CN208332862U - The de-waxing apparatus of natural gas - Google Patents
The de-waxing apparatus of natural gas Download PDFInfo
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- CN208332862U CN208332862U CN201820868506.8U CN201820868506U CN208332862U CN 208332862 U CN208332862 U CN 208332862U CN 201820868506 U CN201820868506 U CN 201820868506U CN 208332862 U CN208332862 U CN 208332862U
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Abstract
The utility model is the de-waxing apparatus about a kind of natural gas, belongs to natural gas purification technical field.The de-waxing apparatus includes preceding cooler, gas separator, aftercooler, throttle expansion valve, low temperature gas-liquid separator and wax removing agent filling unit, the wax removing agent filling unit includes: the storage tank for storing wax removing agent, the atomizer for conveying the pump of the wax removing agent and for the wax removing agent to be atomized；The described atomizer setting in gas separator between throttle expansion valve, for the wax removing agent to be added in the de-waxing apparatus.The utility model fills unit by wax removing agent and wax removing agent is added in natural gas treatment plant, atomizer can make wax removing agent form mist, increase the gas liquid interfacial area of natural gas and wax removing agent, liquid wax is prevented to be gathered into the crystal of wax, effectively solve the paraffin blockage phenomenon of natural gas processing plant, the safety in production hidden danger of cancellation element, improves the quality of product gas.
Description
Technical field
The utility model belongs to natural gas purification technical field, more particularly to a kind of de-waxing apparatus of natural gas.
Background technique
Due to natural conditions, all contain wax in the mined natural gas of gas field.In these natural gases
Wax either all has adverse effect the conveying of the use of natural gas or natural gas, therefore, it is necessary to obtain to gas-field exploitation
To natural gas carry out except Lasaxing Oilfield.
And existing natural gas paraffin removal scheme is to cool down natural gas, so that wax therein is formed liquid, then passes through
The mode of gas-liquid separation separates liquid wax to be formed product gas (dry gas) from natural gas, which produces as natural gas
Product are conveyed and are used.But since the wax in natural gas includes many kinds of substance, freezing point is distributed in very wide range,
The freezing point of especially some ingredients is higher, is just formed as solid-state in cooling procedure and is attached to the inside of relevant device, from
And will cause paraffin blockage phenomenon, this can seriously affect the normal exploitation production or conveying of natural gas.
In order to make the wax ingredient of high-solidification point remain liquid, the prior art is used is added lighter hydrocarbons in wax removing process
Scheme, as shown in Fig. 2, its generation that can alleviate and reduce paraffin blockage phenomenon.But the usage amount of lighter hydrocarbons produces greatly very much largely
Energy consumption；Also, for the light hydrocarbon recovery rate of dissolving wax only 30%, remaining 70% or so lighter hydrocarbons enters in product gas, from
And improve the hydrocarbon dew point of low gas product gas.Lighter hydrocarbons not can be completely removed the part wax ingredient of high-solidification point, into
And can also be deposited on low temperature gas-liquid separator inner member again, the dehydrating effect of low temperature gas-liquid separator is reduced, product gas is made
In water content increase, cause product gas water dew point increase.Since the hydrocarbon dew point of product gas, water dew point are higher, defeated over long distances
When sending, the change of pipe temperature, the gradient, direction promotes the hydrocarbon in natural gas, elutriation to come out, in low-lying place's hydrops of pipeline, shadow
The conveying capacity in speaking pipe road.
Utility model content
The main purpose of the utility model is that a kind of de-waxing apparatus of natural gas is provided, technical problem to be solved
It is the wax removed in natural gas, the safety in production hidden danger of cancellation element.
It the purpose of this utility model and solves its technical problem and adopts the following technical solutions to realize.
According to the utility model proposes a kind of natural gas de-waxing apparatus, including at least preceding cooler, the gas being set in sequence
Body separator, aftercooler, throttle expansion valve and low temperature gas-liquid separator further include wax removing agent filling unit, the wax removing agent
Filling unit includes at least: storage tank, for storing wax removing agent；Pump, for conveying the wax removing agent；With at least one atomizer,
For the wax removing agent to be atomized；The atomizer setting, between throttle expansion valve, is used for general in gas separator
The wax removing agent is added in the de-waxing apparatus.
It the purpose of this utility model and solves its technical problem also following technical measures can be used to further realize.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned, wherein the gas separator and aftercooler described in connection
Pipeline in the setting atomizer；And/or
The atomizer is set in the pipeline of the lower tube side right end seal head of the connection aftercooler；And/or
The atomizer is set in the pipeline of the connection aftercooler and throttle expansion valve.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned, wherein the atomizer be connected to by pipeline it is following
At least one position: tube side right end seal head and throttle expansion valve front end airflow pipeline under aftercooler admission line, aftercooler are used for
The wax removing agent of spray pattern is added in the de-waxing apparatus.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned, wherein further including pipeloop, by the low temperature gas-liquid
Separator, aftercooler, the series connection of preceding cooler, it is described for the exit gas of the low temperature gas-liquid separator to be fed sequentially into
Aftercooler and preceding cooler.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned, wherein the atomizer includes at least:
At least one nozzle, for the wax removing agent to be sprayed；
Inlet tube, for conveying the wax removing agent into the nozzle；
The nozzle is communicated with the inlet tube, and the inlet tube is communicated with the storage tank, and the pump is set
It sets between the inlet tube and the storage tank.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned, wherein pipe to be filled is protruded into the front end of the nozzle
In road.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned, wherein the nozzle is pressure type atomizer, rotation
Formula atomizer, pneumatic type atomizer, ultrasonic type atomizer, impacting type atomizer or electrostatic atomization nozzle.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned, wherein the nozzle is pressure nozzle.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned further includes sequentially connected gas collection header, production separator
And air cooler；The air cooler is connect with the preceding cooler by pipeline.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned further includes dry gas coalescer and lime set storage tank；Described is dry
Gas coalescer is connect with low temperature gas-liquid separator by pipeline；The lime set storage tank and the dry gas coalescer pass through pipeline
Connection.
By above-mentioned technical proposal, a kind of de-waxing apparatus of natural gas of the utility model is at least had the advantage that
(1) achieve the purpose that natural gas paraffin removal.Wax removing agent is filled into day using wax removing agent filling unit by the utility model
In right Flash Gas Compression Skid System, which can inhibit the wax of precipitation the liquid condition in molecule, prevent molecule
Liquid wax further assembles the crystal for forming wax, to achieve the purpose that natural gas paraffin removal.
(2) treatment effeciency of natural gas is improved.After wax removing agent is added in natural gas processing process, the molecule of formation
Liquid wax and natural gas enter low temperature gas-liquid separator together, and after low temperature gas-liquid separator is dehydrated de- hydrocarbon, liquid wax is with low temperature
Low temperature gas-liquid separator is discharged in ethylene glycol, hydrocarbon and the water of gas-liquid separator abjection together, into alcohol hydrocarbon process flow.This use is originally
Device eliminates aftercooler paraffin blockage phenomenon, reduces the risk of low temperature gas-liquid separator inner member failure, fundamentally improves dehydration
The treatment effeciency of de- hydrocarbon device.
(3) ensure the quality of product gas.Wax removing agent is added in natural gas processing process, effectively removes low temperature gas-liquid point
From the wax deposited in the past in device, low temperature gas-liquid separator is improved to the separative efficiency of liquid in natural gas, reduces product gas
Hydrocarbon dew point and water dew point, the hydrocarbon dew point of the utility model control at -8 DEG C hereinafter, than existing apparatus 2 DEG C of (states of -6 DEG C of reductions
Family's standard: hydrocarbon is not precipitated under the pressure and temperature of natural gas interface point)；Water dew point control is at -18 DEG C hereinafter, comparing existing apparatus
4 DEG C (national standard: water dew point is 5 DEG C lower than minimum transport environment temperature under highest operating pressure) of -14 DEG C of reductions, to improve
The quality of product gas.
(4) processing cost of natural gas is reduced.Wax removing agent is added in natural gas and carries out paraffin removal for the utility model, without note
Enter lighter hydrocarbons, not only saved the cost generated by consumption lighter hydrocarbons, but also saved the cost of the secondary de- hydrocarbon of product gas, because of filling lighter hydrocarbons
The 30% of lighter hydrocarbons injection rate can only be recycled when molten wax, and product gas hydrocarbon dew point is caused to increase, using the present apparatus, without filling lighter hydrocarbons
The wax for going dissolved natural gas to be precipitated, saves 70% lighter hydrocarbons injection rate.Therefore, the use of the present apparatus reduces the processing of natural gas
Cost.
(5) yield of condensate is improved.Because low temperature gas-liquid separator inner member efficiency improves, eliminate due to low temperature gas-liquid
Separator inner member paraffin blockage makes gas dehydration take off the problem of hydrocarbon is insufficient, and abjection liquid measure is reduced, and low temperature gas-liquid separator is normal
Work can be such that more condensates take off from natural gas, so that the yield of condensate is improved, moreover, deviating from from natural gas
Wax be dissolved in condensate, the yield of condensate increases therewith.
(6) guarantee equipment safety even running.In the insurmountable situation of paraffin blockage phenomenon, the actual treatment ability of device
Only the 70% of design treatment ability, the cleaning wax period is short (7-10 days), frequent switching device；Filling lighter hydrocarbons only extend clear
The wax period is washed, does not solve paraffin blockage phenomenon thoroughly；The paraffin removal process for filling wax removing agent is more safer than the molten ceroplastic for filling lighter hydrocarbons,
Because lighter hydrocarbons are combustible material, the Safety Risk in Production such as leakage, kindling, explosion are easy to happen, so the paraffin removal of the utility model
Technique alleviates device operation risk.Therefore, the utility model can solve device paraffin blockage problem, recovery device processing capacity,
Guarantee equipment safety even running, the essential safety of realization device.
(7) easy to operate.A simple paraffin removal need to be only added in the utility model in original natural gas treatment plant
Agent filling unit can realize that the paraffin removal of natural gas, the device use safe and simple, device maintenance easy to operate.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Detailed description of the invention
Fig. 1 is the schematic diagram of the de-waxing apparatus for the natural gas that the utility model one embodiment proposes；
Fig. 2 is the schematic diagram of the de-waxing apparatus for the natural gas that another embodiment of the utility model proposes；
Fig. 3 is the schematic diagram of the de-waxing apparatus for the natural gas that another embodiment of the utility model proposes；
Fig. 4 is the schematic diagram of the de-waxing apparatus for the natural gas that another embodiment of the utility model proposes；
Fig. 5 is the schematic diagram of the wax removing agent filling unit of aftercooler admission line；
Fig. 6 is the schematic diagram of the wax removing agent filling unit of aftercooler admission line and throttle expansion valve front end；
Fig. 7 is the structural schematic diagram of sprayer；
Fig. 8 is the structural schematic diagram of rose.
1 is gas collection header, and 2 be production separator, and 3 be air cooler, and 4 be preceding cooler, and 5 be gas separator, and 6 be rear cold
Device, 7 be throttle expansion valve, and 8 be low temperature gas-liquid separator, and 9 be alcohol hydrocarbon liquid, and 10 be dry gas, and 11 be lighter hydrocarbons decanting point, and 12 be paraffin removal
The first decanting point of agent, 13 be the second decanting point of wax removing agent, and 14 be wax removing agent third decanting point, and 15 be storage tank, and 16 be the first pressurization
Metering pump, 17 be the second pressurised metered pump, and 18 be nozzle, and 19 be inlet tube, and 20 be connector.
Specific embodiment
Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken,
Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes a kind of natural gas de-waxing apparatus, it is specific real
Mode, structure, feature and its effect are applied, detailed description is as follows.In the following description, different " embodiment " or " embodiment "
What is referred to is not necessarily the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by any suitable
Form combination.
The utility model embodiment provides a kind of de-waxing apparatus of natural gas, and as shown in figures 1-8, which includes passing through
The sequentially connected gas collection header 1 of pipeline, production separator 2, air cooler 3, preceding cooler 4, gas separator 5, aftercooler 6, throttling
Expansion valve 7, low temperature gas-liquid separator 8, dry gas coalescer and lime set storage tank.The de-waxing apparatus further includes wax removing agent filling unit.
In the present embodiment, gas collection header 1, for collecting the mined natural gas of gas field, to buffer and balance
Each side carrys out the pressure and flow of gas, and carries out concentrating pressure regulation and temperature adjustment as needed to natural gas.
Production separator 2, for separating and removing the water or liquid impurity that contain in natural gas, which does not have
There is special limitation, gravitational separator, whirlwind separator or filtering type separation can be selected according to conventional separator
Device etc..
Air cooler 3, also referred to as " air-cooled type heat exchanger " are using surrounding air as cooling medium, and cooling come from produces
The natural gas of separator 2.
Preceding cooler 4 carries out the natural gas from air cooler 3 with the cryogenic natural gas product gas being transmitted back to through pipeloop
Secondary heat exchange.The preceding cooler 4 is not particularly limited, and plate heat exchanger, shell-and-tube can may be selected according to conventional heat exchanger
Heat exchanger, double pipe heat exchanger or dividing wall type heat exchanger etc..
Gas separator 5, for being separated to the natural gas from preceding cooler 4, to remove in natural gas because temperature drops
Low and formation lime set, the gas separator 5 are not particularly limited, and gravity type can may be selected according to conventional separator
Separator, whirlwind separator or filter separator etc..
Aftercooler 6, by from gas separator 5 natural gas and cryogenic natural gas product gas carry out level-one heat exchange, after this
Cooler 6 is not particularly limited, and plate heat exchanger, shell and tube cooler, bushing type can may be selected according to conventional heat exchanger
Heat exchanger or dividing wall type heat exchanger etc..
Throttle expansion valve 7 is Joule-Thomson throttle expansion valve, and Joule-Thomson throttling expansion principle is briefly
It is that high pressure gas temperature after throttling expansion can decline.
Low temperature gas-liquid separator 8 is for separating the natural gas after throttling expansion, to remove in natural gas because of temperature
The lime set for reducing and being further formed, the gas separator are not particularly limited, and can may be selected according to conventional separator
Gravitational separator, whirlwind separator or filter separator etc..
The wax removing agent filling unit includes at least: storage tank 15, for storing wax removing agent；Pump, for conveying described remove
Cerate；With at least one atomizer, for the wax removing agent to be atomized；The atomizer setting is in preceding cooler to throttling
Between expansion valve, for the wax removing agent to be added in the de-waxing apparatus.
The wax removing agent filling unit is for wax removing agent to be added in the de-waxing apparatus, so that wax removing agent and natural gas
It is mixed, and then the wax in natural gas is made to keep liquid condition during gradually cooling down.The wax removing agent fills single
Member and the junction of the de-waxing apparatus are known as wax removing agent filling point.In the present invention, the position of wax removing agent filling point is
Preceding cooler is between throttle expansion valve, and the quantity of filling point is one or more than one multiple.Due to wax removing agent group
Divide and carries out contacting the effect that can realize paraffin removal with the wax component in natural gas, meanwhile, wax removing agent makes the utility model
Under the conditions of be liquid, in order to preferably realize that wax removing agent is contacted with the wax in natural gas, the utility model compared with
Good embodiment is atomized wax removing agent, and the wax removing agent after atomization is mixed with natural gas.
Further, as shown in Figure 1, the atomization is arranged in the pipeline of connection gas separator 5 and aftercooler 6
Device.
Further, as shown in Fig. 2, the atomization is arranged in the pipeline of connection gas separator 5 and aftercooler 6
Device, while the setting atomizer in the pipeline of cooler 6 and throttle expansion valve 7 upon connection.
Further, as shown in figure 3, the atomization is arranged in the pipeline of connection gas separator 5 and aftercooler 6
Device, while the setting atomizer in the pipeline of the lower tube side right end seal head of cooler 6 upon connection.
Further, as shown in figure 4, the atomization is arranged in the pipeline of connection gas separator 5 and aftercooler 6
Device, upon connection the setting atomizer in the pipeline of cooler 6 and throttle expansion valve 7, while the lower tube side of cooler 6 upon connection
The setting atomizer in the pipeline of right end end socket.
The atomizer can also be connected at least one following position by pipeline: gas separator exports, is rear cold
Device entrance, aftercooler outlet, tube side right end seal head and throttling expansion valve inlet under aftercooler, for by the described of spray pattern
Wax removing agent is added in the de-waxing apparatus.
It should be noted that the atomizer both can be set in natural gas line, in any one implementation picture 1-4
One or more atomizers are set in the pipeline at wax removing agent filling point shown in example, are pumped into the wax removing agent in storage tank by pumping
In atomizer, wax removing agent is atomized by atomizer first, forms the wax removing agent of spray pattern, then mixed with raw natural gas
It closes, achievees the purpose that paraffin removal, alternatively, the atomizer also can be set outside natural gas line, pass through one or more
Wax removing agent is atomized by atomizer first, forms the wax removing agent of spray pattern, and then be connected to picture 1-4 by pipeline
It on pipeline at wax removing agent filling point shown in any one embodiment, is entered in natural gas line by connecting pipeline, with original
Material natural gas is mixed, and achievees the purpose that paraffin removal；It is contemplated that directly atomizer is arranged in natural gas line, with
The effect of raw natural gas mixing is more preferable；But atomizer is arranged outside natural gas line, it avoids and existing pipeline is carried out
Big transformation, also saves improvement cost, reduces transformation difficulty, and the influence to original technique is preferably minimized.
When selecting two or more wax removing agent decanting points, it is only necessary to which the storage tank of a wax removing agent uses connecting tube
Storage tank and atomizer are attached by line, and pump is arranged in the connecting pipeline of storage tank and atomizer, with pump by the paraffin removal in storage tank
Agent is pumped into each atomizer, after atomization, into natural gas, mix simultaneously paraffin removal.
In the present embodiment, as shown in fig. 7, the atomizer includes at least:
At least one nozzle 18, for the wax removing agent to be sprayed；
Inlet tube 19, for conveying the wax removing agent into the nozzle 18；
The nozzle 18 is communicated with the inlet tube 19, and the inlet tube 19 is communicated with the storage tank 15.
The effect of nozzle 18 is to be atomized the wax removing agent liquid, forms the liquid mist of diameter very little, described with increase
The contact area of wax removing agent and natural gas achievees the purpose that quickly to blend.
The quantity of nozzle 18 is for 1 or multiple, can be on inlet tube when the atomizing effect of a nozzle is undesirable
Two or more nozzles are installed at end, multi-direction to be sprayed, and are reached and the better mixing effect of natural gas.
Nozzle atomization process is mainly by the control of 4 kinds of power, i.e. aerodynamic drag, stickiness power, the surface tension of liquid and inertia
Power.Interaction between this 4 kinds of power makes continuous liquid note that division occur, be crushed.It is penetrated it is generally acknowledged that nozzle atomization process is divided into
Flow atomization process and liquid-sheet atomization process.
Droplet size after atomization reflects the grain fineness of atomization, and the particle of droplet is thinner, the contact surface with natural gas
Product is bigger, and mixing effect is more preferable.
The atomizer further includes connector 20, and one end of connector 20 is connect with inlet tube 19, the other end with it is described
The connection of storage tank 15 or be connected on pipeline to be filled, the connector 20 and the storage tank 15 is arranged in the pump
Between.
The nozzle 18 is extend into pipeline to be filled.
Influence in order to avoid installation sprayer to existing pipeline, reduces transformation difficulty, need to select small-bore nozzle.
The nozzle 18 include but is not limited to pressure type atomizer, rotation type atomization nozzle, medium atomization formula nozzle,
Impacting type atomizer, ultrasonic wave atomizing nozzle, electrostatic atomization nozzle.
Pressure atomized fog jet: pressure is increased to spraying liquid, high pressure fluid flow passes through atomizer mouth and atmospheric pressure
It generates collision vibration and generates atomization particle.After the highly pressurised liquid of direct projection atomizer is ejected from jet hole, liquid is in disorder
State can be directly atomizing particle from liquid crushing, this process is called primary crushing.If the flow velocity of liquid is sufficiently large also
Second-time breakage phenomenon can occur, atomizing effect is more obvious, it can be determined that the disorder mobility and fogging degree of liquid stream.Because of pressure
Power atomizer it is easy to use so being widely used in industry
Rotation type atomization nozzle: rotation type atomization nozzle interior has the structure of spin chamber, and liquid is in the inside of atomizer
With regard to forming film, after atomized drop jetting nozzle, surface tension of liquid overcomes the inertia of liquid, the liquid under the power effect of air
Body is broken for drop pressure and jet velocity increase can be such that liquid-sheet disintegration accelerates with air relative motion, very at Filamentous or band-like
It can be formed by spraying to can achieve the jet hole for leaving atomizer, to this kind of atomizer, its atomizing principles reason includes
The exchange interaction of centrifugal atomizing and speed atomization, the spin chamber of rotation type atomization nozzle are determine atomizing effect main.Rotation
Rotatable atomizer, which has to generate, to be sufficiently atomized.
Medium atomization formula nozzle: by the high-speed jet of the same axial or vertical direction of fluid, to make liquid carry out mist
Change, therefore also referred to as double fluid atomization nozzle, this kind of atomizer is often made of center round tube, outer annular gap, using height
Mutual impact, the friction of the fluid column or liquid film of fast air-flow and low-velocity liquid, fragmentation become tiny atomizing particle.Most common Jie
Matter atomized spray injectior is air atomizer spray nozzle.Medium atomization formula nozzle atomization particle fine uniform, atomization are sufficiently therefore extensive
Using.
Impacting type atomizer: liquid is projected from atomizer mouth high speed, is touched with disk, the thimble etc. of atomizer outlet
It hits together or two fluids is piled up, be broken into tiny atomizing particle.Impacting type atomizer can be in low pressure
It is generated by spraying under environment, the disadvantage is that droplet diameter distribution is more uneven, spray velocity is low.
Ultrasonic wave atomizing nozzle: ultrasonic wave atomizing nozzle usually produces liquid by the disconnecting plug of compressed air or electromagnetic drive
Raw high speed shakes and forms atomizing particle, because the vibration frequency of oscillator is more than sound wave, so referred to as ultrasonic wave atomizing nozzle.
Ultrasonic atomization spirt row can be made repeated on/off by the flow control function of pulse width modulation.It is generally used for laboratory
With the places such as medical instrument, atomizing effect is fine, but liquid atomization quantity is small, and use cost is high, belongs to high-precision equipment.
Electrostatic atomization nozzle: HV generator is charged to media fluid and atomization particle progress, reduces medium
Surface tension and viscosity resistance make liquid crushing at very tiny atomizing particle, atomizing particle fine uniform.Droplet is charged
Afterwards, Charged Droplet is easy to happen secondary-atomizing under the action of high-voltage electrostatic field can generate secondary-atomizing, high-pressure electrostatic atomization tool
Have that mist droplet particle size is tiny, atomizing particle diameter dimension is single, spread of spray is wide.Electrostatic atomization nozzle is confined to part high-precision
In atomization process, be mainly used in refine pesticide spraying, combustion generator, nano-spray, etc. industries.
In the present embodiment, no matter atomizer is arranged in pipeline or outside pipeline, requires the atomization shape for guaranteeing to be formed
The pressure of the wax removing agent of state is higher than the pressure in natural gas line, and in the present embodiment, the pressure in natural gas line is
10.5MPa, then the pressure of the wax removing agent of spray pattern can choose 10.6MPa, 10.8MPa or 11MPa, it is therefore, described
The preferred pressure type atomizer of nozzle 18 not only can be measured accurately but also can correspondingly, the pump can choose pressurised metered pump
With pressurization.
Preferably, the de-waxing apparatus of a kind of natural gas above-mentioned further includes dry gas coalescer and lime set storage tank；Described is dry
Gas coalescer is connect with low temperature gas-liquid separator 8 by pipeline；The lime set storage tank and the dry gas coalescer pass through pipe
Line connection.
A kind of preferred embodiment according to the present utility model, the de-waxing apparatus of the utility model further include pipeloop,
The dry gas coalescer, aftercooler 6, preceding cooler 4 are connected, after being fed sequentially into the exit gas of dry gas coalescer
Cooler 6 and preceding cooler 4.
Cryogenic natural gas product gas from dry gas coalescer passes through pipeloop, is fed sequentially into aftercooler 6 and preceding cold
In device 4, heat exchange is carried out with raw natural gas, the dry gas 10 of room temperature is finally obtained, by heat exchange, can sufficiently recycle
Cooling capacity entrained by cryogenic natural gas product gas can make the temperature of dry gas reach room temperature for cooling down raw natural gas, convenient
The subsequent delivery of dry gas recycles cooling capacity by heat exchange, reduces energy consumption, while it is de- to reduce gas dehydration
The production cost of hydrocarbon.
Specifically used process according to the present utility model is described in detail as follows, but it should be recognized that following the description is not
For limiting the utility model.
Natural gas from gas collection header 1, temperature be 30-50 DEG C, preferably 40 DEG C, pressure 9-12MPa, preferably
10.5MPa；It is separated through production separator 2, removes the water and liquid impurity in natural gas, the natural gas from production separator 2
20-30 DEG C, preferably 26 DEG C are cooled to through air cooler 3；Natural gas from air cooler 3 in preceding cooler 4 with it is defeated through pipeloop
The cryogenic natural gas product gas sent back to carries out heat exchange, and the cooling natural gas from air cooler 3 is to 10-20 DEG C, and preferably 16 DEG C；Come
It is separated from the natural gas of preceding cooler 4 through gas separator 5, removes the lime set formed in natural gas because temperature reduces.
In the treatment process of above-mentioned natural gas, the variation of pressure is very small, can be ignored.
In the utility model, natural gas of the definition from gas separator 5 is raw natural gas.The raw natural gas
Pressure is 9-12MPa, preferably 10.5MPa, and temperature is 10-20 DEG C, preferably 16 DEG C.The raw natural gas contains wax, described
Wax be CnH2n-6Aromatic hydrocarbons and CmH2m+2Alkane at least one, wherein n be 6-20 positive integer, preferably 8-15, m 8-
40 positive integer, preferably 17-35, in different gas sources, the composition of wax is different, and institute's content of wax is specific in natural gas
Composition is subject to on-site test.Wherein, with the reduction of temperature, the wax in natural gas can be gradually precipitated, and form paraffin blockage phenomenon,
Influence the safety and steady operation of device.
The raw natural gas carries out heat with the cryogenic natural gas product gas being transmitted back to through pipeloop in aftercooler 6
Exchange, is cooled to -5 DEG C to 5 DEG C, preferably 0 DEG C for the raw natural gas；Natural gas from aftercooler 6 is through throttling expansion
The throttling expansion of valve 7 further decreases the temperature of natural gas, the natural gas from aftercooler 6, the temperature before throttling expansion
It is -5 to -5 DEG C, preferably 0 DEG C, pressure 10-11MPa, preferably 10.5MPa, the temperature after throttling expansion is -16 DEG C to -20 DEG C,
It is preferred that -18 DEG C, pressure 6-7MPa, preferably 6.5MPa；Natural gas from throttle expansion valve 7 enters low temperature gas-liquid separator 8
In, it is separated, to remove the lime set being further formed in natural gas because temperature reduces, from low temperature gas-liquid separator 8
Natural gas enters into dry gas coalescer, carries out isolated cryogenic natural gas product gas, the liquid wax of abjection is with alcohol hydrocarbon liquid 9
Into alcohol hydrocarbon process flow, cryogenic natural gas product gas successively returns in aftercooler 6 and preceding cooler 4 through pipeloop, through heat
Exchange, makes full use of the cooling capacity of cryogenic natural gas product gas, obtains dry gas 10；Lime set after separation enters lime set storage tank, through two
Grade separation, gas return dry gas coalescer in, liquid together with from the lime set that low temperature gas-liquid separator 8 is deviate from alcohol hydrocarbon liquid 9 into
Enter alcohol hydrocarbon process flow.
Cryogenic natural gas product gas from dry gas coalescer passes through pipeloop, is fed sequentially into aftercooler 6 and preceding cold
In device 4, heat exchange is carried out with raw natural gas, the dry gas 10 of room temperature is finally obtained, by heat exchange, can sufficiently recycle
Cooling capacity entrained by cryogenic natural gas product gas can make the temperature of dry gas reach room temperature for cooling down raw natural gas, convenient
The subsequent delivery of dry gas recycles cooling capacity by heat exchange, reduces energy consumption, while it is de- to reduce gas dehydration
The production cost of hydrocarbon.
The alcohol hydrocarbon liquid includes ethylene glycol, hydrocarbon and water, in natural gas treatment plant, to guarantee outer defeated gas product
Hydrocarbon, water dew point are qualified, the general treatment process for combining low temperature to take off hydrocarbon using physics dehydration.In Natural Gas Shallow Freezing Unit, generally
Use ethylene glycol as antifreezing agent, guarantees to be dehydrated going on smoothly for de- hydrocarbon process, this is because ethylene glycol volatility is low, low toxicity,
And it is easy to separate with the water absorbed.Glycol Circulation System includes note alcohol system and regenerative system two parts, it is necessary to natural
Gas injects ethylene glycol before entering low temperature environment, this is that natural gas generates hydrate in low temperature in order to prevent, and ethylene glycol is with natural
Gas enters low temperature gas-liquid separator 8 together, and in low temperature gas-liquid separator 8, the liquid hydrocarbon in natural gas is separated, and carries part water
The ethylene glycol lean solution of vapour becomes ethylene glycol rich solution, and to guarantee to recycle, ethylene glycol rich solution, which enters glycol recycling tower, to be carried out again
It is raw.
Wax can be remained liquid condition, so as to flow by the crystal structure of change wax by the wax-proofing agent
And discharge system, it reduces and eliminates the paraffin deposit in container and pipeline, so that system be avoided to stop production and cleaning, be added described
After wax-proofing agent, the wax in natural gas forms liquid condition, can remove, reach from natural gas by simple gas-liquid separation
The purpose of paraffin removal.
Obtained wax removing agent is stored in storage tank；The wax removing agent in storage tank is pumped into atomizer with pump, it is described
Preferred metering pump is pumped, for conveying liquid, to meet various stringent process flow needs, flow can be in 0-100% range
Interior step-less adjustment.The described atomizer setting in gas separator between throttle expansion valve, for the wax removing agent to be added
Into the de-waxing apparatus.Optionally, cooler extremely throttles before can also being added to atomized wax removing agent by pipeline
Between expansion valve.
In the utility model embodiment, natural gas is gas phase, and wax removing agent is liquid phase, in order to increase connecing for gas phase and liquid phase
Contacting surface product, preferably plays the paraffin removal effect of wax removing agent, and the wax removing agent of liquid phase is first atomized into small mist with atomizer
Drop, the wax in these misty drops and natural gas is fully mixed, by the wax that will be precipitated inhibition at small
The liquid condition of grain prevents liquid wax from being gathered into the crystal of wax, effectively solves paraffin blockage phenomenon；And the wax control of the liquid condition formed
The mixture of agent and wax can be from natural by low temperature gas-liquid separation with entering in low temperature gas-liquid separator 8 for natural gas
It is removed in gas, achievees the purpose that paraffin removal.
In the utility model embodiment, the loading plan of wax removing agent is as follows:
The atomizer is arranged in scheme one in the pipeline of connection gas separator 5 and aftercooler 6, as shown in Figure 1,
Wax removing agent is filled in the position of the first decanting point of wax removing agent 12, wax removing agent fills unit, as shown in figure 5, but need to illustrate
It is that the first decanting point of wax removing agent 12 is not intended to limit the utility model.
Illustrate, according in the temperature variations of entire process flow and natural gas the characteristics of wax, when in 6 tube side of aftercooler
The temperature of natural gas from when being down to 0 DEG C for 16 DEG C, in natural gas condensation point the substance (such as benzene) of this range will be in aftercooler tube side
Middle precipitation simultaneously forms clogging, it is therefore desirable to increase a wax removing agent filling point on 6 admission line of aftercooler.If the party
Case not can solve the paraffin blockage phenomenon of subsequent low temperature gas-liquid separator 8, be stepped up wax removing agent adding amount first, if still not
It can solve subsequent paraffin blockage, consideration is further added by least one wax removing agent decanting point.
The atomizer is arranged in the pipeline of connection gas separator 5 and aftercooler 6, while connecting for scheme two
The setting atomizer in the pipeline of aftercooler 6 and throttle expansion valve 7, as shown in Fig. 2, simultaneously in the first decanting point of wax removing agent
12 and the second decanting point of wax removing agent 13 position fill wax removing agent, wax removing agent fill unit, as shown in fig. 6, but needing to illustrate
, the first decanting point of wax removing agent 12 and the second decanting point of wax removing agent 13 are not intended to limit the utility model.Wax removing agent filling
Amount is adjusted according to on-site actual situations.
Illustrating, the throttling expansion through throttle expansion valve 7, the temperature of natural gas is down to -18 DEG C by 0 DEG C, into low-temperature condition,
The condensation point contained in natural gas can be precipitated in 0 DEG C to -18 DEG C of substance, and enter low temperature gas-liquid separator 8 with natural gas
In, its inner member is blocked, it is reduced and is dehydrated de- hydrocarbon effect, it is therefore desirable to be further added by one at the front-end pipeline of throttle expansion valve 7
A wax removing agent decanting point, make be precipitated wax be maintained at liquid condition, the separation through low temperature gas-liquid separator 8 and remove.
The atomizer is arranged in the pipeline of connection gas separator 5 and aftercooler 6, while connecting for scheme three
The setting atomizer in the pipeline of the lower tube side right end seal head of aftercooler 6, as shown in figure 3, being injected simultaneously in wax removing agent first
The position of point 12 and wax removing agent third decanting point 14 fills wax removing agent, but it should be recognized that 12 He of the first decanting point of wax removing agent
Wax removing agent third decanting point 14 is not intended to limit the utility model.Wax removing agent adding amount is adjusted according to on-site actual situations.
Illustrate, natural gas generates hydrate in low temperature in order to prevent, before natural gas enters low temperature environment, is typically chosen
The left end end socket of tube side injects ethylene glycol on aftercooler 6, as shown in Figure 2, it is contemplated that the addition of ethylene glycol may influence whether
The effect of wax removing agent, therefore a wax removing agent decanting point is further added by tube side right end seal head under aftercooler 6.
The atomizer is arranged in scheme four in the pipeline of connection gas separator 5 and aftercooler 6, cold upon connection
The setting atomizer in the pipeline of device 6 and throttle expansion valve 7, while the pipe of the lower tube side right end seal head of cooler 6 upon connection
The atomizer is set in road, as shown in figure 4, simultaneously in the first decanting point of wax removing agent 12,13 and of the second decanting point of wax removing agent
The position of wax removing agent third decanting point 14 fills wax removing agent, but it should be recognized that the first decanting point of wax removing agent 12, wax removing agent the
Two decanting points 13 and wax removing agent third decanting point 14 are not intended to limit the utility model.Wax removing agent adding amount is according to live practical
Situation adjustment.
Illustrate, if the phenomenon that scheme one, scheme two and scheme three all can't resolve paraffin blockage, it may be considered that in wax removing agent
One decanting point 12, the second decanting point of wax removing agent 13 and wax removing agent third decanting point 14 fill wax removing agent simultaneously, solve whole flow process
Paraffin blockage problem.
The wax removing agent filling unit can both be made into fixed wax removing agent filling unit, may be alternatively configured mobile skid and remove
Cerate fills unit (for treatment plant, can generally build a fixed wax removing agent filling unit).
Natural gas after paraffin removal enters in dry gas coalescer through the low temperature gas-liquid separation of low temperature gas-liquid separator 8, through excessive
From, obtain dry gas, after separation, a part of heavier liquid is drained into alcohol hydrocarbon liquid 9, with alcohol hydrocarbon liquid 9 enter alcohol hydrocarbon handle
Process, the lighter liquid of another part enter in lime set storage tank, are further separated, gaseous material returns to wet
In liquid/gas separator 8, realize that contained natural gas recycles in liquid, liquid is drained into alcohol hydrocarbon liquid 9, with alcohol hydrocarbon liquid 9
Into alcohol hydrocarbon process flow.
Cryogenic natural gas product gas from dry gas coalescer passes through pipeloop, is fed sequentially into aftercooler 6 and preceding cold
In device 4, heat exchange is carried out with raw natural gas, the dry gas 10 of room temperature is finally obtained, by heat exchange, can sufficiently recycle
Cooling capacity entrained by cryogenic natural gas product gas can make the temperature of dry gas reach room temperature for cooling down raw natural gas, convenient
The subsequent delivery of dry gas recycles cooling capacity by heat exchange, reduces energy consumption, while it is de- to reduce gas dehydration
The production cost of hydrocarbon.
In following embodiment, wax-proofing agent 1 is selected to be implemented, the weight percentage of each component is shown in Table 1.
Table 1
By taking certain western gas field natural gas processing plant of China as an example, which shares three sets and is dehydrated de- hydrocarbon device following embodiment,
Design dual-purpose one standby, the treating capacity of list covering device is 3,500,000 sides/day.
Embodiment 1
(1) natural gas for entering the factory through (40 DEG C of temperature, pressure 10.5MPa) of gas collection header 1, in production separator 2
It is separated, removes the water and liquid impurity in natural gas, then carried out in air cooler 3 air-cooled, so that temperature is down to 26 DEG C, so
Enter in preceding cooler 4 afterwards, carries out heat exchange with cryogenic natural gas product gas, temperature is made to be down to 16 DEG C；Again through gas separator 5 into
Row separation, removes the lime set in natural gas, obtains raw natural gas；
(2) atomizer is set in the pipeline of connection gas separator 5 and aftercooler 6, the first note of wax removing agent in Fig. 1
The position of access point 12 draws a connecting pipeline from the storage tank 15 for storing the wax removing agent, connects the atomizer, storage tank 15 and mist
Change and first pressure metering pump 16 is set in the connecting pipeline between device, it will be described in storage tank 15 with the first pressure metering pump 16
Wax removing agent is pumped into atomizer, as shown in figure 5, after atomizer is atomized, into raw natural gas, with raw natural gas into
Row mixing, obtains the first mixture；First mixture enters in aftercooler 6, carries out heat with cryogenic natural gas product gas
Exchange, makes temperature be down to 0 DEG C, wherein 30 kg/day of additional amount of the wax removing agent.
(3) the first mixture described in carries out throttling expansion through throttle expansion valve 7, and the temperature before throttling expansion is 0 DEG C, pressure
Power is 10.5MPa, and the temperature after throttling expansion is -18 DEG C, and pressure 6.5MPa is entered back into low temperature gas-liquid separator 8 and carried out
Separation, obtains dewaxing natural gas, and dewaxing natural gas obtains cryogenic natural gas product gas, the liquid of abjection by further separation
State wax enters alcohol hydrocarbon process flow with alcohol hydrocarbon liquid 9；Cryogenic natural gas product gas successively returns to aftercooler 6 through pipeloop with before
In cooler 4, heat exchange is carried out with the raw natural gas in aftercooler 6 and preceding cooler 4, after cold recovery, obtains dry gas 10.
Embodiment 2
(1) natural gas for entering the factory through (40 DEG C of temperature, pressure 10.5MPa) of gas collection header 1, in production separator 2
It is separated, removes the water and liquid impurity in natural gas, then carried out in air cooler 3 air-cooled, so that temperature is down to 26 DEG C, so
Enter in preceding cooler 4 afterwards, carries out heat exchange with cryogenic natural gas product gas, temperature is made to be down to 16 DEG C；Again through gas separator 5 into
Row separation, removes the lime set in natural gas, obtains raw natural gas；
(2) atomizer is set in the pipeline of connection gas separator 5 and aftercooler 6, the first note of wax removing agent in Fig. 2
The position of access point 12 draws a connecting pipeline from the storage tank 15 for storing the wax removing agent, connects the atomizer, storage tank 15 and mist
Change and first pressure metering pump 16 is set in the connecting pipeline between device, it will be described in storage tank 15 with the first pressure metering pump 16
Wax removing agent is pumped into the atomizer, after atomizer is atomized, into raw natural gas, is mixed with raw natural gas,
Obtain the first mixture；First mixture enters in aftercooler 6, carries out heat exchange with cryogenic natural gas product gas, makes
Temperature is down to 0 DEG C, wherein 30 kg/day of additional amount of the wax removing agent.
(3) atomizer, the first note of wax removing agent in Fig. 2 are set in the pipeline of cooler 6 and throttle expansion valve 7 upon connection
The position of access point 13 draws a connecting pipeline from the storage tank 15 for storing the wax removing agent, connects the atomizer, storage tank 15 and mist
Change and second pressure metering pump 17 is set in the connecting pipeline between device, it will be described in storage tank 15 with the second pressure metering pump 17
Wax removing agent is pumped into the atomizer, as shown in fig. 6, being mixed, being obtained with first mixture after atomizer is atomized
To the second mixture, wherein the additional amount of the wax removing agent is 20 kg/days；
(4) the second mixture described in carries out throttling expansion through throttle expansion valve 7, and the temperature before throttling expansion is 0 DEG C, pressure
Power is 10.5MPa, and the temperature after throttling expansion is -18 DEG C, and pressure 6.5MPa is entered back into low temperature gas-liquid separator 8 and carried out
Separation, obtains dewaxing natural gas, and dewaxing natural gas obtains cryogenic natural gas product gas, the liquid of abjection by further separation
State wax enters alcohol hydrocarbon process flow with alcohol hydrocarbon liquid 9；Cryogenic natural gas product gas successively returns to aftercooler 6 through pipeloop with before
In cooler 4, heat exchange is carried out with the raw natural gas in aftercooler 6 and preceding cooler 4, after cold recovery, obtains dry gas 10.
Embodiment 3
As shown in figure 3, (1) enters the natural gas of the factory through (40 DEG C of temperature, pressure 10.5MPa) of gas collection header 1, producing
It is separated in separator 2, removes the water and liquid impurity in natural gas, then carried out in air cooler 3 air-cooled, drop temperature
To 26 DEG C, subsequently into preceding cooler 4, heat exchange is carried out with cryogenic natural gas product gas, temperature is made to be down to 16 DEG C；Again through gas
Separator 5 is separated, and is removed the lime set in natural gas, is obtained raw natural gas；
(2) atomizer is set in the pipeline of connection gas separator 5 and aftercooler 6, the first note of wax removing agent in Fig. 3
The position of access point 12 draws a connecting pipeline from the storage tank for storing the wax removing agent, connects the atomizer, storage tank and atomizer
Between connecting pipeline on a metering pump is set, the wax removing agent in storage tank is pumped into the atomizer with metering pump, pass through
After atomizer atomization, into raw natural gas, is mixed with raw natural gas, obtain the first mixture；Described first
Mixture enters in aftercooler 6, carries out heat exchange with cryogenic natural gas product gas, so that temperature is down to 0 DEG C, wherein the paraffin removal
30 kg/day of additional amount of agent.
(3) atomizer, wax removing agent first in Fig. 3 are set in the pipeline of the lower tube side right end seal head of cooler 6 upon connection
The position of decanting point 14 draws a connecting pipeline from the storage tank for storing the wax removing agent, connects the atomizer, storage tank and atomization
One metering pump is set in the connecting pipeline between device, the wax removing agent in storage tank is pumped into the atomizer with metering pump,
It after atomizer is atomized, is mixed with first mixture, obtains the second mixture, wherein the wax removing agent adds
Entering amount is 20 kg/days；
(4) the second mixture described in carries out throttling expansion through throttle expansion valve 7, and the temperature before throttling expansion is 0 DEG C, pressure
Power is 10.5MPa, and the temperature after throttling expansion is -18 DEG C, and pressure 6.5MPa is entered back into low temperature gas-liquid separator 8 and carried out
Separation, obtains dewaxing natural gas, and dewaxing natural gas obtains cryogenic natural gas product gas, the liquid of abjection by further separation
State wax enters alcohol hydrocarbon process flow with alcohol hydrocarbon liquid 9；Cryogenic natural gas product gas successively returns to aftercooler 6 through pipeloop with before
In cooler 4, heat exchange is carried out with the raw natural gas in aftercooler 6 and preceding cooler 4, after cold recovery, obtains dry gas 10.
Embodiment 4
(1) natural gas for entering the factory through (40 DEG C of temperature, pressure 10.5MPa) of gas collection header 1, in production separator 2
It is separated, removes the water and liquid impurity in natural gas, then carried out in air cooler 3 air-cooled, so that temperature is down to 26 DEG C, so
Enter in preceding cooler 4 afterwards, carries out heat exchange with cryogenic natural gas product gas, temperature is made to be down to 16 DEG C；Again through gas separator 5 into
Row separation, removes the lime set in natural gas, obtains raw natural gas；
(2) atomizer is set in the pipeline of connection gas separator 5 and aftercooler 6, the first note of wax removing agent in Fig. 4
The position of access point 12 draws a connecting pipeline from the storage tank for storing the wax removing agent, connects the atomizer, storage tank and atomizer
Between connecting pipeline on a metering pump is set, the wax removing agent in storage tank is pumped into the atomizer with metering pump, pass through
After atomizer atomization, into raw natural gas, is mixed with raw natural gas, obtain the first mixture；Described first
Mixture enters in aftercooler 6, carries out heat exchange with cryogenic natural gas product gas, so that temperature is down to 0 DEG C, wherein the paraffin removal
30 kg/day of additional amount of agent.
(3) atomizer, wax removing agent first in Fig. 4 are set in the pipeline of the lower tube side right end seal head of cooler 6 upon connection
The position of decanting point 14 draws a connecting pipeline from the storage tank for storing the wax removing agent, connects the atomizer, storage tank and atomization
One metering pump is set in the connecting pipeline between device, the wax removing agent in storage tank is pumped into the atomizer with metering pump,
It after atomizer is atomized, is mixed with first mixture, obtains the second mixture, wherein the wax removing agent adds
Entering amount is 20 kg/days；
(4) atomizer, the first note of wax removing agent in Fig. 4 are set in the pipeline of cooler 6 and throttle expansion valve 7 upon connection
The position of access point 13 draws a connecting pipeline from the storage tank for storing the wax removing agent, connects the atomizer, storage tank and atomizer
Between connecting pipeline on a metering pump is set, the wax removing agent in storage tank is pumped into the atomizer with metering pump, pass through
After atomizer atomization, is mixed with second mixture, obtain third mixture, wherein the addition of the wax removing agent
Amount is 10 kg/days；
(5) the third mixture described in carries out throttling expansion through throttle expansion valve 7, and the temperature before throttling expansion is 0 DEG C, pressure
Power is 10.5MPa, and the temperature after throttling expansion is -18 DEG C, and pressure 6.5MPa is entered back into low temperature gas-liquid separator 8 and carried out
Separation, obtains dewaxing natural gas, and dewaxing natural gas obtains cryogenic natural gas product gas, the liquid of abjection by further separation
State wax enters alcohol hydrocarbon process flow with alcohol hydrocarbon liquid 9；Cryogenic natural gas product gas successively returns to aftercooler 6 through pipeloop with before
In cooler 4, heat exchange is carried out with the raw natural gas in aftercooler 6 and preceding cooler 4, after cold recovery, obtains dry gas 10.
In the embodiments of the present invention 1, embodiment 2, embodiment 3 and embodiment 4:
The filling pressure of wax removing agent 1: slightly above production pressure 10.5MPa.
Wax removing agent fills unit
1) wax-proofing agent holding vessel specification: normal pressure tank, 3m3, 316L stainless steel.
2) metering pump: meter Dun Luo plunger pump, 15MPa, 3 ls/h.
3) it atomizer: needs to select according to scene.
4) distribution box: explosion-proof grade is powered to metering pump.
5) connecting pipeline: metering pump front tube line selection 2.5MPa, pump rear line select 15MPa, 316L stainless steel.
The embodiments of the present invention 1, embodiment 2, embodiment 3 and embodiment 4 achieve following technical effect:
(1) after filling wax removing agent, it is existing to eliminate the paraffin blockage of aftercooler and low temperature gas-liquid separator in natural gas processing process
As ensure that the safe operation for being dehydrated de- hydrocarbon device.
(2) eliminating aftercooler paraffin blockage phenomenon keeps tube side pressure difference to stablize, and reduces the failure of low temperature gas-liquid separator inner member
Risk, fundamentally improve the treatment effeciency for being dehydrated de- hydrocarbon device.
(3) hydrocarbon dew point control is at -8 DEG C hereinafter, -6 DEG C of 2 DEG C of reduction (countries of the product gas obtained than existing de-waxing apparatus
Standard: hydrocarbon is not precipitated under the pressure and temperature of natural gas interface point)；Water dew point control is at -18 DEG C hereinafter, than existing de-waxing apparatus
- 14 DEG C of obtained product gas reduce by 4 DEG C, and (national standard: water dew point is lower by 5 than minimum transport environment temperature under highest operating pressure
DEG C), improve the quality pass rate of product gas.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that the utility model
Embodiment can be practiced without these specific details.In some instances, well known structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
The utility model is limited it should be noted that above-described embodiment illustrates rather than the utility model,
And those skilled in the art can be designed alternative embodiment without departing from the scope of the appended claims.In right
In it is required that, any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" is not arranged
Except there are component not listed in the claims or components.Word "a" or "an" before component or component is not excluded for
There are multiple such components or components.The utility model can be realized by means of including the device of several different components.
If several in these components can be through the same component item come specific body in the claim for listing dry part
It is existing.The use of word first, second, and third does not indicate any sequence.These words can be construed to title.
Numberical range described in the utility model includes numerical value all within the scope of this, and including any within the scope of this
The value range of two values composition.
Technical characteristic in the utility model claims and/or specification can be combined, and a combination thereof mode is unlimited
The combination obtained in claim by adduction relationship.Group is carried out by the technical characteristic in claim and/or specification
Close obtained technical solution and the protection scope of the utility model.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention,
It is still within the scope of the technical solutions of the present invention.
Claims (10)
- It is swollen including at least the preceding cooler, gas separator, aftercooler, throttling being set in sequence 1. a kind of de-waxing apparatus of natural gas Swollen valve and low temperature gas-liquid separator, which is characterized in that it further include wax removing agent filling unit,The wax removing agent filling unit includes at least:Storage tank, for storing wax removing agent；Pump, for conveying the wax removing agent；WithAt least one atomizer, for the wax removing agent to be atomized；The described atomizer setting in gas separator between throttle expansion valve, it is described for the wax removing agent to be added to In de-waxing apparatus.
- 2. the de-waxing apparatus of natural gas according to claim 1, which is characterized in thatThe atomizer is set in the pipeline of the connection gas separator and aftercooler；And/or described in connection The setting atomizer in the pipeline of the lower tube side right end seal head of aftercooler；And/orThe atomizer is set in the pipeline of the connection aftercooler and throttle expansion valve.
- 3. the de-waxing apparatus of natural gas according to claim 1, which is characterized in thatThe atomizer is connected at least one following position by pipeline:Tube side right end seal head and throttle expansion valve front end airflow pipeline under aftercooler admission line, aftercooler, for shape will to be atomized The wax removing agent of state is added in the de-waxing apparatus.
- 4. the de-waxing apparatus of natural gas according to claim 1-3, which is characterized in that it further include pipeloop, By the low temperature gas-liquid separator, aftercooler, the series connection of preceding cooler, for by the exit gas of the low temperature gas-liquid separator It is fed sequentially into the aftercooler and preceding cooler.
- 5. the de-waxing apparatus of natural gas according to any one of claim 1-3, which is characterized in that the atomizer is extremely Include: lessAt least one nozzle, for the wax removing agent to be sprayed；Inlet tube, for conveying the wax removing agent into the nozzle；The nozzle is communicated with the inlet tube, and the inlet tube is communicated with the storage tank, and institute is arranged in the pump Between the inlet tube and the storage tank stated.
- 6. the de-waxing apparatus of natural gas according to claim 5, which is characterized in that the front end of the nozzle is protruded into be added In the pipeline of note.
- 7. the de-waxing apparatus of natural gas according to claim 5, which is characterized in that the nozzle is pressure type atomization spray Mouth, rotation type atomization nozzle, pneumatic type atomizer, ultrasonic type atomizer, impacting type atomizer or electrostatic atomization nozzle.
- 8. the de-waxing apparatus of natural gas according to claim 7, which is characterized in that the nozzle is pressure nozzle.
- 9. the de-waxing apparatus of natural gas according to claim 1, which is characterized in that further include that sequentially connected gas collection converges Pipe, production separator and air cooler；The air cooler is connect with the preceding cooler by pipeline.
- 10. the de-waxing apparatus of natural gas according to claim 9, which is characterized in that further include dry gas coalescer and lime set Storage tank；The dry gas coalescer is connect with low temperature gas-liquid separator by pipeline；The lime set storage tank is connect with the dry gas coalescer by pipeline.
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| CN201820868506.8U CN208332862U (en) | 2018-06-06 | 2018-06-06 | The de-waxing apparatus of natural gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147011A (en) * | 2020-09-04 | 2022-03-08 | 中国石油天然气股份有限公司 | Blockage relieving method for salt crystallization blockage of natural gas pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147011A (en) * | 2020-09-04 | 2022-03-08 | 中国石油天然气股份有限公司 | Blockage relieving method for salt crystallization blockage of natural gas pipeline |
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