CN202865185U - Improved paraffin hydrogenation test device - Google Patents
Improved paraffin hydrogenation test device Download PDFInfo
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- CN202865185U CN202865185U CN 201220546211 CN201220546211U CN202865185U CN 202865185 U CN202865185 U CN 202865185U CN 201220546211 CN201220546211 CN 201220546211 CN 201220546211 U CN201220546211 U CN 201220546211U CN 202865185 U CN202865185 U CN 202865185U
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- heat conduction
- conduction oil
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- pressure separator
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Abstract
The utility model discloses an improved paraffin hydrogenation test device. A heat conduction oil tank and a pressure-stabilizing tank are arranged in series on a gas path pipeline between a high-pressure separator and a high-partial-pressure transmitter, and ribbon heaters are respectively wound on the high-pressure separator, the heat conduction oil tank, the pipelines between the high-pressure separator and the heat conduction oil tank, and the pipelines between the heat conduction oil tank and the pressure-stabilizing tank. The paraffin hydrogenation test device disclosed by the utility model solves the problems of low safety factor, easy overpressure, false pressure display and the like of the conventional paraffin hydrogenation test device, improves operation safety, and is simple in structure, conveniently maintained and simple to operate.
Description
Technical field
The utility model belongs to a kind of modified version wax hydrofining testing apparatus, particularly is applicable to the wax hydrofining experimental installation of petrochemical process.
Background technology
The wax hydrofining testing apparatus is as raw material take paraffin, mix with hydrogen and after heating, to enter fixed-bed reactor and catalyzer carries out hydrogenation reaction, the paraffin of process desulfurization, denitrogenation, aromatics isomerization enters high-pressure separator with oil gas and carries out gas-oil separation, enter products pot through the paraffin after the gas-oil separation by reducing valve, draining valve, enter scrubber tower through the recycle hydrogen after the separation of oil gas high pressure with washing water, by washing water the ammonium salt in the recycle hydrogen is washed off, the recycle hydrogen after the washing mixes rear suppressing by circulating hydrogen compressor with new hydrogen and recycles.
The paraffin of wax hydrofining is generally No. 60 waxes (straight-chain paraffin), No. 85 waxes (containing isomerized alkyl) do not wait, their condensation point is very high, the zero pour of No. 60 waxes is more than 60 ℃, the zero pour of No. 85 waxes is more than 85 ℃, the electricity insulation is adopted in the at present insulation of wax hydrofining testing apparatus more, because the ribbon heater that the electricity insulation twines not fully evenly, each of high pressure pipe valve member and container temperature can not keep same temperature.So, generally the insulation take No. 60 wax as the wax hydrofining testing apparatus of raw material is about 110 ~ 120 ℃, generally the insulation take No. 85 wax as the wax hydrofining testing apparatus of raw material is about 150 ~ 160 ℃, and all the pipeline holding temperature than common hydrogenation test apparatus is high a lot.
More accurate for the data that device is turned round out, level of automation is higher, the wax hydrofining device has adopted electric components such as the pressure sensing transmitter of a lot of precisions.But these accurate electric components can not use under very high temperature, temperature one high they will be malfunctioning, just can not twine the ribbon heater from the place of components and parts close to very like this.The pressure unit of installing on the high-pressure separator gas circuit, it has the pressure that can show high-pressure separator, and the effect of pressure superelevation alarm.In the existing hydrogenation test apparatus, in case the control of the liquid level of high-pressure separator is bad, stop up the filter stoppage of draining valve or the draining valve needle if any dirt, or draining valve is automatically malfunctioning, or liquid level control is malfunctioning etc. former thereby cause not oil extraction of high score, the liquid level of whiteruss in high-pressure separator will constantly rise, and when entering into the gas circuit of high-pressure separator.Since near the not insulation pressure unit on the high-pressure separator, whiteruss just be set in pressure unit near.Consider that ammonium salt is difficult for crystallization in time more than 80 ℃ in the recycle hydrogen gas, and soluble in water, in the high-pressure separator gas circuit to all being tied with insulation with the waterflood-transmission line junction; And the waterflood-transmission line junction and to the essentially no ribbon heater of the pipeline between the scrubber tower or ribbon heater insulation lower; The liquid wax of scurrying into the high score gas circuit just will be set in high-pressure separator gas circuit and waterflood-transmission line junction, and cause the whole system pressure rise of wax hydrofining testing apparatus.Because whiteruss is set near the pressure unit of high-pressure separator, although system pressure rises, but the pressure the when pressure that pressure unit shows or normal value easily makes the wax hydrofining testing apparatus in danger, if can not in time find, can cause serious security incident to occur.
Simultaneously, because whiteruss is set near the pressure unit of high-pressure separator, when the liquid level of high-pressure separator all subtracts sky, after pressure bleeds off, pressure is still arranged between the gas circuit of high-pressure separator and the pressure unit, make troubles to dismounting, also have potential safety hazard.
Summary of the invention
For the deficiencies in the prior art, the utility model provide a kind of simple in structure, with low cost, volume is little, safety coefficient is high, result of use is good and the modified version wax hydrofining testing apparatus of convenient operation.
A kind of modified version wax hydrofining testing apparatus, comprise at least one reactor, raw oil pump, material tank, high-pressure separator, pressure unit, scrubber tower and circulating hydrogen compressor etc., it is characterized in that, to the series connection of the gas circuit pipeline between high-pressure separator (high score) pressure unit two pressure pans are set in described high-pressure separator, one is the heat conduction oil tank, another is buffer tank, can play and can transmit pressure, can prevent that again paraffin is set in the purpose in the pipeline.
According to wax hydrofining testing apparatus of the present utility model, wherein the gas circuit of high-pressure separator is connected with the heat conduction oil tank first, is connected with the high partial pressures power transmitter with buffer tank successively again.In the wherein said heat conduction oil tank liquid thermal conductivity oil is housed, is filled with proper amount of gas such as nitrogen in the described buffer tank; The buffer tank outlet that increases is connected with pressure unit.Install and maintenance for convenient, prevent experimental installation go into operation before or stop work after thermal oil seal in the buffer tank, between the gas circuit and heat conduction oil tank of high-pressure separator, between heat conduction oil tank and the buffer tank, between buffer tank and the high partial pressures power transmitter stopping valve can also be set.Wherein all be wound with the ribbon heater on the gas circuit pipeline between gas circuit pipeline and heat conduction oil tank and the buffer tank between high-pressure separator, heat conduction oil tank, high-pressure separator and the heat conduction oil tank, described buffer tank and and the high partial pressures power transmitter between pipeline on then need not to twine the ribbon heater.
In the hydrogenation test apparatus of the present utility model, character according to hydrogenating materials paraffin, density is about 0.8200kg/L, and 100 ℃ of characteristics such as density 0.73 ~ 0.77kg/L can be selected the thermal oil (because after the reaction in the paraffin without aromatic hydrocarbon substance) of a kind of naphthenic type or aromatic hydrocarbon type.The density of thermal oil is generally between 0.90 ~ 1.05kg/L.Because the chemical property of thermal oil is not identical with the chemical property of paraffin, so basically do not dissolve each other between them.
Compared with prior art, wax hydrofining testing apparatus of the present utility model has the following advantages:
1, when the high-pressure separator liquid level of wax hydrofining testing apparatus out of control, the not oil extraction of draining valve of high-pressure separator, cause the liquid level of whiteruss in high-pressure separator constantly to rise, when whiteruss is filled high-pressure separator, when entering into the waterflood-transmission line junction along the gas circuit of high-pressure separator, because the gas circuit of high-pressure separator is not incubated with waterflood-transmission line mixing place or holding temperature can not be too high, whiteruss just is set in high score gas circuit pipeline and waterflood-transmission line junction, the whole system pressure rise that causes the wax hydrofining testing apparatus, part whiteruss will seal in the tank that thermal oil is housed, because whiteruss and thermal oil do not dissolve each other substantially, and whiteruss is less than thermal oil density, basically whiteruss just swims on the liquid level of thermal oil, so, the pressure unit of high-pressure separator just can demonstrate system pressure truly, and pressure begins to report to the police after reaching the upper limit, brings convenience for correctly in time fixing a breakdown; When the liquid level of high-pressure separator was lowered, system pressure also descended thereupon, and the whiteruss that enters in the heat conduction oil tank has been got back to again in the high-pressure separator, and the thermal oil in the heat conduction oil tank can be reused.
2, wax hydrofining testing apparatus of the present utility model is simple in structure, carries out a little on the basis of original wax hydrofining testing apparatus and changes, and can reach the purpose that improves wax hydrofining testing apparatus safety coefficient, easy to maintenance, reduce investment outlay, easy handling is raised the efficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model wax hydrofining testing apparatus.
Fig. 2 is the structural representation of the utility model wax hydrofining testing apparatus mesohigh separator.
Wherein 1 is material tank, and 2 is raw oil pump, and 3 is reactor, and 4 is high-pressure separator, and 5 is water wash column, and 6 is circulating hydrogen compressor, and 7 is pressure unit, and 8 are the heat conduction oil tank, and 9 is buffer tank, and 10 is the ribbon heater, and 11 is waterflood-transmission line.
Embodiment
Specify structure and the working process of the utility model modified version wax hydrofining testing apparatus below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model wax hydrofining testing apparatus and common hydrogenation test apparatus are basically identical, generally include material tank 1, raw oil pump 2, reactor 3, high-pressure separator 4, high partial pressures power transmitter 7, scrubber tower 5 and circulating hydrogen compressor 6.Material tank 1 is connected outlet with raw oil pump 2 successively by pipeline and is connected with reactor, reactor 3 exports and is connected with high-pressure separator 4 entrances.Wherein the gas circuit pipeline of high-pressure separator 4 is divided into two-way, the one tunnel with link to each other with scrubber tower 5 again after waterflood-transmission line 11 is connected, the outlet of scrubber tower 5 gas circuits is connected with circulating hydrogen compressor 6, circulating hydrogen compressor 6 exports and then is connected with reactor 3.
As shown in Figure 2, another road of high-pressure separator 4 gas circuits then is connected by heat conduction oil tank 8, buffer tank 9 and high partial pressures power transmitter 7 successively.Wherein the position of heat conduction oil tank 8 and buffer tank 9 is substantially parallel, and the two can be set up in parallel.The position of buffer tank 9 can a little more than heat conduction oil tank 8 some, high partial pressures power transmitter 7 generally be installed in buffer tank 9 directly over.At the inside of heat conduction oil tank 8 falling heat-transfer oil, the inside of buffer tank 9 is empty, can fill some nitrogen.Wherein to the pipeline between the buffer tank 9, all twine ribbon heater 10 at high-pressure separator 4, heat conduction oil tank 8, heat conduction oil tank 8, be used for to tank body and pipeline heating.Buffer tank 9 and and high partial pressures power transmitter 7 between pipeline on then need not to twine the ribbon heater.Generally, in high-pressure separator 4 gas circuit pipelines and waterflood-transmission line 11 junctions with this junction to being that the ribbon heater is not set between the scrubber tower 5; Perhaps the ribbon heater can be set, but because the needs of water filling washing, the insulation of this ribbon heater, place also can be lower, well below melting point of paraffin wax.
The principle of work of the utility model wax hydrofining testing apparatus is as follows: when the liquid level of high-pressure separator 4 is out of control, the not oil extraction of draining valve of high-pressure separator 4, cause the liquid level of whiteruss in high-pressure separator 4 constantly to rise, when whiteruss is filled high-pressure separator 4, when entering into the waterflood-transmission line junction along the gas circuit of high-pressure separator 4, because the gas circuit of high-pressure separator 4 and waterflood-transmission line junction and too low less than insulation or holding temperature to the entrance of scrubber tower 5, whiteruss just easily is set in high score gas circuit and waterflood-transmission line junction, causes the whole system pressure rise of wax hydrofining testing apparatus.Part whiteruss will seal in the heat conduction oil tank 8, because heat conduction oil tank 8 is provided with the electric heating thermal insulation band, it is liquid that paraffin still keeps in heat conduction oil tank 8, high partial pressures power transmitter 7 just can demonstrate truly system pressure and report to the police, avoid the generation of security incident, bring convenience for correctly in time fixing a breakdown.
Claims (8)
1. modified version wax hydrofining testing apparatus, comprise at least one reactor, raw oil pump, material tank, high-pressure separator, high partial pressures power transmitter, scrubber tower and circulating hydrogen compressor, it is characterized in that, connect with the gas circuit pipeline between the high partial pressures power transmitter in described high-pressure separator two pressure pans are set, one is the heat conduction oil tank, and another is buffer tank.
2. according to device claimed in claim 1, it is characterized in that, described high-pressure separator is connected with the heat conduction oil tank first by gas circuit pipeline, is connected with the high partial pressures power transmitter with buffer tank successively again.
3. according to device claimed in claim 2, it is characterized in that, on the pipeline between described high-pressure separator, heat conduction oil tank, high-pressure separator and the heat conduction oil tank and the gas circuit pipeline between heat conduction oil tank and the buffer tank, all twine the ribbon heater.
4. according to device claimed in claim 1, it is characterized in that, in the described heat conduction oil tank liquid thermal conductivity oil is housed, be filled with gas in the described buffer tank.
5. according to device claimed in claim 1, it is characterized in that, described heat conduction oil tank and buffer tank are set up in parallel.
6. according to device claimed in claim 5, it is characterized in that, the position of described buffer tank is higher than the heat conduction oil tank.
7. according to device claimed in claim 1, it is characterized in that, described high partial pressures power transmitter be installed in buffer tank directly over.
8. according to device claimed in claim 3, it is characterized in that, described buffer tank and with the gas circuit pipeline of high partial pressures power transmitter on need not to twine the ribbon heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220546211 CN202865185U (en) | 2012-10-24 | 2012-10-24 | Improved paraffin hydrogenation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220546211 CN202865185U (en) | 2012-10-24 | 2012-10-24 | Improved paraffin hydrogenation test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202865185U true CN202865185U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220546211 Expired - Lifetime CN202865185U (en) | 2012-10-24 | 2012-10-24 | Improved paraffin hydrogenation test device |
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| Country | Link |
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| CN (1) | CN202865185U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911178A (en) * | 2013-11-28 | 2014-07-09 | 大连隆星新材料有限公司 | Processing apparatus for paraffin hydrogenation |
-
2012
- 2012-10-24 CN CN 201220546211 patent/CN202865185U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911178A (en) * | 2013-11-28 | 2014-07-09 | 大连隆星新材料有限公司 | Processing apparatus for paraffin hydrogenation |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |