CN205032059U - Hydrogen chloride and methane chlorination thing separator - Google Patents
Hydrogen chloride and methane chlorination thing separator Download PDFInfo
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- CN205032059U CN205032059U CN201520797504.0U CN201520797504U CN205032059U CN 205032059 U CN205032059 U CN 205032059U CN 201520797504 U CN201520797504 U CN 201520797504U CN 205032059 U CN205032059 U CN 205032059U
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Abstract
The utility model relates to a hydrogen chloride and methane chlorination thing separator, this device are pressure swing adsorption unit, contain adsorption tower, voltage -sharing jar, stripping gas buffer tank, sequencing valve, automatic control system, each constitutional unit among the the device with endless form experience in proper order that absorption, voltage -sharing are fallen, are reversely put the pressure, are managed to find time, voltage -sharing liter, the final step of stepping up. Use the utility model discloses, at reverse press and manage to find time step desorption recovery methane chlorination thing and the hydrogen chloride put, the rate of recovery can reach 99%, adsorbing the step, the adsorbent adsorbs the methane chlorination thing, obtains net hydrogen chloride purified gas product, can obtain concentration 90 -99.99%'s hydrogen chloride as required. The utility model discloses simple process, degree of automation height, small investment, running cost hang down, safety ring protects energy -conservation, can wide application in methane chlorination thing production trade.
Description
Technical field
The utility model belongs to chemical gases treatment facility technical field, is specially a kind of hydrogen chloride and methane chloride separator.
Background technology
Methane chloride comprises monochloro methane, carrene, chloroform and tetrachloromethane, be called for short CMS, since the thirties in 20th century suitability for industrialized production, having become in organic chlorides the large chlorine system product being only second to vinyl chloride, is important industrial chemicals and organic solvent.CMS is of many uses, has very important effect in the national economic development.
Most domestic producer adopts methyl alcohol hydrochlorinate method to produce pure chloromethanes, and the chloromethanes of generation continues to produce carrene, chloroform and tetrachloromethane with chlorine reaction.Inevitably a large amount of byproduct hydrogen chlorides is produced in the production process of chloromethanes and methane chloride thereof.And these HCl gases are due to containing impurity such as raw material, side reaction product or products more or less, its utilization is restricted.Therefore, effectively refine and utilize these byproducts HCl gas to be not only related to the economic benefit of enterprise, being also related to the protection problem of environment.
At present for by-product hydrogen chloride, the method for water absorption by-product hydrochloric acid is generally adopted to reclaim hydrogen chloride; The solution of what this method obtained is HCl, to obtain HCl gas, then needs to resolve hydrochloric acid with the hydrogen chloride in separated salt acid solution, thus cause technological process long, take up an area large, investment is large, operating cost is high, pollute the problem such as heavily.
Patent document " method of purification of methane chloride byproduct hydrogen chloride " (201010281731.X) describes and utilizes Temp .-change adsorptive process to methane chloride byproduct hydrogen chloride of purifying.The adsorbent reactivation process of the method is: temperature controlled at 300-500 DEG C, Stress control passes into smart De contamination tower bottom at the heated nitrogen of 0.23-0.45MPa, pass into pre-adsorption tower top again from smart De contamination top of tower nitrogen out, bottom pre-adsorption tower, nitrogen out sends battery limit (BL) after exhaust gas cooler cooling.This process recovers method temperature is high, requires higher to equipment, valve and other auxiliary facility material; During plant running, the absorption and regeneration temperature difference is large, and equipment and adsorbent Yin Wendu cold and heat succeed each other, expanding with heat and contract with cold causes the life-span greatly to shorten; Regeneration heating-up temperature is very high, causes energy consumption huge.
Patent document " from producing the method and system reclaiming hydrogen chloride chloromethanes or tetrachloro-ethylene tail gas " (201410066874.7) describes and utilizes distinctive solvent to carry out being separated of high selectivity to methane chloride with the hydrogen chloride in tetrachloro-ethylene tail gas, but in this system, solvent needs to carry out separation and recovery step and just can reuse after contacting with tail gas, adds operating cost; In this system solvent absorption tail gas, after other materials, remaining hydrogen chloride also needs the hydrogen chloride that just can obtain higher degree through deep cooling and demist, further increases the energy consumption in running; This system solvent also can residual fraction hydrogen chloride after using, thus reduce the yield of hydrogen chloride product.
Technology disclosed in above two patents with in technique compared with the technology of the water absorption by-product hydrochloric acid of routine, improving product hydrogen quality, reduce operating cost, extension device and device service life, reduce the outstanding and substantial improvement in the aspects such as equipment material requirement.
Summary of the invention
Goal of the invention of the present utility model is for above technical problem, there is provided the methane chloride that a kind of technique is simple, operating cost is low, automaticity is high, hydrogen chloride product purity is high, the methane chloride rate of recovery is high to produce exhaust gas processing device, be specially adapted to the hydrogen chloride containing methane chloride and methane chloride separator.
Concrete technical scheme of the present utility model is:
Hydrogen chloride and methane chloride separator, this device comprises adsorption tower, stripping gas surge tank, equalizer tank, sequencing valve, vavuum pump, adsorption tower raw material gas inlet and adsorption tower clean gas outlet, every root pipeline all arranges sequencing valve, unstripped gas is connected with adsorption tower with sequencing valve by raw material gas inlet, pipeline, adsorption tower is connected with purified gas device by adsorption tower clean gas outlet, adsorption tower is all connected with vavuum pump with stripping gas surge tank, and equalizer tank is all connected with adsorption tower with stripping gas surge tank.This device inverse put gas and exhaust can first be transported to stripping gas surge tank.
Described adsorption tower comprises adsorption tower raw material gas inlet, adsorption tower clean gas outlet, all to calm the anger outlet, exhaust outlet and inverse bleeder holes; Described outlet of all calming the anger is connected with equalizer tank by pipeline, and exhaust outlet is connected with vavuum pump by pipeline, and inverse bleeder holes is connected with stripping gas surge tank by pipeline.
Described adsorption tower is 3-10 platform, and the number of preferred adsorption tower is 4, connects side by side between each adsorption tower.Described adsorption tower all arranges sequencing valve, and sequencing valve is connected with control device.At the compound adsorbent filler of described adsorption tower built with any one or a few in active carbon, silica gel, aluminium oxide, molecular sieve.
Unstripped gas containing hydrogen chloride and methane chloride enters hydrogen chloride and methane chloride separator under 0.1-1.0MPa pressure, automatically the adsorption tower regenerated is entered into by pre-set program control system, be separated through the adsorbent be seated in adsorption tower, the impurity such as chloromethanes are rested in tower by adsorbent, and pure hydrogen chloride product exports from tower top.After an absorption tower adsorbs terminates, a residual gas part in tower is put into equalizer tank from tower top, then another part puts into stripping gas surge tank at the bottom of tower, finally adopts the mode of finding time to be desorbed by the absorption methane chloride remained in adsorbent, realizes the regeneration of adsorbent.After an adsorption tower regeneration ending, utilize Partial cleansing gas to boost to adsorptive pressure to it, prepare to enter adsorption process next time.Whole process, by least 2 adsorption tower periodic duties, the time evenly staggers, and whole handoff procedure is controlled automatically by the programming system pre-set, the operation that assurance device is continuous, stable, safe.
This device the tail gas from methane chloride device is passed into be filled with adsorbent adsorption tower bottom, adsorbent removes the impurity such as methane chloride and nitrogen, hydrogen chloride gas after imurity-removal from adsorption tower top out, obtain the pure hydrogen chloride gas of 90%-99.99%, reclaimed by inverse put and mode desorb of finding time by adsorbent impurity, wherein the rate of recovery of methane chloride reaches more than 99%.
The impurity contained in tail gas from methane chloride device comprises one or more gases in monochloro methane, carrene, chloroform, carbon tetrachloride.
Product hydrogen chloride pipeline described in a device, namely adsorption tower clean gas outlet is provided with the pressure that control valve carrys out stabilising arrangement.This device inverse put gas and exhaust can first be transported to stripping gas surge tank, export the stripping gas pipeline be connected be provided with control valve with described stripping gas surge tank.Find time rinsing step purge gas come to refluxing portion purified gas.
Good effect of the present utility model is embodied in:
(1) the adsorbent recycling rate of waterused, in this device is high, long service life, uses comparatively low energy consumption just can regenerate thorough.
(2), this device directly can obtain the hydrogen chloride product that purity is 90%-99.99% according to demand, without the need to further deep cooling, demist, greatly reduces operation energy consumption.
(3) stripping gas, in the utility model can return a workshop section, makes the recovery utilization rate of its methane chloride up to more than 99%, improves economic benefit and the social benefit of factory.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Wherein, 1---adsorption tower; 2---stripping gas surge tank; 3---equalizer tank; 4---sequencing valve; 5---vavuum pump; 6---adsorption tower raw material gas inlet; 7---adsorption tower clean gas outlet.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described, but do not limit the scope of the invention.
Embodiment 1:
As shown in Figure 1, hydrogen chloride and methane chloride separator, the program-controlled valve comprising adsorption tower, stripping gas surge tank, equalizer tank, vavuum pump, pipeline and be arranged on each bar pipeline, described unstripped gas is connected with adsorption tower with pipeline by adsorption tower raw material gas inlet, adsorption tower is connected with purified gas device by adsorption tower clean gas outlet, adsorption tower is all connected with vavuum pump with stripping gas surge tank, and equalizer tank is all connected with adsorption tower with stripping gas surge tank.
Described adsorption tower comprises adsorption tower raw material gas inlet, adsorption tower clean gas outlet, all to calm the anger outlet, exhaust outlet and inverse bleeder holes; Described outlet of all calming the anger is connected with equalizer tank by pipeline, and exhaust outlet is connected with vavuum pump by pipeline, and inverse bleeder holes is connected with stripping gas surge tank by pipeline.
Described adsorption tower all arranges sequencing valve, and sequencing valve is connected with control device.Described adsorption tower is 4, connects side by side between each adsorption tower.At described adsorption tower built with at least one adsorbent filler in active carbon, silica gel, aluminium oxide, molecular sieve.
It is 0.5MPa that methane chloride produces tail gas pressure, and tolerance is about 2000Nm
3/ h, it is as shown in the table that methane chloride produces exhaust gas composition:
Table 1 methane chloride produces tail gas composition (V%)
| Composition | Monochloro methane | Carrene | Chloroform | Tetrachloromethane | Nitrogen | Hydrogen chloride | ∑ |
| Ｖ％ | 3.16 | 0.26 | 0.08 | 0.04 | 8.70 | 87.76 | 100 |
When pressure-swing absorption apparatus runs, unstripped gas enters into those adsorption towers regenerated automatically by pre-set program control system, is separated through the adsorbent be seated in adsorption tower.After an absorption tower adsorbs terminates, a residual gas part in tower is put into equalizer tank from tower top, then another part puts into stripping gas separator tube at the bottom of tower, finally adopts the mode of finding time to rinse to be desorbed by the absorption methane chloride remained in adsorbent, realizes the regeneration of adsorbent.After an adsorption tower regeneration ending, utilize Partial cleansing gas to boost to adsorptive pressure to it, prepare to enter adsorption process next time.Whole process, by least 2 adsorption tower periodic duties, the time evenly staggers, and whole handoff procedure is controlled automatically by the programming system pre-set, the operation that assurance device is continuous, stable, safe.The cycling element process of each tower is: A(adsorbs) the equal pressure drop of-ED()-D(inverse put)-V(finds time) the equal voltage rise of-ER()-FR(final rise).
After the device process described in the utility model, methane chloride produces the methane chloride rate of recovery in tail gas can reach 99%, and product hydrogen chloride purity reaches 99.9%.
Embodiment, just to clearly demonstrating example of the present invention, is not the restriction to embodiment.For the those of ordinary skill belonging to basis, can also make multi-form change or change on the basis of the above description, the apparent change of extending out thus or variation are all within protection domain of the present utility model.
Claims (6)
1. a hydrogen chloride and methane chloride separator, this device comprises adsorption tower (1), stripping gas surge tank (2), equalizer tank (3), sequencing valve (4), vavuum pump (5), adsorption tower raw material gas inlet (6) and adsorption tower clean gas outlet (7), it is characterized in that: unstripped gas is by adsorption tower raw material gas inlet (6), pipeline is connected with adsorption tower (1) with sequencing valve (4), adsorption tower is connected with purified gas device by adsorption tower clean gas outlet (7), adsorption tower (1) is all connected with vavuum pump (5) with stripping gas surge tank (2), equalizer tank (3) is all connected with adsorption tower (1) with stripping gas surge tank (2).
2. hydrogen chloride according to claim 1 and methane chloride separator, is characterized in that: described adsorption tower (1) comprises adsorption tower raw material gas inlet (6), adsorption tower clean gas outlet (7), all to calm the anger outlet, exhaust outlet and inverse bleeder holes; Described outlet of all calming the anger is connected with equalizer tank (3) by pipeline, and exhaust outlet is connected with vavuum pump (5) by pipeline, and inverse bleeder holes is connected with stripping gas surge tank (2) by pipeline.
3. hydrogen chloride according to claim 1 and methane chloride separator, is characterized in that: described adsorption tower (1) all arranges sequencing valve (4), and sequencing valve (4) is connected with control device.
4. hydrogen chloride according to claim 1 and methane chloride separator, is characterized in that: described adsorption tower (1) is 3-10 platform, connects side by side between each adsorption tower.
5. hydrogen chloride according to claim 1 and methane chloride separator, is characterized in that: be provided with control valve exporting on the stripping gas pipeline that is connected with described stripping gas surge tank (2).
6. hydrogen chloride according to claim 1 and methane chloride separator, is characterized in that: be provided with control valve at described adsorption tower clean gas outlet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520797504.0U CN205032059U (en) | 2015-10-16 | 2015-10-16 | Hydrogen chloride and methane chlorination thing separator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520797504.0U CN205032059U (en) | 2015-10-16 | 2015-10-16 | Hydrogen chloride and methane chlorination thing separator |
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| CN205032059U true CN205032059U (en) | 2016-02-17 |
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