) is used for guiding the connecting block (23) to slide; The arc-shaped strip (25) is arranged on the upper surface of the sealing plate (8), one of the V-shaped plate (7) and the sealing plate (8) is fixedly connected with the arc-shaped strip (25), and the upper surface of the V-shaped plate (7) and the upper surface of the sealing plate (8) are arranged in parallel; The elastic rope (26) is positioned on one side of the protruding rod (24), the dehydration tank (1) and the V-shaped plate (7) are fixedly connected with the elastic rope (26), and the elastic rope (26) is used for providing elasticity for the V-shaped plate (7).
  9. 9. The molecular sieve dehydration tower device for coal bed gas liquefaction according to claim 8, wherein the outer wall of the haulage rope (21) is slidably connected with a guide sleeve (27), one side of the guide sleeve (27) is fixedly provided with a supporting rod (28), and the supporting rod (28) is fixedly connected with the dehydration tank (1).
  10. 10. The molecular sieve dehydration tower apparatus for liquefying coalbed methane according to claim 9, wherein said detecting member comprises: The electric valve (29) is installed in the bottom of being responsible for (3) in the intercommunication, the tip screw thread intercommunication of electric valve (29) has admission pipe (30), pressure sensor (31) have been inserted to the outer wall of admission pipe (30), just the outer wall of dehydration jar (1) is equipped with controller (32), electric valve (29) and pressure sensor (31) all with controller (32) electric connection, just electric connection between explosion-proof jar (10) and controller (32), the outer wall of dehydration jar (1) just is close to its top position department intercommunication has outlet duct (33).

Description

Molecular sieve dehydration tower device for coal bed gas liquefaction Technical Field The invention relates to the technical field of molecular sieve dehydration, in particular to a molecular sieve dehydration tower device for coal bed gas liquefaction. Background The molecular sieve dehydration tower device for the coal bed gas liquefaction is one of core equipment in the coal bed gas liquefaction, and has the main functions of removing moisture in the coal bed gas through the adsorption of a molecular sieve, realizing gas-liquid separation and ensuring the stability and the product quality of the liquefaction process. In the prior art, patent publication No. CN116371133A discloses a molecular sieve three-tower dehydration regeneration device for recovering natural gas ethane, the technology judges the switching of a molecular sieve tower according to a step number value, performs the operation of the switching tower, repeatedly performs the next switching period, or performs alarming and interrupts the withdrawal. However, this technique has the following problems. When the molecular sieve is adopted for adsorption and dehydration in the coal bed gas liquefaction, obvious problems exist, when the pressure and flow of the coal bed gas liquefaction are increased, the high-pressure coal bed gas liquefaction is directly opened, the wet water body in the coal bed gas liquefaction can directly impact the adsorption surface of the molecular sieve, the adsorption surface can deform, the molecular sieve can be further pulverized and damaged in advance due to impact, the automatic adjustment treatment on the coal bed gas liquefaction is difficult to realize self-protection treatment on the molecular sieve according to the actual use requirement, and the adsorption durability of the molecular sieve is poor. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides the technical scheme that the molecular sieve dehydration tower device for liquefying coal bed gas comprises a dehydration tank, wherein a molecular sieve pore plate for adsorption dehydration is arranged in the dehydration tank; The main pipe is arranged below the molecular sieve pore plate, and the outer wall of the main pipe is fixedly communicated with a plurality of branch pipes; the spacer cover is arranged outside the main pipe and near the top end of the main pipe, a sealing ring is arranged below the spacer cover, and a main protection piece is arranged on the outer wall of the spacer cover; the auxiliary protection piece is arranged on the outer wall of the sealing ring and is provided with an inclined separation cover; the top protection piece is arranged at the top end of the outer wall of the auxiliary protection piece, and a V-shaped plate and a baffle plate are arranged on the top protection piece; The detection piece is arranged at the bottom end of the main pipe; When the pressure of the coalbed methane liquefied body exceeds a set pressure value, the main protection piece drives the sealing ring and the spacing cover to synchronously move downwards, so as to perform split-flow spacing protection on the overpressure coalbed methane liquefied body in the main pipe; meanwhile, the sealing ring drives the auxiliary protection piece to act, so that the auxiliary protection piece drives the inclined separation cover to separate the overpressure coal bed gas liquefied body in the branch pipe for separation protection; Meanwhile, the auxiliary protecting piece drives the top protecting piece to act, the top protecting piece drives the V-shaped plate to conduct shunt interval protection on the top ends of the branched pipes, and the sealing baffle is driven to conduct shunt interval protection on the top ends of the main pipes. In a preferred embodiment, a gap is provided between the inner wall of the spacing cover and the outer wall of the main pipe, and a gap is provided between the inner wall of the inclined spacing cover and the outer wall of the branch pipe. In a preferred embodiment, the main protector comprises: The support bars are fixedly connected to the outer wall of the interval cover, the support bars are fixedly connected with the sealing ring, guide rings are fixedly arranged on the upper surface and the lower surface of the interval cover, and the length of the interval cover is larger than that of the sealing ring; the plurality of partial pressure holes are formed in the inner wall of the main pipe; the explosion-proof electric cylinder is arranged between the two branch pipes, the outer wall of the explosion-proof electric cylinder is fixedly connected with the main pipe, the movable block is fixedly connected with the contraction end of the explosion-proof electric cylinder, and the movable block is fixedly connected with the sealing ring. In a preferred embodiment, two of the guide rings are arranged symmetrically with respect to the spacer housing, and the inner wall diameter of the sp