CN207571085U - A kind of experimental provision for preparing isooctane - Google Patents
A kind of experimental provision for preparing isooctane Download PDFInfo
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- CN207571085U CN207571085U CN201721655338.6U CN201721655338U CN207571085U CN 207571085 U CN207571085 U CN 207571085U CN 201721655338 U CN201721655338 U CN 201721655338U CN 207571085 U CN207571085 U CN 207571085U
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Abstract
The utility model discloses a kind of experimental provisions for preparing isooctane, and electronic scale is equipped in the bottom of amount liquid bottle including iso-butane gas cylinder, butylene gas cylinder, mass flowmenter, fixed bed, product liquid bottle, gas bottle and amount liquid bottle.The utility model measures the inlet amount of butene gas and iso-butane by using gas mixer and the first mass flowmenter respectively, the addition quality of iso-butane and butylene is weighed by the first electronic scale, the addition quality of nitrogen is weighed by the second mass flowmenter, then unreacted gaseous mass is weighed by drainage and electronic scale, it is finally that the consumption of raw material is calculated with mass difference method, i.e. by the addition for the i.e. controllable reaction gas of quality for detecting unreacting gas in real time, it ensure that accuracy prepared by isooctane, compared with prior art, with simple in structure, it is easy to operate, the low-cost advantageous effect of experimental facilities, laboratory is very suitable for use the scientific research of isooctane preparation process.
Description
Technical field
The utility model is related to a kind of experimental facilities, and in particular to a kind of experimental provision for preparing isooctane belongs to chemical industry
Test equipment technology field.
Background technology
Alkylation refers to the position of the chemical addition reaction, the in the reaction reactive hydrogen atom in alkane molecule of alkane and alkene
It puts and is replaced by alkene.Alkylation unit feedstock is based on iso-butane in catalytic cracker gas and isobutene, butylene one.Alkylation
Oil is high by 90~98 with octane number, and the performance that reconciles is good, and volatility, combustion cleaning etc. become high-quality tune oil ingredient.Raw material is to urge cracking
Liquid hydrocarbon through qi leel come out four component of carbon in iso-butane and butylene, using sulfuric acid as catalyst, low temperature liquid phase reaction production
High octane gasoline component (gasoline alkylate) finished product is isooctane, iso-butane, normal butane, weight compound.
At present, technical octane production method mainly has sulfuric acid process, hydrogen fluoride and solid acid system etc., and wherein sulfuric acid process is
The technique generally used both at home and abroad at present.The main reaction of isooctane production is alkylated reaction, mainly using iso-butane and light alkene
For hydrocarbon (such as butylene) under sulfuric acid catalysis effect, reaction generates high-octane trimethylpentane, in addition to the above-mentioned main reaction referred to,
Simultaneously with side reactions such as esterification, disproportionation, cracking, polymerizations.It is not environmentally protective enough due to being used as catalyst using liquid weight acid,
Therefore sight has been invested acid stronger molecular sieve catalyst by many laboratory research persons both at home and abroad, and molecular sieve catalyst is selected
The effect of shape catalysis, can be shape-selective to reactant, shape-selective to product, shape-selective to reaction intermediates, it will be conducive to isooctane
Production and manufacture.But the application of the catalyst is not yet ripe, needs to realize industrially after carrying out a certain number of experiments
Production.And in process of experimental, since raw material iso-butane and light olefin are gas at normal temperatures and pressures, it is unfavorable for experiment
Charging control and to apply to experimental facilities cost excessively high, needs repeatedly to sample in addition and is analyzed and researched, grasped during the experiment
Make complicated cumbersome.There is presently no the experiments for preparing isooctane that a kind of base with iso-butane and light olefin alkane is turned to raw material
Device.
Utility model content
For above-mentioned deficiency, the technical problem to be solved by the utility model is to provide a kind of simple in structure, equipment into
This cheap experimental provision for preparing isooctane.
To achieve the above object, the utility model is achieved through the following technical solutions：
A kind of experimental provision for preparing isooctane including iso-butane gas cylinder, butylene gas cylinder, delivery pipe, mass flowmenter, is consolidated
Fixed bed, product liquid bottle, gas bottle and amount liquid bottle, delivery pipe is accessed in the gas outlet of the iso-butane gas cylinder after the first control valve
Beginning, the gas outlet of the butylene gas cylinder accesses the beginning of delivery pipe after the second control valve, the end of the delivery pipe according to
The secondary entrance that fixed bed is accessed after check valve, the first mass flowmenter, gas mixer and input control valve, the fixed bed
Outlet accessed in product liquid bottle after output control valve, the gas bottle and product liquid bottle be attached by conduit and
A gas chromatograph is connected in the gas outlet of gas bottle, one end that the 4th control valve and conduit are equipped on the conduit is inserted into
In product liquid bottle, in its other end insertion gas bottle, the amount liquid bottle is connect by connecting tube with gas bottle, the connecting tube
One end be inserted into the bottom of gas bottle, its other end be inserted into it is internal be loaded in the amount liquid bottle of aqueous solution, in the bottom of amount liquid bottle
Equipped with electronic scale, a cooling device is installed on product liquid bottle.
In said program, in order to ensure the accuracy of the safety of experiment and data, nitrogen sweep blowing apparatus can also be included,
The nitrogen sweep blowing apparatus includes nitrogen cylinder, and the gas outlet of the nitrogen cylinder is successively through third control valve and the second mass flowmenter
In delivery pipe where being connected to afterwards between gas mixer and input control valve.
In said program, in order to which gas mixing is uniform, having heaters, the heating can be installed in the both sides of gas mixer
A temperature control modules are connected on device.
In said program, the bottom of the fixed bed is equipped with for heat-insulated silica wool, and be equipped on a fixed bed
One pressure gauge.
In said program, the cooling device may include the internal cooling bottle for being loaded with cooling agent, the mouth of the cooling bottle
Diameter is more than the bore of product liquid bottle, and the product liquid bottle is mounted on the inside of cooling bottle.
The beneficial effects of the utility model are：
Since the iso-butane as reaction raw materials and butylene are gas at normal temperatures and pressures, it is unfavorable for the charging in laboratory
Control, the utility model by using gas mixer and the first mass flowmenter measure respectively butene gas and iso-butane into
Then doses is weighed the addition quality of iso-butane and butylene by the first electronic scale, nitrogen is weighed by the second mass flowmenter
The addition quality of gas, then weighs unreacted gaseous mass, while pass through gas-chromatography by drainage and electronic scale
Instrument on-line analysis detects to obtain the volume ratio of iso-butane and butylene, is finally that the consumption of raw material is calculated with mass difference method, i.e.,
The quality of the i.e. controllable reaction gas of quality by detecting unreacting gas in real time, ensure that accuracy prepared by isooctane,
It ensure that the preciseness of experiment.Compared with prior art, have simple in structure, easy to operate, experimental facilities is low-cost to have
Beneficial effect is very suitable for laboratory and the scientific research of isooctane preparation process is used.
Description of the drawings
Fig. 1 be this prepare isooctane experimental provision structure diagram.
Figure label is：1st, gas chromatograph；2nd, iso-butane gas cylinder；3rd, butylene gas cylinder；4th, the first control valve；5th, the second control
Valve processed；6th, check valve；7th, the first mass flowmenter；8th, nitrogen cylinder；9th, third control valve；10th, heater；11st, gas mixer；
12nd, input control valve；13rd, pressure gauge；14th, fixed bed；15th, the second mass flowmenter, 16, silica wool；17th, output control valve；
18th, product liquid bottle；19th, bottle is cooled down；20th, the 4th control valve；21st, gas bottle；22nd, electronic scale；23rd, measure liquid bottle, 24, connection
Pipe, 25, delivery pipe.
Specific embodiment
As shown in Figure 1, a kind of experimental provision for preparing isooctane, including iso-butane gas cylinder 2, butylene gas cylinder 3, delivery pipe
25th, mass flowmenter, fixed bed 14, product liquid bottle 18, gas bottle 21 and amount liquid bottle 23.
The beginning of delivery pipe 25 is accessed in the gas outlet of the iso-butane gas cylinder 2 after the first control valve 4.The butylene gas cylinder
The beginning of delivery pipe 25 is accessed in 3 gas outlet after the second control valve 5.The end of the delivery pipe 25 is successively through check valve 6,
The entrance of fixed bed 14 is accessed after one mass flowmenter 7, gas mixer 11 and input control valve 12.In the present embodiment, in order to
Make two kinds of gas mixings uniform, having heaters 10 in the both sides of gas mixer 11 is installed, one is connected on the heater 10
Temperature control modules.One pressure gauge 13 at the top of fixed bed 14 is installed, is equipped in the bottom of fixed bed 14 for heat-insulated
Silica wool 16.The outlet of the fixed bed 14 is accessed after output control valve 17 in product liquid bottle 18.
The gas bottle 21 is attached by conduit with product liquid bottle 18 and is connected in the gas outlet of gas bottle 21
One gas chromatograph 1.The gas chromatograph 1 is used to carry out on-line analysis to unreacted iso-butane and butene gas, to obtain
The volume ratio of two kinds of gas after must mixing.One end that the 4th control valve 20 and conduit are equipped on the conduit is inserted into
In product liquid bottle 18, in its other end insertion gas bottle 21.The amount liquid bottle 23 is connect by connecting tube 24 with gas bottle 21.
The bottom of gas bottle 21 is inserted into one end of the connecting tube 24, its other end is inserted into the internal amount liquid bottle 23 for being loaded with aqueous solution
It is interior.I.e. by by the gas amount of the being discharged into liquid bottle 23 in gas bottle 21, so that the quality of solution changes in amount liquid bottle 23.
Electronic scale 22 is equipped in the bottom of amount liquid bottle 23, to weigh the quality of discharge residual gas.It is installed on product liquid bottle 18
There is a cooling device.In the present embodiment, the cooling device includes the cooling bottle 19 that inside is loaded with cooling agent, the cooling agent
It is specifically as follows trash ice or ice water.The bore of the cooling bottle 19 is more than the bore of product liquid bottle 18, and the product liquid
Bottle 18 is mounted on the inside of cooling bottle 19.
For the safety of experiment and the accuracy of experimental data, nitrogen sweep blowing apparatus is further included, the nitrogen sweep blows dress
It puts including nitrogen cylinder 8, the gas outlet of the nitrogen cylinder 8 is connected to after 9 and second mass flowmenter 15 of third control valve successively
In delivery pipe 25 where between gas mixer 11 and input control valve 12.
When the utility model is used, step specific as follows：
1) catalyst sample of certain mass was weighed before this, can specifically be selected molecular sieve catalyst, is then charged into fixation
In 14 reactors of bed；
2) it before reacting, is closed after carrying out purging 20-25mim to 14 reactor of fixed bed with high-purity nitrogen, will consolidate
Air discharge in 14 spool of fixed bed, while pass through the output mass M 11 of the second mass flowmenter 15 metering nitrogen；
3) be separately turned on the first control valve 4, check valve 6, the first mass flowmenter 7 and gas mixer 11, iso-butane into
Material, controls its inlet amount, and passes through the first mass flowmenter 7 and write down the final addition M2 of iso-butane, and complete iso-butane
Addition after, close the first control valve 4；
4) the second control valve 5 is then opened, butene feed controls its inlet amount, and passes through the first mass flowmenter 7 and write down
The final addition M3 of butylene, closes the second control valve 5, check valve 6 and mass flowmenter after charging, that is, completes reaction
The addition of raw material；
5) open gas mixture, open heater 10 and pass through temperature control modules set heating temperature and when
Between, input control valve 12 is opened after the completion of to be mixed, mixed gas is delivered in fixed bed 14；
6) it waits after the completion of reacting, opens output control valve 17, open simultaneously nitrogen sweep blowing apparatus, constantly to purge fixed bed
14 so that the oil gas for reacting generation smoothly enters in product liquid bottle 18, by cooling down in bottle 19, cooling agent cooling, with this
Obtain being passed through the mass M 12 of nitrogen by the detection of the second mass flowmenter 15 simultaneously；
7) unreacted butylene and isobutane gas are passed through from product liquid bottle 18 in gas bottle 21, then from gas bottle 21
Outlet enter in gas chromatograph 1, due to nitrogen be inert gas, can not show on gas chromatograph 1, therefore, pass through
The separation analysis of gas chromatograph 1 respectively obtain the content volume of unreacted isobutane gas and butene gas than value be
N, and the mixed gas of iso-butane not soluble in water, butylene and nitrogen in inlet liquid bottle 23, passes through electronics out of gas bottle 21
The weighing of scale 22 obtains gross mass as M3,
8) by mass difference method, gross mass=M3-M11-M12- amount liquid of unreacted isobutane gas and butene gas
23 initial mass Ms of bottle, then obtain the volume ratio of the two content by gas chromatograph 1, i.e., unreacted are calculated respectively
Isobutane gas and unreacted butene gas, that is, complete experiment.
It these are only the embodiment for illustrating the utility model, be not intended to limit the utility model, for this field
For technical staff, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of experimental provision for preparing isooctane, it is characterised in that：Including iso-butane gas cylinder (2), butylene gas cylinder (3), conveying
Manage (25), mass flowmenter, fixed bed (14), product liquid bottle (18), gas bottle (21) and amount liquid bottle (23), the iso-butane
The beginning of delivery pipe (25), the gas outlet of the butylene gas cylinder (3) are accessed in the gas outlet of gas cylinder (2) after the first control valve (4)
Access the beginning of delivery pipe (25) after the second control valve (5), the end of the delivery pipe (25) is successively through check valve (6), the
One mass flowmenter (7), gas mixer (11) and input control valve (12) access the entrance of fixed bed (14), the fixation afterwards
The outlet of bed (14) is accessed after output control valve (17) in product liquid bottle (18), the gas bottle (21) and product liquid bottle
(18) it is attached by conduit and is connected with a gas chromatograph (1) in the gas outlet of gas bottle (21), pacified on the conduit
It is inserted into product liquid bottle (18) equipped with one end of the 4th control valve (20) and conduit, in its other end insertion gas bottle (21),
The amount liquid bottle (23) is connect by connecting tube (24) with gas bottle (21), and gas bottle is inserted into one end of the connecting tube (24)
(21) bottom, its other end are inserted into inside and are loaded in the amount liquid bottle (23) of aqueous solution, are equipped in the bottom of amount liquid bottle (23)
Electronic scale (22) is equipped with a cooling device on product liquid bottle (18).
2. the experimental provision according to claim 1 for preparing isooctane, it is characterised in that：Nitrogen sweep blowing apparatus is further included,
The nitrogen sweep blowing apparatus includes nitrogen cylinder (8), and the gas outlet of the nitrogen cylinder (8) is successively through third control valve (9) and second
In delivery pipe (25) where being connected to after mass flowmenter (15) between gas mixer (11) and input control valve (12).
3. the experimental provision according to claim 2 for preparing isooctane, it is characterised in that：The two of gas mixer (11)
Having heaters (10) is installed in side, and a temperature control modules are connected on the heater (10).
4. the experimental provision according to claim 2 for preparing isooctane, it is characterised in that：The bottom of the fixed bed (14)
It is equipped with for heat-insulated silica wool (16), and a pressure gauge (13) is installed in fixed bed (14).
5. the experimental provision according to claim 2 for preparing isooctane, it is characterised in that：The cooling device includes inside
The cooling bottle (19) of cooling agent is loaded with, the bore of the cooling bottle (19) is more than the bore of product liquid bottle (18), and described
Product liquid bottle (18) is mounted on the inside of cooling bottle (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721655338.6U CN207571085U (en) | 2017-12-01 | 2017-12-01 | A kind of experimental provision for preparing isooctane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721655338.6U CN207571085U (en) | 2017-12-01 | 2017-12-01 | A kind of experimental provision for preparing isooctane |
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| Publication Number | Publication Date |
|---|---|
| CN207571085U true CN207571085U (en) | 2018-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721655338.6U Expired - Fee Related CN207571085U (en) | 2017-12-01 | 2017-12-01 | A kind of experimental provision for preparing isooctane |
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| CN (1) | CN207571085U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831235A (en) * | 2017-12-01 | 2018-03-23 | 钦州学院 | A kind of experimental provision for preparing isooctane |
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2017
- 2017-12-01 CN CN201721655338.6U patent/CN207571085U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831235A (en) * | 2017-12-01 | 2018-03-23 | 钦州学院 | A kind of experimental provision for preparing isooctane |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180703 Termination date: 20191201 |