CN206093509U - Natural gas buffer tank - Google Patents

Abstract

The utility model provides a natural gas buffer tank, including a pressure vessel who has the enclosed construction, last air inlet and the gas outlet seted up of pressure vessel placed methane adsorption equipment in the pressure vessel, wherein, methane adsorption equipment includes a filtering container and methane adsorbent, the methane adsorbent place closedly in in the filtering container, the utility model discloses can effectively solve current natural gas buffer energy loss and big and have a problem of certain potential safety hazard.

Description

Natural gas surge tank

Technical field

This utility model is related to natural gas transportation field, more particularly to a kind of natural gas surge tank.

Background technology

Many natural gas facilities and corresponding facility are equipped with natural gas relief area (being generally also surge tank), and they can For adjusting different load conditions.This utility model is mainly used to the natural gas buffer capacity for improving relief area.

Liquefied natural gas truck is commonly equipped with natural gas surge tank, and it can be carried out according to acceleration or no-load running state Adjustment.Similar situation be there is also in the others natural gas facility such as compressed natural gas gas station, liquefied natural gas terminal, The compressed natural gas gas station of a such as standard can seal natural gas using four-stage compressor, while different in order to adapt to Load operating condition, can be equipped with 4～5 different size of surge tanks on compressor.All of surge tank is all standard type, Mainly it is made up of pneumatics force container.As a rule, the volume for reducing surge tank (or relief area) is requisite.But Existing relief area can cause energy loss, and while there is also certain potential safety hazard.

Utility model content

The shortcoming of prior art in view of the above, the purpose of this utility model are to provide a kind of natural gas surge tank, For solving the problems, such as that existing natural gas buffer unit energy loss is big and there is certain potential safety hazard.

For achieving the above object and other related purposes, this utility model provides technical scheme below：

A kind of natural gas surge tank, including one have enclosed construction pressure vessel, offer on the pressure vessel into QI KOU and gas outlet, are placed with methane adsorption device in the pressure vessel, wherein, the methane adsorption device includes a mistake Filter container and methane adsorbent, the methane adsorbent are closely positioned in the filtration container.

Preferably, the filtration container is porous flexible hermetic bag.

Preferably, the porous flexible hermetic bag is by spinning cloth or non-woven fabrics are made.

Preferably, it is a kind of or many during the methane adsorbent is by activated carbon, white carbon black, zeolite, Activated Graphite, molecular sieve The combination planted.

As described above, this utility model has the advantages that：By adding zeolite in liquefied natural gas relief area Or the liquefied natural gas adsorbent such as activated carbon, (35bar is less than) under lower pressure, the buffer capacity of liquefied natural gas can be obtained To significantly increase, for identical buffer capacity, Adsorption Natural Gas relief area can be less than ordinary buffer area very under normal circumstances Many times.

Liquefied natural gas relief area or surge tank can effectively improve storage or the methane content for buffering, this storage and buffering Function be by using activated carbon, molecular sieve, zeolite, Activated Graphite equimolecular level methane adsorbent realizing.It is this Relief area or storage device are can apply in liquefied natural gas facility, haulage vehicle and compressed natural gas depot, to reduce 5% energy loss efficiency.In the utility model, involved liquefied natural gas dashpot can reduce dirty with active adsorption gas Unknown various harm are reduced while dye.

Description of the drawings

Fig. 1 is shown as a kind of schematic diagram of natural gas surge tank.

Fig. 2 is shown as a kind of another schematic diagram of natural gas surge tank.

Component label instructions

1 pressure vessel

11 air inlets

12 gas outlets

2 methane adsorption devices

21 filter containers and

22 methane adsorbents

Specific embodiment

Embodiment of the present utility model is illustrated by particular specific embodiment below, those skilled in the art can be by this Content disclosed by description understands other advantages of the present utility model and effect easily.

Refer to Fig. 1.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to coordinate Content disclosed in description, so that those skilled in the art understands and reads, being not limited to this utility model can be real The qualificationss applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size It is whole, under the effect for not affecting this utility model can be generated and the purpose that can be reached, still all should fall in this utility model institute In the range of the technology contents of announcement are obtained and can be covered.Meanwhile, in this specification it is cited as " on ", D score, "left", "right", The term of " centre " and " one " etc., is merely convenient to understanding for narration, and is not used to limit the enforceable scope of this utility model, Its relativeness is altered or modified, under without essence change technology contents, when being also considered as the enforceable category of this utility model.

Fig. 1 is referred to, is a kind of schematic diagram of natural gas surge tank, as illustrated, the natural gas surge tank includes a tool There is the pressure vessel 1 of enclosed construction, air inlet 11 and gas outlet 12 are offered on the pressure vessel 1, in the pressure vessel 1 Methane adsorption device 2 is placed with inside, wherein, the methane adsorption device 2 includes a filtration container 21 and methane adsorbent 22, institute State methane adsorbent 22 to be closely positioned in the filtration container 21.

In being embodied as, the filtration container 21 is porous flexible hermetic bag.

In being embodied as, the porous flexible hermetic bag is by spinning cloth or non-woven fabrics are made.

In being embodied as, the methane adsorbent 22 is by activated carbon, white carbon black, zeolite, Activated Graphite, molecular sieve Plant or various combinations.

In conjunction with Fig. 2, it is a kind of another schematic diagram of natural gas surge tank, as illustrated, in the pressure with enclosed construction Force container 1 can arrange multiple methane adsorption devices 2, wherein, the methane adsorption device 2 includes a filtration container 21 and methane Adsorbent 22, the methane adsorbent 22 are closely positioned in the filtration container 21, it can in addition contain in pressure vessel 1 Air baffle is set between inwall and methane adsorption device 2, for facilitating the flowing of natural device, while reducing potential safety hazard.

In sum, this utility model is natural by adding zeolite or activated carbon etc. to liquefy in liquefied natural gas relief area Gas adsorbent, under lower pressure (be less than 35bar), the increase that the buffer capacity of liquefied natural gas may be significantly, for Identical buffer capacity, Adsorption Natural Gas relief area can be than much smaller times of ordinary buffer area under normal circumstances.

Further, it is also possible to effectively improve storage or the methane content for buffering, the function of this storage and buffering be by using Activated carbon, molecular sieve, zeolite, the methane adsorbent of Activated Graphite equimolecular level are realizing.This relief area or storage device Can apply in liquefied natural gas facility, haulage vehicle and compressed natural gas depot, imitated with the energy loss for reducing 5% Rate.In the utility model, involved liquefied natural gas dashpot can be reduced reducing not while pollution with active adsorption gas The various harm known.So, this utility model effectively overcomes various shortcoming of the prior art and has high industrial exploitation value Value.

Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited Type.Any person skilled in the art all can be carried out to above-described embodiment under without prejudice to spirit and the scope of the present utility model Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in this utility model All equivalent modifications completed under god and technological thought or change, should be covered by claim of the present utility model.

Claims (3)

1. a kind of natural gas surge tank, it is characterised in that：Including a pressure vessel with enclosed construction, on the pressure vessel Air inlet and gas outlet are offered, and methane adsorption device are placed with the pressure vessel, wherein, the methane adsorption device Container and methane adsorbent are filtered including one, the methane adsorbent is closely positioned in the filtration container.

2. natural gas surge tank according to claim 1, it is characterised in that：The filtration container is sealed for porous flexible Bag.

3. natural gas surge tank according to claim 2, it is characterised in that：The porous flexible hermetic bag by spin cloth or Non-woven fabrics are made.