CN205137069U - Active carbon adsorption formula natural gas storage tank - Google Patents

Abstract

The utility model relates to an active carbon adsorption formula natural gas storage tank, the bilayer structure of the spherical jar body in cylindrical two and cylindrical cooling outer jacket casing in the middle of it has, it comprises with sinuous coil gas holder main part and cooling outer jacket casing and cooling, mainly by charge and discharge ports, adsorbent activity charcoal inlet port, coolant outlet, for the cooling sinuous coil, gas holder main part, cool off the outer jacket casing, cooling water inlet constitutes. All has set up cooling device outside the jar inner tank, has set up the cooling in the gas holder main part and use sinuous coil, set up cooling outer jacket outside the gas holder main part, gas holder main part and cooling outer jacket the upper portion welding of the jar body together, sinuous coil's one end is in jar body top and the switch -on of cooling outer jacket, the other end connects out from the upper portion of jar personally experiencing sth. Part of the body. When the gas holder was aerifyd, cooling water from outer jacket import inflow was flowed from the sinuous coil export, takes away the heat that active carbon adsorption natural gas process produced, avoids the rising of active carbon temperature and reduces its adsorption efficiency.

Description

A kind of active carbon adsorption formula natural gas storage tank

One, technical field

The utility model relates to the equipment of adsorption storage rock gas, especially a kind of active carbon adsorption formula natural gas storage tank.

Two, background technique

At present, the storing mode of rock gas mainly contains three kinds: compressed natural gas (CNG), LNG Liquefied natural gas (LNG) and absorbed natural gas (ANG).CNG is the technology be stored in by natural gas compressing in high-pressure bottle, it is the main storage mode of current vehicle-mounted rock gas, because compressed natural gas used as vehicle fuel pressure is up to 20 ~ 25MPa, its air cylinder belongs to ultrahigh pressure vessel, not only bottle from great, no matter air cylinder is domestic or import, and its price is all difficult to make user bear, and has certain potentially danger.In addition, compressed natural gas used as vehicle fuel requires very high to gas station, and require the pressure reaching 20 ~ 25MPa, must have been come by the high pressure compressor of multistage compression, it not only increases cost, and needs higher energy consumption.LNG is by the technology of natural gas storing under ultra low temperature state (-162 DEG C, 1atm), needs super low temperature refrigeration condition, energy consumption is high, and the maintenance of gas storage facility maintenance is more complicated, and liquefaction process is complicated, fill tank inconvenience, equipment manufacturing cost is high, and operating cost is also higher.What these all constrained gas-fueled vehicles undoubtedly applies process.If natural gas used for automobile air cylinder Pressure Drop to 3 ~ 4MPa, that is compression natural gas-storing is changed into adsorption storage rock gas, and its gas-storing capacity does not reduce, then many difficult problems of gas-fueled vehicles and gas station thereof all will be readily solved, and gas-fueled vehicles will be developed faster.Adsorption storage rock gas (ANG) technology is exactly the rock gas Special adsorbent loading high-specific surface area in storage tank, the specific surface area utilizing it huge and flourishing microcellular structure, under normal temperature, middle pressure (3.5 ~ 6.0MPa), make absorbed natural gas ANG have the storage density close with compressed natural gas CNG, realize the technology of high density adsorption storage, when pressure in storage tank is lower than the external world, gas be attracted to adsorbent solids micropore surface and so as to store; When during the pressure in the external world is lower than storage tank during pressure, gas goes out from adsorbent solids surface desorption that supply is extraneous to be used.At normal temperatures, pressure is under 3.5MPa, every M ³the gas tank that super-activated carbon is housed can hold 120 ~ 170M ³rock gas.The major advantage of ANG gas storage technology shows: can obtain higher storage density when middle pressure (3.5 ~ 6.0MPa), to gas storage and pressurized equipment withstand voltage properties less demanding, cost is low, aerating equipment only needs intermediate pressure compressor or utilizes the discharge pressure of long distance pipeline, saves the expense of building a station of gas station; Gas storage pressure is lower, and Safety performance is good, and regular maintenance is convenient, and operating cost is low; Reservoir vessel is from heavy and light, and shape selective is large.So be necessary very much to design and develop adsorption type natural gas storing equipment.Existing application number is the patent Novel adsorption natural gas storage tank of 201430328154.5, it in storage tank, arranges heat exchange sheet to shift the heat of adsorption of adsorptive process generation, heat exchange sheet and sorbent interlayer are arranged, heat exchange sheet is installed and places sorbent and comparatively bother, and sorbent to have used replacing of a specified duration pretty troublesome, need dismounting cooling tube and heat exchange sheet.Based on above-mentioned background, a kind of active carbon adsorption formula natural gas storage tank that can be convenient for changing sorbent of the present utility model.

Three, model utility content

A kind of active carbon adsorption formula natural gas storage tank of the present utility model, it has the double layer construction of the spherical tank body in intermediate cylindrical two and cylindrical cooling external jacket housing, it is made up of cooling serpentine coil in gas holder main body and cooling external jacket housing and tank, adds entrance (2), serpentine coil coolant outlet (3), cooling serpentine coil (4), gas holder main body (5), cooling external jacket housing (6) and cooling water intake (7) formed primarily of charge and discharge gas port (1), activated carbon of sorbent.All cooling unit is set outward in tank inner canister, in time the heat of adsorption that sorbent produces in inflation adsorptive process can be spread out of, cooling serpentine coil is set in gas holder main body, cooling external jacket is set outside gas holder main body, gas holder main body and cooling external jacket are together with tank body upper weld, one end of serpentine coil is connected at tank body top and cooling external jacket, and the other end picks out from tank body top.When gas holder is inflated, cooling water flows into from cooling external jacket import (7), flow out from serpentine coil coolant outlet (3), the heat of adsorption that active carbon adsorption rock gas process produces can be taken away respectively by the cooling water in the cooling external jacket outside the cooling serpentine coil of tank interior and tank body, avoids active carbon temperature raise and reduce its adsorptive power.

Four, accompanying drawing explanation

Fig. 1 is the facade cross-sectional schematic of the natural gas storage tank of a kind of active carbon adsorption formula described in the utility model, and (1) is charge and discharge gas port; (2) for activated carbon of sorbent adds entrance; (3) be serpentine coil coolant outlet; (4) be cooling serpentine coil; (5) be gas holder main body; (6) be cooling external jacket housing; (7) be cooling water intake.Fig. 2 is the cross-sectional profile schematic diagram of the natural gas storage tank of a kind of active carbon adsorption formula described in the utility model.

Five, embodiment

A kind of active carbon adsorption formula natural gas storage tank described in the utility model realizes absorption inflation and gas storage like this: in slack tank, add entrance (2) through sorbent add active carbon particle, cover lid, in cooling external jacket, tap water is passed into through cooling water intake (7) while filling rock gas to storage tank, flow out from outlet (3) after flowing through serpentine coil, the transfer of heat that active carbon produces in absorbed natural gas process is realized to go out, the temperature of active carbon is avoided to raise and reduce its adsorptive power, so just can reach and in tank, be filled with more rock gas under identical inflation pressure condition, when gas holder reaches certain inflation pressure and after keeping appropriate time, turn off cooling water valve, just complete the inflation to gas holder.Also can pass into hot water from cooling water intake (7) to external jacket when the pressure of the outside gas transmission of the lower gas holder of ambient temperature is very little close to when discharging, more rock gas be desorbed from active carbon, reduces rock gas residual quantity wherein.When the active carbon in gas holder used to need after the long period to change time, as long as open the lid that active carbon adds entrance, the active carbon of hydraulic performance decline in tank is poured out, new active carbon is added in gas holder, operate more convenient.

Claims (1)

1. an active carbon adsorption formula natural gas storage tank, it is characterized in that: it has the double layer construction of the spherical tank body in intermediate cylindrical two and cylindrical cooling external jacket housing, it is made up of gas holder main body and cooling external jacket housing and cooling serpentine coil, primarily of charge and discharge gas port (1), activated carbon of sorbent adds entrance (2), serpentine coil coolant outlet (3), cooling serpentine coil (4), gas holder main body (5), cooling external jacket housing (6) and cooling water intake (7) formed, all cooling unit is set outward in tank inner canister, cooling serpentine coil is set in gas holder main body, cooling external jacket is set outside gas holder main body, gas holder main body and cooling external jacket are together with tank body upper weld, one end of serpentine coil is connected at tank body top and cooling external jacket, the other end picks out from tank body top.