CN203170298U - Device for preparing volatile gas of solid - Google Patents
Device for preparing volatile gas of solid Download PDFInfo
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- CN203170298U CN203170298U CN2013201823702U CN201320182370U CN203170298U CN 203170298 U CN203170298 U CN 203170298U CN 2013201823702 U CN2013201823702 U CN 2013201823702U CN 201320182370 U CN201320182370 U CN 201320182370U CN 203170298 U CN203170298 U CN 203170298U
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Abstract
The utility model provides a device for preparing a volatile gas of a solid. The device comprises a volatilization chamber which is used for placing a solid to be volatilized and a heating device which is used for heating the volatilization chamber to volatilize the solid to be volatilized, wherein the volatilization chamber is provided with a gas inlet for inputting a carrier gas and a gas outlet for outputting a target gas, and a target gas collecting tank is connected to the gas outlet; volatile gases which are generated by the carrier gas and the solid to be volatilized are mixed in the volatilization chamber to obtain the target gas; and a blocking device for preventing the solid to be volatilized from being filtered is arranged at each of the gas inlet and the gas outlet. The device for preparing the volatile gas of the solid is simple and feasible, and is widely applicable to preparation of volatile gases of solids.
Description
Technical field
The utility model belongs to the chemical gas preparation field, is specifically related to a kind of device for preparing the volatilization gas of solid.
Background technology
Volatile solid (be called for short VS) refers to that part of solid that can volatilize in the total solid under 550 ℃ of high temperature, the residue that can not volatilize is called ash content.Numerous experiments show that solid organic matters all has volatility, so by detecting the content of VS, just can know organic general proportions in the raw material.At present, the gas that volatilization produces for volatile solid, existing numerous modes can realize content detection.The long-range Science and Technology Ltd. in Chinese and Western, Beijing model is that the solid type VOC of YA1-SG-20098 detects speed changer, can detect at the isobutene of 0.01-1000ppm or the organic gas of equal parts concentration.This type of checkout gear generally all is to draw the gas that volatilizes by built-in asepwirator pump, and gas componant and concentration are detected realization.
Yet above-mentioned detection device only realized content and the character of gas that solid is volatilized and detected, but need prepare the volatilization gas of solid when some is specific when the time, also do not have the device that suits.
At present, preparation or concentration adjustment to gas are all mixed realization by carrier gas with object gas, for example Chinese patent literature CN101584898A discloses a kind of method of regulating concentration of oxygen output by respirator, namely utilize a valve that comprises nozzle of air supply, air intlet and gas outlet, to nozzle of air supply input high pressure oxygen, forming negative pressure in the valve is sucked air by air intlet, mix with oxygen, and by the control device of regulating air inflow is set at the air intlet place, finally obtain oxygen and the Air mixing gas of certain concentration.But for the solid volatilization gas, because the volatilization of solid is subjected to the restriction of temperature, the gas that volatilizes simultaneously also is that trace calculates, cause the difficult control of active intake method of solid volatilization gas, if as adopting the principle of negative pressure air inlet in the prior art, very easily cause the suction of solid particle.Therefore, adopting the mode of regulation and control gas concentration in the prior art is the preparation that is difficult to realize the solid volatilization gas.In the face of the demand, demand developing a kind of method that can prepare the solid volatilization gas urgently and especially install.
The utility model content
For this reason, technical problem to be solved in the utility model is not to be applicable in the prior art device problem of preparation solid volatilization gas, and then a kind of device of simple preparation solid volatilization gas is provided.
Further, the utility model also provides a kind of method of utilizing said apparatus to prepare the solid volatilization gas.
Solid to be volatilized described in the utility model can be the very low solid matters of saturated vapor pressure such as trinitrotoluene (TNT), red phosphorus, it also can be general volatile solid material, so long as all can adapt to by being heated to the solid that suitable temperature can volatilize gas, the solid that dissolving sees through phenomenon more preferably can take place with the tetrafluoroethene filter membrane at 10-200 ℃ solid in preferred heating and temperature control.
The device of the volatilization gas of the preparation solid that the utility model provides comprises the volatilization chamber of placing the solid of waiting to volatilize and the heater element that described volatilization chamber heating is made the described solid volatilization of waiting to volatilize; Described volatilization chamber is provided with the gas outlet for the air inlet of carrier gas input and object gas output, and place, described gas outlet is connected with the object gas collecting tank; The volatilization gas that described carrier gas and the described solid of waiting to volatilize produce mixes in that described evaporation chamber is indoor, obtains described object gas; Described air inlet and described gas outlet place is provided with the blocking device that prevents that the described solid of waiting to volatilize from filtering.
Wherein, the setting of described blocking device can avoid the carrier gas solid to be volatilized that evaporation chamber is indoor to carry gas outlet in the target approach gas output secretly.The material of described blocking device and form is set can considers according to information summaries such as the character of the solid of waiting to volatilize, states can reach and stops the solid of waiting to volatilize to be carried secretly the effect of leaving the volatilization chamber by gas outlet or air inlet by carrier gas to get final product.
Preferably, described blocking device is for being the filter membrane that is arranged at described air inlet and described gas outlet place respectively.Further preferably, described filter membrane can be organic film or inoranic membrane; Wherein, described organic film is preferably a kind of in teflon membrane filter, SC, PE film, the polyimide film; Described inoranic membrane is preferably a kind of in metal film, the ceramic membrane.Wherein with the best performance of teflon membrane filter.
Described evaporation chamber is indoor to be provided with the porous carrier that coats the described solid of waiting to volatilize.Preferred solid described to be volatilized is graininess in the utility model, and described porous carrier coats solid described to be volatilized, and the described solid of waiting to volatilize is better disperseed.Further, described porous carrier is one or more in glass fibre cotton, absorbent cotton or the sponge.Described heater element is socketed on the outer wall of described volatilization chamber.
Further preferably, described heater element is made up of some heating components that are can be mutually chimeric and that form the space that holds described volatilization chamber.
Described heating component comprises described the volatilize heating rod of solid heating and the bottoming hole that holds described heating rod waited.The number of bottoming hole setting, position can adjust according to actual conditions.Preferred described bottoming hole is circumferentially evenly distributed along described heating component, and described bottoming hole is preferably 4-6 of symmetric design.
Described heating component is provided with the thermometer hole that holds temperature sensor, and preferred described thermometer hole and described bottoming hole arrange at interval.
Described air inlet place is provided with inlet channel, is provided with outlet passageway between described gas outlet and the described object gas collecting tank, and described inlet channel and described outlet passageway are respectively with described air inlet with described gas outlet is dismountable is tightly connected.
Further, described volatilization chamber is the slightly thick dumbbell shaped structures in middle slightly thin both sides, described air inlet and described gas outlet are arranged at the slightly thick dumbbell end place, both sides of described volatilization chamber respectively, described inlet channel and described outlet passageway sealing shroud respectively are connected to the described dumbbell end outer wall place of described volatilization chamber, realize the sealing socket with described air inlet and gas outlet.
Further, described inlet channel and described outlet passageway are respectively by the inclined-plane sealing that matches with the outer wall of the both sides dumbbell end of described volatilization chamber.
Described air inlet place is provided with the flow control valve of the described carrier gas air inflow of control.
Further, the utility model also provides a kind of method of utilizing described device to prepare the volatilization gas of solid, comprise the steps: that specifically (1) is coated on solid to be volatilized in the porous carrier, and place evaporation chamber indoor, by heater element described volatilization chamber is heated, make the described solid volatilization of waiting to volatilize obtain volatilization gas; (2) by air inlet to the indoor input carrier gas of described evaporation chamber, make described carrier gas and described volatilization gas mix in that described evaporation chamber is indoor, obtain object gas, and enter collecting tank from gas outlet output; (3) detect or calculate the concentration of described object gas.
If need the volatilization gas of a certain certain concentration of preparation, can be by to the mensuration of gained or calculate that the input gas identical with the carrier gas of preparation process feeding dilutes it in the volatilization gas of solid of concentration, or concentration as required carries out suitable processing, to obtain the volatilization gas of some required certain concentration.
In addition, also can be before the volatilization gas of the described solid of preparation, use this device to feed the concentration of the gas of resulting volatilization solid under the flow in specified temp and specific device structure and specific carrier gas by match experimental study repeatedly, and then the experimental concentration that simulates the volatilization gas of particular solid concern with the substantial linear that heating-up temperature and carrier gas feed between the flow.When needs prepare the gas of a certain certain concentration, the Curve selection of property match roughly suitable carriers input flow rate and heating-up temperature and heat time heating time rule of thumb, obtain the gas concentration value the most approaching with needed certain concentration, can guarantee to prepare the volatilization gas of desired concn in follow-up concentration difference minimum the when gas that obtains is carried out the concentration quantitative work.
In the utility model, described carrier gas can for example be air or N according to the demand of specific volatilization gas and the character of volatilization gas are reasonably selected
2Deng inert gas.
The device of the volatilization gas of preparation solid described in the utility model has the following advantages:
(1) device of the volatilization gas of preparation solid described in the utility model, solid directly is arranged at the indoor mode of evaporation chamber by waiting to volatilize, make solid volatilization with and mixing all of carrier gas in described volatilization chamber, directly carry out, not only simple and solved the problem that needs two kinds of gases inputs of control simultaneously; At the indoor blocking device that prevents that described solid from leaching that is provided with of described evaporation chamber, guarantee that the described solid of waiting to volatilize can not leach described volatilization chamber with carrier, guarantees that not only the purity of object gas has also guaranteed calculating object gas concentration accuracy simultaneously;
(2) device of the volatilization gas of preparation solid described in the utility model, preferred described blocking device is for being arranged at the filter membrane of described air inlet and gas outlet respectively, and according to waiting the volatilize character of solid and the filter membrane that initial input particle grain size is selected suitable aperture, simple in structure effective;
(3) described filter membrane polytetrafluoroethylene (PTFE) more preferably, utilize the politef stable in properties, high temperature resistant, antiacid alkali resistant, anti-various organic solvents, be dissolved in the excellent properties of all solvents hardly, can the volatilization gas of the solid that makes not polluted, while, the described solid of waiting to volatilize was applicable to that preferably its gas molecule can the solid that dissolving sees through phenomenon take place with described tetrafluoroethene filter membrane, utilized and dissolved the character that sees through, and further guaranteed the purity of gas;
(4) device of the volatilization gas of preparation solid described in the utility model, described evaporation chamber is indoor to be provided with the porous carrier that coats the described solid of waiting to volatilize, make described device go for the preparation of the gas of the less solid of particle, on the one hand porous carrier can make the solid of waiting to volatilize more uniform to be distributed in described evaporation chamber indoor, simultaneously the maximized speed that guarantees gaseous volatilization;
(5) device of the volatilization gas of preparation solid described in the utility model, described heater element preferably is socketed on described evaporation chamber chamber outer wall, and further preferably being set to can mutual chimeric formation hold the heating component of described volatilization cavity space, can be mutually chimeric mode can be convenient to described heating component in installation, the dismounting of described evaporation chamber outdoor;
(6) device of the volatilization gas of preparation solid described in the utility model, described heater element adopts the mode at described heating component insertion heating rod to heat, can avoid heater block exposed with air in the bigger heat of loss, and heat is equably to the transmission of described volatilization chamber after can making described heating component heating, preferred described bottoming hole circumferentially is symmetrical arranged along described volatilization chamber, guarantees the uniformity that heats;
(7) device of the present utility model, the device of the volatilization gas of the preparation solid that provides by the utility model obtains object gas, and the air inflow of the of poor quality and described carrier gas by measuring the solid of waiting described in the described volatilization chamber to volatilize is calculated the concentration of described object gas.When need prepare the volatilization gas of certain concentration, can the gas that obtain be compressed or dilution by those skilled in the art's conventional means, obtain the volatilization gas of certain concentration.Said method is realized the preparation of the solid volatilization gas of certain concentration through comparatively shirtsleeve operation process.
Description of drawings
Content of the present utility model is easier clearly to be understood in order to make, and according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the cutaway view of device of the volatilization gas of the preparation solid that provides of the utility model;
Fig. 2 is the side view of device of the volatilization gas of the preparation solid that provides of the utility model;
Fig. 3 is the volatilization chamber cutaway view of the volatilization gas device of the preparation solid that provides of the utility model;
Reference numeral is expressed as among the figure: the 1-chamber that volatilizees; The 11-air inlet; The 12-gas outlet; The 13-inlet channel; The 14-outlet passageway; The 15-filter membrane; The 16-inclined-plane; The 17-seal washer; The 2-heater element; The 21-heating component; The 211-bottoming hole; The 212-thermometer hole.
The specific embodiment
Below with reference to accompanying drawing, use following examples that the utility model is further set forth.
Be illustrated in figure 1 as the device of the volatilization gas of preparation solid of the present utility model, comprise the volatilization chamber 1 of placing the solid of waiting to volatilize and the heater element 2 that described volatilization chamber 1 heating is made the described solid volatilization of waiting to volatilize; Described volatilization chamber 1 is provided with the gas outlet 12 for the air inlet 11 of carrier gas input and object gas output; Described carrier gas mixes in described volatilization chamber 1 with the volatilization gas that the described solid of waiting to volatilize produces, and obtains described object gas; Described air inlet 11 and 12 places, described gas outlet are provided with the blocking device 15 that prevents that the described solid of waiting to volatilize from filtering.
Wherein, the design of described blocking device 15 is not unique, can be to stop the described solid of waiting to volatilize to be carried, left by described gas outlet or described air inlet secretly the structure of described volatilization chamber by carrier gas arbitrarily, a kind of preferred implementation is provided in the present embodiment, described block piece is for being arranged at the filter membrane at described air inlet 11 and 12 places, described gas outlet respectively, and the selection of the material of described filter membrane is not unique yet, and in the present embodiment, described filter membrane 15 is teflon membrane filter.
More uniform to be distributed in described evaporation chamber indoor in order to make the solid of waiting to volatilize, and is provided with the porous carrier that coats the described solid of waiting to volatilize in the described volatilization chamber 1.The selection of material of described porous carrier is not unique, and for realizing the purpose of this utility model, described porous carrier can be the bulk material that can disperse the described solid of waiting to volatilize arbitrarily, includes but not limited to glass fibre cotton, absorbent cotton or sponge.In the present embodiment, select glass fibre cotton for use.The set-up mode of described heater element 2 is not unique, as long as can realize treating the mode of volatilization solid heating, in the present embodiment, provides a kind of concrete implementation, and as shown in Figure 2, described heater element 2 is set to be socketed on the outer wall of described volatilization chamber 1.For the ease of installation, the dismounting of described heater element 2 in described volatilization chamber 1 outside, described heater element 2 is made up of some heating components 21 that are can be mutually chimeric and that form the space that holds described volatilization chamber 1.
For reducing thermal loss and make being heated of described volatilization chamber 1 more even, described heating component 21 comprises described the volatilize heating rod of solid heating and the bottoming hole 211 that holds described heating rod waited.To described heating component 21 heating, pass to described volatilization chamber 1 by the heating rod in the described bottoming hole 211 more thus.Certainly, the number of described bottoming hole, position are not unique, and in this example, the number of bottoming hole is 4, for make heater element 2 treat the volatilization solid heating more even, each described bottoming hole is along the circumferential symmetrical distribution of described volatilization chamber.
For detecting the temperature in the described volatilization chamber 1, described heating component 21 is provided with the thermometer hole 212 that holds temperature sensor.
Need to prove, for realizing the purpose of this utility model, design and the position of the shape of described volatilization chamber and described air inlet 11 and described gas outlet 12 are not unique, hold described wait the to volatilize space of solid volatilization and the passage of carrier gas input and gas output as long as have.In the present embodiment, a kind of concrete implementation is provided, as shown in Figure 3, described volatilization chamber 1 is the thick dumbbell shaped structures in middle thin both sides, described air inlet 11 and described gas outlet 12 be the corresponding dumbbell end that is arranged at described dumbbell shaped cavity respectively, described air inlet 11 places are provided with inlet channel 13, and 12 places, described gas outlet are provided with outlet passageway 14, described inlet channel 13 and described outlet passageway 14 respectively with described air inlet 11 and described gas outlet 12 dismountable being tightly connected.Certainly, above-mentioned dismountable implementation that is tightly connected is not unique yet, a kind of preferred design is provided in the present embodiment, and described inlet channel 13 and described outlet passageway 14 are respectively by inclined-plane 16 sealing that matches with the outer wall of the both sides dumbbell end of described volatilization chamber 1.It is the truncated cones shape of end face that described air inlet 11 and 12 places, described gas outlet are made as with the cross section of gas port; Described inlet channel 13 and described outlet passageway 14 are fitted with inwall and the described truncated cones shape of the connection inclined 16 of described air inlet 11 and described gas outlet 12 respectively, and are provided with and are suitable for screwing matching thread with described air inlet 11,12 places, described gas outlet.The conical surface screws cooperation can make two parts reach the better seal effect.
Be further to strengthen the sealing effectiveness of described air inlet 11 and described inlet channel 13 junctions, described gas outlet 12 and described outlet passageway 14 junctions, between described air inlet 11 and the described inlet channel 13, also be provided with seal washer 17 between described gas outlet 12 and the described gas outlet 14.
During use, described volatilization chamber 1 is horizontal, guarantees the uniformity of heating on the one hand, simultaneously, has also avoided the described solid of waiting to volatilize to tilt to cause particle to stop up the situation of filter membrane, guarantees that the volatilization step carries out smoothly.
For quantitatively control is by the flow rate of carrier gas of air inlet input, described air inlet 11 places are provided with the flow control valve of the described carrier gas air inflow of control.
Utilize described device to prepare the method for the volatilization gas of solid, specifically may further comprise the steps:
(1) the solid trinitrotoluene that volatilizees waited with 0.2g is coated in the glass fibre cotton, place in the described volatilization chamber 1 with tweezers, and described filter membrane 15 installed be arranged at described air inlet 11 and the sealing of 12 places, described gas outlet, screw described inlet channel 13 and described outlet passageway 14 subsequently, make it respectively at two dumbbell end socket sealings of dumbbell shaped volatilization chamber 1, form airtight space, heat by 2 pairs of described volatilization chambers 1 of heater element, the control temperature is at 80 ℃, make the described solid trinitrotoluene of waiting to volatilize volatilize gas, fill in described evaporation chamber indoor;
(2) pass through air inlet 11 to described volatilization chamber 1 interior input air, make air mix in described volatilization chamber 1 with described volatilization gas, obtain certain density object gas trinitrotoluene and Air mixing gas, and with its 12 outputs from the gas outlet; By the flow control valve that described air inlet 11 places arrange, the flow of control input air is 1L/min;
(3) by measuring the relation of calculating the volume of the of poor quality and input air of trinitrotoluene in the described volatilization chamber, obtaining under these conditions the trinitrotoluene volatilization is 6.3 μ g/min for the speed of gas, and the concentration that then obtains trinitrotoluene is 6.3 μ g/L.
Need obtain under the situation of trinitrotoluene gas of other certain concentration, can the same gas of carrier gas of trinitrotoluene gas use of 6.3 μ g/L of gained be diluted to certain volume by well known to a person skilled in the art technological means, obtain the trinitrotoluene gas of desired concn.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (12)
1. device for preparing the volatilization gas of solid is characterized in that: comprise placing and wait to volatilize the volatilization chamber (1) of solid and heating makes the described solid volatilization of waiting to volatilize to described volatilization chamber (1) heater element (2); Described volatilization chamber (1) is provided with the gas outlet (12) for the air inlet (11) of carrier gas input and object gas output, and described gas outlet (12) locate to be connected with the object gas collecting tank; Described carrier gas mixes in described volatilization chamber (1) with the volatilization gas that the described solid of waiting to volatilize produces, and obtains described object gas; Described volatilization chamber (1) is provided with the blocking device that prevents that the described solid of waiting to volatilize from filtering.
2. the device of the volatilization gas of preparation solid according to claim 1 is characterized in that: described blocking device is for being arranged at the filter membrane (15) that described air inlet (11) and described gas outlet (12) are located respectively.
3. the device of the volatilization gas of preparation solid according to claim 2 is characterized in that: a kind of in teflon membrane filter, SC, PE film, polyimide film, metal film or the ceramic membrane of described filter membrane (15).
4. according to the device of the volatilization gas of the arbitrary described preparation solid of claim 1-3, it is characterized in that: be provided with the porous carrier that coats the described solid of waiting to volatilize in the described volatilization chamber (1).
5. the device of the volatilization gas of preparation solid according to claim 4, it is characterized in that: described porous carrier is glass fibre cotton, absorbent cotton or sponge.
6. the device of the volatilization gas of preparation solid according to claim 1, it is characterized in that: described heater element (2) is socketed on the outer wall of described volatilization chamber (1).
7. the device of the volatilization gas of preparation solid according to claim 6 is characterized in that: described heater element (2) is made up of some heating components (21) that are can be mutually chimeric and that form the space that holds described volatilization chamber (1).
8. the device of the volatilization gas of preparation solid according to claim 7 is characterized in that: described heating component (21) comprises described the volatilize heating rod of solid heating and the bottoming hole (211) that holds described heating rod waited.
9. the device of the volatilization gas of preparation solid according to claim 1, it is characterized in that: described air inlet (11) locates to be provided with inlet channel (13), be provided with outlet passageway (14) between described gas outlet (12) and the described object gas collecting tank, described inlet channel (13) and described outlet passageway (14) respectively with dismountable being tightly connected of described air inlet (11) and described gas outlet (12).
10. the device of the volatilization gas of preparation solid according to claim 9, it is characterized in that: described volatilization chamber (1) is the thick dumbbell shaped structure in middle thin both sides, described air inlet (11) and described gas outlet (12) are arranged at the both sides dumbbell end of described volatilization chamber (1) respectively, and described inlet channel (13) and described outlet passageway (14) sealing shroud respectively are connected to the described dumbbell end outer wall place of described volatilization chamber (1).
11. the device of the volatilization gas of preparation solid according to claim 10 is characterized in that: each described bottoming hole (211) is along the circumferential symmetrical distribution of described volatilization chamber (1).
12. the device of the volatilization gas of preparation solid according to claim 11 is characterized in that: described inlet channel (13) and described outlet passageway (14) are respectively by inclined-plane (16) sealing that matches with the outer wall of the both sides dumbbell end of described volatilization chamber (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201823702U CN203170298U (en) | 2013-04-12 | 2013-04-12 | Device for preparing volatile gas of solid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013201823702U CN203170298U (en) | 2013-04-12 | 2013-04-12 | Device for preparing volatile gas of solid |
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| CN203170298U true CN203170298U (en) | 2013-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834310A (en) * | 2020-12-31 | 2021-05-25 | 山东天岳先进科技股份有限公司 | Pretreatment method and device for measuring nitrogen content in nitrogen-doped sample |
-
2013
- 2013-04-12 CN CN2013201823702U patent/CN203170298U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834310A (en) * | 2020-12-31 | 2021-05-25 | 山东天岳先进科技股份有限公司 | Pretreatment method and device for measuring nitrogen content in nitrogen-doped sample |
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