CN210103865U - Dehydration sled - Google Patents
Dehydration sled Download PDFInfo
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- CN210103865U CN210103865U CN201920685976.5U CN201920685976U CN210103865U CN 210103865 U CN210103865 U CN 210103865U CN 201920685976 U CN201920685976 U CN 201920685976U CN 210103865 U CN210103865 U CN 210103865U
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Abstract
The utility model provides a dehydration sled, including air inlet, leading filter, first drain sump, second drain sump, rearmounted filter, gas outlet, regenerative filter, natural gas compressor, heater, cooler, vapour and liquid separator, liquid storage pot, blow off pipe, temperature-detecting device, valve, sled seat, pipeline. The dehydration tank of the utility model comprises a plurality of molecular sieve dehydration tanks, the number of the molecular sieve dehydration tanks is adjusted according to the gas flux of the gas demand for the regional natural gas, so that the dehydration pry can match with the adjustment of the load capacity of the natural gas receiving station to change the number of the molecular sieve dehydration tanks while meeting the dehydration performance, thereby saving the cost; the molecular sieve dehydration box adopts the upper partition plate and the lower partition plate which are arranged at intervals, so that a circuitous gas path is formed in the molecular sieve dehydration box by natural gas, the contact area and the contact time of the natural gas and a molecular sieve drying agent are increased, and the dehydration efficiency and the dehydration effect are improved.
Description
Technical Field
The utility model belongs to the technical field of the natural gas dehydration, especially, relate to a dehydration sled.
Background
Natural gas from exploitation to commodity needs to be subjected to a series of processing treatments to remove impurities such as water and sulfur contained in the natural gas. The presence of water in natural gas can cause great harm to the quality of the natural gas, so that the natural gas dehydration process becomes an important part in natural gas processing. The currently widely adopted natural gas dehydration process comprises dry dehydration and wet dehydration, wherein the dry dehydration mainly comprises dehydration by a molecular sieve adsorption method, and the wet dehydration mainly comprises dehydration by a glycol absorption method. At present, the construction amount of small and medium-sized natural gas receiving stations rises year by year, the natural gas receiving stations have different magnitudes of requirements on natural gas storage according to the requirements of the regions, and for a part of regions with less requirements but rising space, small natural gas dehydration equipment which is put into use at an early stage can meet the current requirements, but limits the later development, and resource waste can be caused by adopting dehydration equipment with higher gas flux at an early stage.
Disclosure of Invention
In view of this, the utility model aims at providing a dehydration sled to solve middle-size and small-size natural gas receiving station dewatering equipment later stage development and receive restriction and the extravagant problem of resource.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a dehydration pry comprises an air inlet, a pre-filter, a first adsorption air inlet valve, a second adsorption air inlet valve, a first adsorption air outlet valve, a second adsorption air outlet valve, a first dehydration tank, a second dehydration tank, a post-filter, an air outlet, a first regeneration air inlet valve, a second regeneration air inlet valve, a first regeneration air outlet valve, a second regeneration air outlet valve, a regeneration filter, a natural gas compressor, a heater, a cooler, a gas-liquid separator, a liquid storage tank, a blow-off pipe, a first regeneration control valve, a second regeneration control valve, a temperature detection device, a pry seat and a pipeline; the air inlet, the pre-filter, the first dehydration tank, the second dehydration tank, the post-filter, the air outlet, the regenerative filter, the natural gas compressor, the heater, the cooler, the gas-liquid separator, the liquid storage tank and the blow-off pipe are arranged on the prying seat;
the dehydration tank comprises a tank body, an upper air port, a lower air port, a molecular sieve dehydration box and a molecular sieve drying agent, wherein the upper air port and the lower air port are respectively arranged at the top end and the bottom end of the tank body; the molecular sieve dehydration box comprises a box body, a wet air port, a dry air port and a steel wire mesh, wherein the wet air port is arranged at the top end of the box body, the dry air port is arranged at the bottom end of the box body, and the wet air port and the dry air port are arranged at the opposite angles of the box body; the wet gas port and the dry gas port are provided with steel wire meshes, and the molecular sieve dehydration box is filled with the molecular sieve drying agent; the wet air port of the molecular sieve dehydration box is communicated with the upper air port, and the dry air port of the molecular sieve dehydration box is communicated with the lower air port; a mounting maintenance door is arranged on the side surface of the tank body;
the two ends of the first dehydration tank and the second dehydration tank are communicated with a dehydration pipeline and a regeneration pipeline, the dehydration pipeline of the first dehydration tank is formed by sequentially communicating the air inlet, the pre-filter, the first adsorption air inlet valve, the first dehydration tank, the first adsorption air outlet valve, the post-filter and the air outlet, and the dehydration pipeline of the second dehydration tank is formed by sequentially communicating the air inlet, the pre-filter, the second adsorption air inlet valve, the second dehydration tank, the second adsorption air outlet valve, the post-filter and the air outlet; the regeneration pipeline of the first dehydration tank is formed by sequentially communicating the second adsorption gas outlet valve, the first regeneration control valve, the regeneration filter, the natural gas compressor, the heater, the first regeneration gas inlet valve, the first dehydration tank, the first regeneration gas outlet valve, the cooler, the gas-liquid separator, the second regeneration control valve and the second adsorption gas inlet valve, and the regeneration pipeline of the second dehydration tank is formed by sequentially communicating the first adsorption gas outlet valve, the first regeneration control valve, the regeneration filter, the natural gas compressor, the heater, the second regeneration gas inlet valve, the second dehydration tank, the second regeneration gas outlet valve, the cooler, the gas-liquid separator, the second regeneration control valve and the first adsorption gas inlet valve; the lower end outlet of the gas-liquid separator is communicated with the inlet of the liquid storage tank, and the outlet of the liquid storage tank and the lower end outlet of the pre-filter are communicated with the outside through the drain pipe; the temperature detection devices are respectively arranged at the heater outlet and the cooler inlet.
Furthermore, the number of the molecular sieve dehydration boxes is 1-4, and the molecular sieve dehydration boxes are longitudinally arranged in the tank body; the wet gas port of the molecular sieve dewatering box positioned at the uppermost end in the tank body is communicated with the upper gas port, the dry gas port of the molecular sieve dewatering box positioned above is communicated with the wet gas port of the molecular sieve dewatering box positioned below, and the dry gas port of the molecular sieve dewatering box positioned at the lowermost end in the tank body is communicated with the lower gas port.
The number of the molecular sieve dehydration tanks is determined according to the gas flux of natural gas in the dehydration process, when the gas flux is high, the number of the molecular sieve dehydration tanks is 3-4, and when the gas flux is low, the number of the molecular sieve dehydration tanks is 1-2. The number of molecular sieve dewatering boxes in the first dewatering tank and the second dewatering tank remains the same.
Furthermore, the molecular sieve dewatering box comprises an upper partition plate and a lower partition plate, the upper edge and the two side edges of the upper partition plate are in seamless connection with the inner wall of the box body, a gap is reserved between the lower edge of the upper partition plate and the bottom plate of the box body, the lower edge and the two side edges of the lower partition plate are in seamless connection with the inner wall of the box body, a gap is reserved between the upper edge of the lower partition plate and the top plate of the box body, the upper partition plate and the lower partition plate are arranged at intervals, the partition plate closest to the wet air port is the upper partition plate, and the partition plate closest to the dry air port is the lower partition plate.
Further, the molecular sieve drying agent is aluminosilicate spherical monomer.
Further, a diffusion safety valve and a diffusion pipe are arranged at the outlet of the gas-liquid separator, and the diffusion safety valve is communicated with the outside through the diffusion pipe. The diffusion safety valve and the diffusion pipe have the function that when the gas pressure at the outlet of the cooler is greater than the set gas pressure of the diffusion safety valve, the diffusion safety valve is automatically opened to discharge gas to the outside through the diffusion pipe, so that the effect of reducing the gas pressure in the pipe is achieved.
Furthermore, a first check valve is arranged at the inlet of the first regeneration control valve, and a second check valve is arranged at the outlet of the second regeneration control valve. The first check valve and the second check valve function to prevent gas from flowing backward.
Further, the pre-filter is an activated carbon filter, and the post-filter and the regeneration filter are particulate filters. The activated carbon filter is used to remove solid and liquid phase contaminants, hydrocarbons, gas well treatment chemicals, compressor oil and other contaminants, and the particulate filter is used to remove desiccant dust, solid phase contaminants and equipment corrosion products.
Further, the heater is an electric heater, and the cooler is an air cooler.
Furthermore, the natural gas compressor is provided with a flow regulating valve, the inlet of the flow regulating valve is communicated with the outlet of the natural gas compressor, and the outlet of the flow regulating valve is communicated with the inlet of the natural gas compressor. And the flow regulating valve controls the flow of the natural gas compressor by regulating the opening of the return valve.
Further, the temperature detection device is a pipeline thermometer or a temperature transmitter. The temperature transmitter is connected with the computer control terminal, converts temperature information into digital signals and sends the digital signals to the computer control terminal, and the computer control terminal controls the opening and closing of the heater and the cooler.
The dehydration pry realizes the switching between the dehydration process and the regeneration process by controlling valves at two ends of the first dehydration tank and the second dehydration tank; the natural gas compressor is used for pressurizing natural gas regeneration gas in the regeneration pipeline to promote the flow of the gas circuit; the heater is used for heating natural gas regenerated gas, and the heated natural gas regenerated gas enters the dehydration tank to evaporate water in the molecular sieve drying agent and take the water out of the molecular sieve drying agent; the cooler is used for cooling the natural gas regeneration gas output from the dehydration tank, and the water vapor in the natural gas regeneration gas enters the gas-liquid separator for gas-liquid separation after being cooled and liquefied; the gas-liquid separator is used for gas-liquid phase separation after the cooler, the separated liquid flows out through an outlet at the lower end of the gas-liquid separator, and the separated natural gas is conveyed to a dewatering pipeline; the liquid storage tank is used for temporarily storing the separated liquid water, so that the subsequent discharge management is facilitated; the temperature detection device is used for detecting the temperature of the natural gas regeneration gas at the outlet of the heater and the inlet of the cooler; the steel wire mesh is used for preventing the molecular sieve drying agent from entering a natural gas pipeline, so that pipeline blockage is avoided; the installation maintenance door is used for increasing and decreasing the number of the molecular sieve dewatering boxes in the later period, and overhauling and maintaining.
Compared with the prior art, a dehydration sled have following advantage:
(1) the number of the molecular sieve dehydration boxes is adjusted according to the gas flux of the gas demand for the natural gas in the area, 1-2 molecular sieve dehydration boxes are adopted for the area with low gas flux requirement, and 3-4 molecular sieve dehydration boxes are adopted for the area with high gas flux requirement to be connected in series for use, so that the dehydration pry can meet the dehydration performance, and meanwhile, the number of the molecular sieve dehydration boxes can be changed by matching with the adjustment of the load capacity of the natural gas receiving station, and the cost is saved; the regeneration filter filters out desiccant dust, solid-phase impurities and equipment corrosion products, so that normal operation of the natural gas compressor can be effectively protected, and reliability is improved.
(2) The drain sump be the molecular sieve drain box, the molecular sieve drain box adopts go up the baffle and set up with lower baffle interval, make the natural gas form circuitous gas circuit in the molecular sieve drain box, increase the area of contact and the contact time of natural gas and molecular sieve drier, improve dehydration efficiency and dehydration effect.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 is a schematic diagram of the internal structure of a dewatering tank containing 4 molecular sieve dewatering boxes according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a molecular sieve dewatering box according to an embodiment of the present invention;
FIG. 3 is a schematic view of a process flow of a dewatering pry according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the internal structure of a dewatering tank containing 3 molecular sieve dewatering boxes according to an embodiment of the present invention;
FIG. 5 is a schematic view of the internal structure of a dewatering tank containing 2 molecular sieve dewatering boxes according to an embodiment of the present invention;
fig. 6 is a schematic view of the internal structure of a dewatering tank containing 1 molecular sieve dewatering box according to an embodiment of the present invention.
Description of reference numerals:
1-an air inlet; 2-a pre-filter; 301-a first adsorption air intake valve; 302-a second adsorption air intake valve; 401-a first adsorption gas outlet valve; 402-a second adsorption gas outlet valve; 51-a first dewatering tank; 52-a second dewatering tank; 501-tank body; 502-upper air port; 503-lower air port; 6-molecular sieve dewatering box; 601-molecular sieve desiccant; 602-a box body; 603-dehydration box wet gas port; 604-dehydration box dry gas port; 605-steel wire mesh; 606-upper baffle plate; 607-lower spacer; 7-post filter; 8-air outlet; 901-first regenerative air admission valve; 902-a second regenerative intake valve; 1001-first regeneration air outlet valve; 1002-a second regenerative gas outlet valve; 11-a regenerative filter; 12-natural gas compressor; 13-a heater; 14-a cooler; 15-gas-liquid separator; 16-a liquid storage tank; 17-a sewage draining pipe; 1801 — first regeneration control valve; 1802-a second regeneration control valve; 19-temperature detection means; 20-a relief valve; 21-a diffusing pipe; 2201-a first check valve; 2202-a second check valve; 23-a flow regulating valve; 24-installing the maintenance door.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
A dehydration pry comprises an air inlet 1, a pre-filter 2, a first adsorption air inlet valve 301, a second adsorption air inlet valve 302, a first adsorption air outlet valve 401, a second adsorption air outlet valve 402, a first dehydration tank 51, a second dehydration tank 52, a post-filter 7, an air outlet 8, a first regeneration air inlet valve 901, a second regeneration air inlet valve 902, a first regeneration air outlet valve 1001, a second regeneration air outlet valve 1002, a regeneration filter 11, a natural gas compressor 12, a heater 13, a cooler 14, a gas-liquid separator 15, a liquid storage tank 16, a drain pipe 17, a first regeneration control valve 1801, a second regeneration control valve 1802, a temperature detection device 19, a pry seat and a pipeline; the air inlet 1, the pre-filter 2, the first dewatering tank 51, the second dewatering tank 52, the post-filter 7, the air outlet 8, the regeneration filter 11, the natural gas compressor 12, the heater 13, the cooler 14, the gas-liquid separator 15, the liquid storage tank 16 and the sewage discharge pipe 17 are arranged on the prying seat; the first dewatering tank 51 and the second dewatering tank 52 are the same in structure;
the dehydration tank comprises a tank body 501, an upper air port 502, a lower air port 503, a molecular sieve dehydration tank 6 and a molecular sieve desiccant 601, wherein the upper air port 502 and the lower air port 503 are respectively arranged at the top end and the bottom end of the tank body 501, the number of the molecular sieve dehydration tank 6 is 4, and as shown in fig. 1, the molecular sieve dehydration tank 6 is longitudinally arranged in the tank body 501; the molecular sieve dewatering box 6 comprises a box body 602, a wet air port 603, a dry air port 604 and a steel wire mesh 605, wherein the wet air port 603 and the dry air port 604 are provided with the steel wire mesh 605, and as shown in fig. 2, a molecular sieve drying agent 601 is filled in the molecular sieve dewatering box 6; the wet gas port 603 of the uppermost molecular sieve dewatering box 6 is communicated with the upper gas port 502; the dry gas port 604 of the molecular sieve dewatering box 6 positioned above is communicated with the wet gas port 603 of the molecular sieve dewatering box 6 positioned below; the dry gas port 604 of the molecular sieve dewatering box 6 at the lowest end is communicated with the lower gas port 503; a mounting maintenance door 24 is arranged on the side surface of the tank body 501;
both ends of the first dewatering tank 51 and the second dewatering tank 52 are communicated with a dewatering pipeline and a regeneration pipeline, as shown in fig. 3, the dewatering pipeline of the first dewatering tank 51 is formed by sequentially communicating the air inlet 1, the pre-filter 2, the first adsorption air inlet valve 301, the first dewatering tank 51, the first adsorption air outlet valve 401, the post-filter 7 and the air outlet 8, and the dewatering pipeline of the second dewatering tank 52 is formed by sequentially communicating the air inlet 1, the pre-filter 2, the second adsorption air inlet valve 302, the second dewatering tank 52, the second adsorption air outlet valve 402, the post-filter 7 and the air outlet 8; the regeneration pipeline of the first dewatering tank 51 is formed by sequentially communicating the second adsorption gas outlet valve 402, the first regeneration control valve 1801, the regeneration filter 11, the natural gas compressor 12, the heater 13, the first regeneration gas inlet valve 901, the first dewatering tank 51, the first regeneration gas outlet valve 1001, the cooler 14, the gas-liquid separator 15, the second regeneration control valve 1802 and the second adsorption gas inlet valve 302, and the regeneration pipeline of the second dewatering tank 52 is formed by sequentially communicating the first adsorption gas outlet valve 401, the first regeneration control valve 1801, the regeneration filter 11, the natural gas compressor 12, the heater 13, the second regeneration gas inlet valve 902, the second dewatering tank 52, the second regeneration gas outlet valve 1002, the cooler 14, the gas-liquid separator 15, the second regeneration control valve 1802 and the first adsorption gas inlet valve 301; the outlet at the lower end of the gas-liquid separator 15 is communicated with the inlet of the liquid storage tank 16, and the outlet of the liquid storage tank 16 is communicated with the outlet at the lower end of the pre-filter 2 through the blow-off pipe 17; the temperature detection devices 19 are respectively arranged at the outlet of the heater 13 and the inlet of the cooler 14; a relief safety valve 20 and a relief pipe 21 are arranged at the outlet of the gas-liquid separator 15, and the relief safety valve 20 is communicated with the outside through the relief pipe 21; a first check valve 2201 is arranged at the inlet of the first regeneration control valve 1801, and a second check valve 2202 is arranged at the outlet of the second regeneration control valve 1802; the natural gas compressor 12 is provided with a flow regulating valve 23, an inlet of the flow regulating valve 23 is communicated with an outlet of the natural gas compressor 12, and an outlet of the flow regulating valve 23 is communicated with an inlet of the natural gas compressor 12.
The pre-filter 2 is an activated carbon filter, and the post-filter 7 and the regeneration filter 11 are particulate filters; the heater is an electric heater, and the cooler is an air cooler.
The molecular sieve dewatering box 6 comprises a plurality of upper partition plates 606 and a plurality of lower partition plates 607, as shown in fig. 2, the upper edges and two side edges of the upper partition plates 606 are seamlessly connected with the inner wall of the box body 602, a gap is reserved between the lower edges of the upper partition plates 606 and the bottom plate of the box body 602, the lower edges and two side edges of the lower partition plates 607 are seamlessly connected with the inner wall of the box body 602, a gap is reserved between the upper edges of the lower partition plates 607 and the top plate of the box body 602, the upper partition plates 606 and the lower partition plates 607 are arranged at intervals, the partition plates closest to the wet gas ports 603 are the upper partition plates 606, and the partition plates closest to the dry gas ports 604 are the lower partition plates.
The dehydration-regeneration process conversion of the dehydration tanks can be carried out between the two dehydration tanks of the dehydration skid, namely, the dehydration process is carried out from the first dehydration tank, the regeneration process is carried out from the second dehydration tank, the dehydration process is converted into the regeneration process carried out by the first dehydration tank, and the dehydration process is carried out by the second dehydration tank; the dewatering pry is used in the following states:
(1) the first dewatering tank carries out the dewatering process, and the second dewatering tank carries out the regeneration process:
controlling the state of the valve: opening a first adsorption air inlet valve 301, a first adsorption air outlet valve 401, a second regeneration air inlet valve 902, a second regeneration air outlet valve 1002, a first regeneration control valve 1801 and a second regeneration control valve 1802; the second adsorption air inlet valve 302, the second adsorption air outlet valve 402, the first regeneration air inlet valve 901 and the first regeneration air outlet valve 1001 are closed.
As shown in fig. 3, the natural gas enters the pre-filter 2 through the gas inlet 1, after solid-phase and liquid-phase impurities in the natural gas are filtered, the natural gas enters the first dehydration tank 51 for a dehydration process, the dehydrated natural gas is output from the first dehydration tank 51, a part of the dehydrated natural gas enters the natural gas pipeline network through the gas outlet 8 after solid-phase impurities such as desiccant dust and the like are filtered out through the post-filter 7, the other part of the dehydrated natural gas enters the natural gas compressor 12 after solid-phase impurities such as desiccant dust and the like are filtered out through the regeneration filter 11, the dehydrated natural gas pressurized by the natural gas compressor 12 enters the heater 13 for heating, and the heated high-temperature natural gas enters the second dehydration tank 52 for a regeneration; the water molecules in the molecular sieve drying agent 601 are heated and evaporated into gas-phase water molecules by high-temperature natural gas, the gas-phase water molecules are carried out of the second dehydration tank 52 along with the high-temperature natural gas, the high-temperature natural gas containing the gas-phase water molecules enters the cooler 14 to be cooled, the gas-phase water molecules are cooled and liquefied into water drops, then the water drops are subjected to gas-liquid phase separation by the gas-liquid separator 15, the separated gas-phase natural gas returns to the first dehydration tank 51 through a pipeline to be subjected to a dehydration procedure, the separated liquid-phase water flows out of an outlet at the lower end of the gas-liquid separator 15 and enters the liquid storage tank 16, and the liquid-phase water in the liquid storage tank 16.
(2) The first dewatering tank carries out the regeneration process, and the second dewatering tank carries out the dehydration process:
controlling the state of the valve: opening a second adsorption air inlet valve 302, a second adsorption air outlet valve 402, a first regeneration air inlet valve 901, a first regeneration air outlet valve 1001, a first regeneration control valve 1801 and a second regeneration control valve 1802; the first adsorption air inlet valve 301, the first adsorption air outlet valve 401, the second regeneration air inlet valve 902 and the second regeneration air outlet valve 1002 are closed.
As shown in fig. 3, the natural gas enters the pre-filter 2 through the gas inlet 1, after solid-phase and liquid-phase impurities in the natural gas are filtered, the natural gas enters the second dehydration tank 52 for a dehydration process, the dehydrated natural gas is output from the second dehydration tank 52, a part of the dehydrated natural gas enters the natural gas pipe network through the gas outlet 8 after solid-phase impurities such as desiccant dust are filtered out through the post-filter 7, the other part of the dehydrated natural gas enters the natural gas compressor 12 after solid-phase impurities such as desiccant dust are filtered out through the regeneration filter 11, the dehydrated natural gas pressurized by the natural gas compressor 12 enters the heater 13 for heating, and the heated high-temperature natural gas enters the first dehydration tank 51 for a regeneration process; the water molecules in the molecular sieve drying agent 601 are heated and evaporated into gas-phase water molecules through high-temperature natural gas, the gas-phase water molecules are taken out of the first dehydration tank 51 along with the high-temperature natural gas, the high-temperature natural gas containing the gas-phase water molecules enters the cooler 14 to be cooled, the gas-phase water molecules are cooled and liquefied into water drops, then the water drops are subjected to gas-liquid phase separation through the gas-liquid separator 15, the separated gas-phase natural gas returns to the second dehydration tank 52 through a pipeline to be subjected to a dehydration process, the separated liquid-phase water flows out of an outlet at the lower end of the gas-liquid separator 15 and enters the liquid storage tank 16, and the liquid-phase water in the liquid storage tank 16 and.
The temperature detection device 19 is a pipeline thermometer or a temperature transmitter. When the temperature detection device 19 is a pipeline temperature meter, the control flow of the regeneration process of the dewatering pry is as follows:
the gas temperatures at the outlet of the heater 13 and the inlet of the cooler 14 are detected by the line thermometer of the temperature detection device 19, and the operator acquires temperature information by displaying on the dial of the line thermometer. In the process of heating the heater 13, if the temperature of the gas at the outlet of the heater 13 rises too slowly (less than 5 ℃/min), the opening degree of the flow regulating valve 23 is increased moderately; if the temperature of the gas at the outlet of the heater 13 rises too fast (more than 15 ℃/min), the opening degree of the flow regulating valve 23 is appropriately reduced. When the temperature of the gas at the outlet of the heater 13 reaches 40 ℃, the operator turns on the cooler 14. When the temperature of the gas at the outlet of the heater 13 is maintained at 200 ℃ and the temperature of the gas at the inlet of the cooler 14 reaches 120 ℃, the heater is turned off by an operator, when the temperature of the gas at the inlet of the cooler 14 is reduced to 40 ℃, the regeneration process is completed, and the operator can perform the conversion operation of the dehydration-regeneration process of the dehydration tank.
When the temperature detection device 19 is a temperature transmitter, the control flow of the regeneration process of the dewatering pry is as follows:
the temperature of the gas at the outlet of the heater 13 and at the inlet of the cooler 14 is detected by the temperature transmitter of the temperature detection device 19, the temperature transmitter converts the temperature information into digital signals and sends the digital signals to the computer control terminal, and the temperature information can be acquired and monitored by an operator through the computer control terminal. In the process of heating the heater 13, if the temperature of the gas at the outlet of the heater 13 rises too slowly (less than 5 ℃/min), the operator appropriately increases the opening of the flow regulating valve 23; if the temperature of the gas at the outlet of the heater 13 rises too fast (more than 15 ℃/min), the operator appropriately reduces the opening of the flow rate adjusting valve 23. And the computer control terminal controls the opening and closing of the heater 13 and the cooler 14 after receiving the temperature information of the gas at the outlet of the heater 13 and the gas at the inlet of the cooler 14. When the temperature of the gas at the outlet of the heater 13 reaches 40 ℃, the computer control terminal controls the cooler 14 to be started. When the temperature of the gas at the outlet of the heater 13 is maintained at 200 ℃ and the temperature of the gas at the inlet of the cooler 14 reaches 120 ℃, the computer control terminal controls the heater to be closed; when the temperature of the gas at the inlet of the cooler 14 is reduced to 40 ℃, the regeneration process is finished, and the computer control terminal prompts an operator to carry out the conversion operation of the dehydration-regeneration process of the dehydration tank.
Maintenance and installation operations are carried out on the molecular sieve dewatering box in the dewatering tank through the installation maintenance door 24; according to the actual air supply demand, increase and decrease molecular sieve dewatering box quantity in the dewatering tank: when the gas supply demand is increased and the gas flux is high, the number of the molecular sieve dewatering boxes is 4 or 3, as shown in figures 1 and 4, and when the gas supply demand is reduced and the gas flux is low, the number of the molecular sieve dewatering boxes is 2 or 1, as shown in figures 5 and 6; the number of molecular sieve dewatering boxes in the first dewatering tank and the second dewatering tank remains the same.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dehydration sled which is characterized in that: the device comprises an air inlet, a pre-filter, a first adsorption air inlet valve, a second adsorption air inlet valve, a first adsorption air outlet valve, a second adsorption air outlet valve, a first dehydration tank, a second dehydration tank, a post-filter, an air outlet, a first regeneration air inlet valve, a second regeneration air inlet valve, a first regeneration air outlet valve, a second regeneration air outlet valve, a regeneration filter, a natural gas compressor, a heater, a cooler, a gas-liquid separator, a liquid storage tank, a drain pipe, a first regeneration control valve, a second regeneration control valve, a temperature detection device, a prying seat and a pipeline; the air inlet, the pre-filter, the first dehydration tank, the second dehydration tank, the post-filter, the air outlet, the regenerative filter, the natural gas compressor, the heater, the cooler, the gas-liquid separator, the liquid storage tank and the blow-off pipe are arranged on the prying seat;
the dehydration tank comprises a tank body, an upper air port, a lower air port, a molecular sieve dehydration box and a molecular sieve drying agent, wherein the upper air port and the lower air port are respectively arranged at the top end and the bottom end of the tank body; the molecular sieve dehydration box comprises a box body, a wet air port, a dry air port and a steel wire mesh, wherein the wet air port is arranged at the top end of the box body, the dry air port is arranged at the bottom end of the box body, and the wet air port and the dry air port are arranged at the opposite angles of the box body; the wet gas port and the dry gas port are provided with steel wire meshes, and the molecular sieve dehydration box is filled with the molecular sieve drying agent; the wet air port of the molecular sieve dehydration box is communicated with the upper air port, and the dry air port of the molecular sieve dehydration box is communicated with the lower air port; a mounting maintenance door is arranged on the side surface of the tank body;
the two ends of the first dehydration tank and the second dehydration tank are communicated with a dehydration pipeline and a regeneration pipeline, the dehydration pipeline of the first dehydration tank is formed by sequentially communicating the air inlet, the pre-filter, the first adsorption air inlet valve, the first dehydration tank, the first adsorption air outlet valve, the post-filter and the air outlet, and the dehydration pipeline of the second dehydration tank is formed by sequentially communicating the air inlet, the pre-filter, the second adsorption air inlet valve, the second dehydration tank, the second adsorption air outlet valve, the post-filter and the air outlet; the regeneration pipeline of the first dehydration tank is formed by sequentially communicating the second adsorption gas outlet valve, the first regeneration control valve, the regeneration filter, the natural gas compressor, the heater, the first regeneration gas inlet valve, the first dehydration tank, the first regeneration gas outlet valve, the cooler, the gas-liquid separator, the second regeneration control valve and the second adsorption gas inlet valve, and the regeneration pipeline of the second dehydration tank is formed by sequentially communicating the first adsorption gas outlet valve, the first regeneration control valve, the regeneration filter, the natural gas compressor, the heater, the second regeneration gas inlet valve, the second dehydration tank, the second regeneration gas outlet valve, the cooler, the gas-liquid separator, the second regeneration control valve and the first adsorption gas inlet valve; the lower end outlet of the gas-liquid separator is communicated with the inlet of the liquid storage tank, and the outlet of the liquid storage tank and the lower end outlet of the pre-filter are communicated with the outside through the drain pipe; the temperature detection devices are respectively arranged at the heater outlet and the cooler inlet.
2. A dewatering skid as defined in claim 1, wherein: the number of the molecular sieve dehydration boxes is 1-4, and the molecular sieve dehydration boxes are arranged in the tank body in a longitudinal mode; the wet gas port of the molecular sieve dewatering box positioned at the uppermost end in the tank body is communicated with the upper gas port, the dry gas port of the molecular sieve dewatering box positioned above is communicated with the wet gas port of the molecular sieve dewatering box positioned below, and the dry gas port of the molecular sieve dewatering box positioned at the lowermost end in the tank body is communicated with the lower gas port.
3. A dewatering skid as defined in claim 1 or claim 2, wherein: the molecular sieve dewatering box comprises an upper partition plate and a lower partition plate, wherein the upper edge and the two side edges of the upper partition plate are in seamless connection with the inner wall of the box body, a gap is reserved between the lower edge of the upper partition plate and the bottom plate of the box body, the lower edge and the two side edges of the lower partition plate are in seamless connection with the inner wall of the box body, a gap is reserved between the upper edge of the lower partition plate and the top plate of the box body, the upper partition plate and the lower partition plate are arranged at intervals, the partition plate closest to a wet air port is the upper partition plate, and the partition plate closest to a dry air port is the lower.
4. A dewatering skid as defined in claim 1, wherein: the molecular sieve drying agent is an aluminosilicate spherical monomer.
5. A dewatering skid as defined in claim 1, wherein: and the outlet of the gas-liquid separator is provided with a diffusion safety valve and a diffusion pipe, and the diffusion safety valve is communicated with the outside through the diffusion pipe.
6. A dewatering skid as defined in claim 1, wherein: and a first check valve is arranged at the inlet of the first regeneration control valve, and a second check valve is arranged at the outlet of the second regeneration control valve.
7. A dewatering skid as defined in claim 1, wherein: the pre-filter is an activated carbon filter, and the post-filter and the regeneration filter are particulate filters.
8. A dewatering skid as defined in claim 1, wherein: the heater is an electric heater, and the cooler is an air cooler.
9. A dewatering skid as defined in claim 1, wherein: the natural gas compressor is provided with a flow regulating valve, the inlet of the flow regulating valve is communicated with the outlet of the natural gas compressor, and the outlet of the flow regulating valve is communicated with the inlet of the natural gas compressor.
10. A dewatering skid as defined in claim 1, wherein: the temperature detection device is a pipeline thermometer or a temperature transmitter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920685976.5U CN210103865U (en) | 2019-05-14 | 2019-05-14 | Dehydration sled |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920685976.5U CN210103865U (en) | 2019-05-14 | 2019-05-14 | Dehydration sled |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214098A (en) * | 2022-01-14 | 2022-03-22 | 浙江机电职业技术学院 | High-reliability heating regenerated natural gas molecular sieve dehydration pry |
| CN114688455A (en) * | 2022-05-31 | 2022-07-01 | 沈阳工业安装工程股份有限公司 | Spherical storage tank with uniformly stressed shell |
| CN114832438A (en) * | 2022-05-31 | 2022-08-02 | 成都格莱高科技有限公司 | Dehydration treatment equipment for anhydrous acetonitrile and treatment process thereof |
-
2019
- 2019-05-14 CN CN201920685976.5U patent/CN210103865U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214098A (en) * | 2022-01-14 | 2022-03-22 | 浙江机电职业技术学院 | High-reliability heating regenerated natural gas molecular sieve dehydration pry |
| CN114688455A (en) * | 2022-05-31 | 2022-07-01 | 沈阳工业安装工程股份有限公司 | Spherical storage tank with uniformly stressed shell |
| CN114832438A (en) * | 2022-05-31 | 2022-08-02 | 成都格莱高科技有限公司 | Dehydration treatment equipment for anhydrous acetonitrile and treatment process thereof |
| CN114688455B (en) * | 2022-05-31 | 2023-10-31 | 沈阳工业安装工程股份有限公司 | Spherical storage tank with uniform stress on shell |
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