Adsorption drying tower for natural gas dehydration device
By introducing the design of condensation chamber and adsorption chamber in the natural gas dehydration device, combined with refrigeration plate and molecular sieve, the problems of large size, high cost and influence of condensed liquid in the existing device are solved, and efficient and economical natural gas drying is achieved.
Patent Information
- Application Number
- CN202422867528.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-23
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-23
AI Technical Summary
When using existing molecular sieve dehydration devices, the design and filling needs to be calculated based on the saturated water vapor at the highest temperature of natural gas, which leads to an increase in equipment volume and construction costs. It cannot effectively separate liquid water and heavy hydrocarbons, affecting the dehydration effect, and condenses liquid when the ambient temperature drops, increasing the molecular sieve load.
Adsorption drying tower design is adopted, which includes condensation chamber and adsorption chamber. Refrigeration plate is used to condense and remove liquid water, and molecular sieve is combined for fine drying. The water retaining cover is used to prevent the condensed water from flowing back, thus reducing the equipment load.
It achieves the goal of reducing costs while ensuring the drying effect, preventing the backflow of condensed water, and improving the natural gas dehydration efficiency and the service life of the molecular sieve.
Smart Images
Figure CN223381372U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of natural gas drying, in particular to an adsorption drying tower used in a natural gas dehydration device. Background Art
[0002] Molecular sieves are porous aluminum silicate crystals with numerous cavities within their crystal structure. These cavities are interconnected by regular, uniform channels on the order of molecular size. These cavities are typically occupied by adsorbed water and water of crystallization, while larger molecules are excluded, hence the name molecular sieve. Molecular sieve dehydration devices utilize the polar hydrophilicity of zeolite molecular sieves; the diameter of water molecules in the gas is smaller than the diameter of the molecular sieve cavities, while the diameter of natural gas component molecules is larger, allowing for gas drying.
[0003] When the molecular sieve dehydration device on the market is in use, the design and filling of the molecular sieve needs to be calculated according to the saturated water vapor at the highest temperature of natural gas, which increases the volume of the drying tower equipment and increases the construction cost. In addition, the molecular sieve cannot adsorb liquid water and heavy hydrocarbons, and needs to be discharged frequently. Heavy hydrocarbons have great economic value, resulting in waste. At the same time, due to the poor front-end separation effect of liquid water and heavy hydrocarbons, the natural gas condenses into liquid due to the lowering of ambient temperature, which greatly aggravates the molecular sieve load and affects the normal dehydration of natural gas. Utility Model Content
[0004] In view of the deficiencies in the prior art, the present invention provides an adsorption drying tower for a natural gas dehydration device, which solves the technical problems raised in the above-mentioned background technology.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an adsorption drying tower for a natural gas dehydration device, comprising a tower shell, a partition fixedly installed in the tower shell, the top of the partition in the tower shell is set as an adsorption chamber, the bottom of the partition in the tower shell is set as a condensation chamber, a number of refrigeration plates fixedly installed in the condensation chamber, the adsorption chamber is filled with a molecular sieve, the top of the molecular sieve is filled with a porcelain ball filling layer, a water storage chamber is provided at the bottom of the tower shell, an air inlet pipe support plate is fixedly installed between the tower shell and the water storage chamber, an air inlet pipe is vertically inserted into the water storage chamber, the top of the air inlet pipe passes through the air inlet pipe support plate and a water retaining cover is installed to the support in the tower shell, one side of the water storage chamber is connected to a drain outlet, the top of the tower shell is connected to an air outlet outlet, the top flange of the air outlet is connected to an air outlet joint, and the bottom flange of the air inlet pipe is connected to an air inlet joint.
[0006] Preferably, the refrigeration fins have a hollow structure, and a plurality of the refrigeration fins are connected by refrigeration pipes, and the left and right sides of the refrigeration pipes pass through the wall of the tower shell and are connected to the water circulation pipes of the refrigerator.
[0007] Preferably, the refrigeration fins are installed in a vertical direction.
[0008] Preferably, the partition is provided with a plurality of air holes, and the air inlet pipe support plate is provided with a plurality of water holes.
[0009] Preferably, the water retaining cover plate is an umbrella-shaped structure.
[0010] Beneficial effects
[0011] The utility model provides an adsorption drying tower for a natural gas dehydration device, which has the following beneficial effects: when the device is in use, the tower first removes most of the liquid water in the natural gas by condensation, and then finely dries it through molecular sieve adsorption, thereby ensuring the drying effect while reducing costs. A water retaining cover is installed on the top of the air inlet pipe to prevent condensed water from flowing back from the air inlet pipe and affecting use. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a structural schematic diagram of an adsorption drying tower for a natural gas dehydration device according to the present invention.
[0013] Figure 2 This is an enlarged schematic diagram of the air inlet structure of an adsorption drying tower used in a natural gas dehydration device described in the present invention.
[0014] In the figure: 1. Tower shell; 2. Partition; 3. Condensation chamber; 4. Refrigeration pipe; 5. Refrigeration plate; 6. Molecular sieve; 7. Ceramic ball filling layer; 8. Adsorption chamber; 9. Air outlet; 10. Air outlet connector; 11. Air inlet connector; 12. Air inlet pipe; 13. Water storage chamber; 14. Air inlet pipe support plate; 15. Drain outlet; 16. Water retaining cover. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0016] See also Figure 1-2The utility model provides a technical solution of an adsorption drying tower for a natural gas dehydration device: an adsorption drying tower for a natural gas dehydration device, comprising a tower shell 1, a partition 2 fixedly installed in the tower shell 1, the top of the partition 2 in the tower shell 1 is set as an adsorption chamber 8, the bottom of the partition 2 in the tower shell 1 is set as a condensation chamber 3, a plurality of refrigeration plates 5 fixedly installed in the condensation chamber 3, the adsorption chamber 8 is filled with a molecular sieve 6, and the top of the molecular sieve 6 is filled with a porcelain ball filling layer 7. A water storage chamber 13 is provided at the bottom of the tower shell 1, an air intake pipe support plate 14 is fixedly installed between the tower shell 1 and the water storage chamber 13, an air intake pipe 12 is vertically inserted into the water storage chamber 13, the top of the air intake pipe 12 passes through the air intake pipe support plate 14 and is provided with a water retaining cover plate 16 to support the tower shell 1, a drain port 15 is connected to one side of the water storage chamber 13, the top of the tower shell 1 is connected to an air outlet 9, the top flange of the air outlet 9 is connected to an air outlet joint 10, and the bottom flange of the air intake pipe 12 is connected to an air intake joint 11.
[0017] Furthermore, the refrigeration fins 5 have a hollow structure, and several refrigeration fins 5 are connected by refrigeration pipes 4. The left and right sides of the refrigeration pipes 4 pass through the wall of the tower shell 1 and are connected to the water circulation pipe of the refrigerator.
[0018] Furthermore, the cooling fins 5 are installed in a vertical direction.
[0019] Furthermore, a plurality of air holes are provided on the partition plate 2 , and a plurality of water holes are provided on the air inlet pipe support plate 14 .
[0020] Furthermore, the water retaining cover plate 16 is an umbrella-shaped structure.
[0021] Example: When the device is in use, the air inlet connector 11 and the air outlet connector 10 are connected to the natural gas inlet and outlet pipes respectively, and the refrigeration pipe 4 is connected to the water circulation inlet and outlet of the refrigerator, so that the refrigerant in the refrigerator can circulate between the refrigeration pipe 4 and the refrigeration plate 5.
[0022] When the refrigerant circulates, the low-temperature refrigerant in the refrigeration plate 5 reduces the surface temperature of the refrigeration plate 5, and the natural gas enters the air inlet pipe 12 from the air inlet joint 11, and then flows from the top through the water retaining cover 16 to enter the condensation chamber 3 from both sides and rise. After the natural gas encounters the refrigeration plate 5, the moisture inside condenses to form droplets that adhere to the surface of the refrigeration plate 5 and fall downward under the action of gravity, and finally gathers in the water storage chamber 13 and is discharged through the drain port 15.
[0023] The water retaining cover 16 installed on the air intake pipe 12 can prevent condensed water from entering the air intake pipe 12 and prevent backflow.
[0024] After condensation and drying, the natural gas enters the adsorption chamber 8 through the air holes of the partition 2, and is adsorbed and dried by the molecular sieve 6. Finally, the dried gas rises and is discharged through the gas outlet 9 and the gas outlet connector 10.
[0025] This device has two drying methods in one tower. First, most of the moisture in the natural gas is removed by condensation, and then fine drying is performed by adsorption, which ensures the drying effect while reducing costs.
[0026] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.
Claims
1. An adsorption drying tower for a natural gas dehydration device, comprising a tower shell (1), characterized in that: A partition (2) is fixedly installed in the tower shell (1), the top of the partition (2) in the tower shell (1) is set as an adsorption chamber (8), the bottom of the partition (2) in the tower shell (1) is set as a condensation chamber (3), a plurality of refrigeration plates (5) are fixedly installed in the condensation chamber (3), the adsorption chamber (8) is filled with a molecular sieve (6), the top of the molecular sieve (6) is filled with a porcelain ball filling layer (7), a water storage chamber (13) is provided at the bottom of the tower shell (1), and a fixed air filter (13) is fixed between the tower shell (1) and the water storage chamber (13). An air intake pipe support plate (14) is installed, an air intake pipe (12) is vertically inserted into the water storage chamber (13), the top of the air intake pipe (12) passes through the air intake pipe support plate (14) and is installed with a water retaining cover plate (16) on the support column inside the tower shell (1), one side of the water storage chamber (13) is connected to a drain port (15), the top of the tower shell (1) is connected to an air outlet (9), the top flange of the air outlet (9) is connected to an air outlet joint (10), and the bottom flange of the air intake pipe (12) is connected to an air intake joint (11).
2. The adsorption drying tower for a natural gas dehydration device according to claim 1, characterized in that: The refrigeration fins (5) have a hollow structure, and a plurality of the refrigeration fins (5) are connected by refrigeration pipes (4). The left and right sides of the refrigeration pipes (4) pass through the wall of the tower shell (1) and are connected to the water circulation pipe of the refrigerator.
3. The adsorption drying tower for a natural gas dehydration device according to claim 1, characterized in that: The refrigeration fins (5) are installed in a vertical direction.
4. The adsorption drying tower for a natural gas dehydration device according to claim 1, characterized in that: The partition plate (2) is provided with a plurality of air holes, and the air inlet pipe support plate (14) is provided with a plurality of water holes.
5. The adsorption drying tower for a natural gas dehydration device according to claim 1, characterized in that: The water retaining cover plate (16) is an umbrella-shaped structure.