CN1792784A - Natural gas adsorpting super active carbon and its producing process and activation furnace - Google Patents
Natural gas adsorpting super active carbon and its producing process and activation furnace Download PDFInfo
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Abstract
A super-class activated carbon for adsorbing natural gas is prepared from coal powder, KOH as activator and coal tar through proportional mixing, sealing, filling overheat steam, and carbonizing-activating-becoming molecular sieve at 800-830 deg.C for 2-2.5 hr. Its activating furnace is also disclosed.
Description
Technical field
The present invention relates to the absorption activated carbon field, in particular, relate to Sweet natural gas absorption activated carbon and production method thereof, production unit and application.
Background technology
China's oil scarcity of resources, coal resources are abundant relatively.Developing novel coal chemical technology, building novel Coal Chemical Industry industry is the important channel that replenishes the China's oil inadequate resource, ensures energy security, to effectively extend traditional coal industrial chain, have the important strategic meaning guaranteeing Chinese energy safety and sustainable economic development.With high-quality low ash coal charcoal is that the raw material output can satisfy Sweet natural gas absorption and stores and become an important problem with novel super-activated carbon product.The production of traditional gac mainly comprises operations such as abrasive dust, kneading and compacting, oven dry, charing, activation, pickling and oven dry.At first, coal is worn into 100-200 purpose coal dust, add coal tar again and fully stir mediation coal-forming cream, send into shaper, make coal cream under high pressure by the mould of certain specification, complicated elasticity and plastic degeneration under high pressure take place in coal cream, are finally extruded into strips.Put into the charing of internal heat type coal gas rotary kiln after drying.The product of charing being put into Slapple activating furnace is the activator activation with water vapor and stack gas again.If produce carbon molecular sieve, also need carry out empty molecular sieveization of modifying and replenish activation etc. with molecular sieve function.Owing to contain ash content and molysite in the gac, need use chlorohydric acid pickling.Obtain the pH value after the pickling and be 5-6, moisture 50% product.Oven dry afterwards obtains finished product.The activator single that uses in the above-mentioned technology uses, and can not regenerate.Both caused serious environmental to pollute, the Activated Carbon Production cost is increased greatly.And charing need be finished in different equipment with activation, molecular sieveization, and number of devices is many, produces investment greatly, the reaction process complexity, and energy consumption is big, and pollution section is many, and capacity usage ratio is low simultaneously, poor working environment.Adopt the internally heated type rotary kiln to carry out charing, should be under the condition of secluding air, to heat destructive distillation, but in actual production, because in the charring furnace is negative pressure state, production system again can not be absolute tight, causes having the part air to bring the charing system into, and cause the burning of carbonized material in the stove, even extract material occluding device pipeline out, and be difficult to system's control, influence the quality of gac.And the gac specific surface area that produces is little, and the highest can only reaching about 1000/g is little to the adsorptive capacity of Sweet natural gas, can not adapt to actual needs.Especially in the application of energy source of car, only need with cheap single-stage compressor though Sweet natural gas has (1), investment is low with process cost; (2) bomb is from heavy and light, and the carrier vehicle load effectively reduces; (3) bomb shape choice is big, the space availability ratio height; (4) low pressure stores and progressively discharges, and the security that stores transportation is advantage such as increases obviously, but owing to the restriction of adsorptive power, can't popularize.
Summary of the invention
The present invention is for a kind of employing inorganic activation reaction technology is provided, charing, activation, molecular sieveization are finished in same reactor, production technique is simple, Sweet natural gas absorption super-activated carbon production method and activation furnace that energy consumption is little, and specific surface area is big, the Sweet natural gas of high adsorption capacity absorption super-activated carbon, and Sweet natural gas is adsorbed super-activated carbon is used for the automobile aspect, resolves more thorough, residual cushion steam is few, the automobile-used gas-holder that the unit adsorptive capacity is big.
The present invention is achieved through the following technical solutions:
A kind of Sweet natural gas absorption super-activated carbon is characterized in that, is that raw material mixes with coal dust, activator and coal tar, feeds superheated vapo(u)r under sealed state, obtains in a 800-830 ℃ of constant temperature 2-2.5 hour charing-activation-molecular sieveization; Wherein the weight percent of activator is 75-80%, and the weight percent of coal dust is 20-25%, and coal tar accounts for the 3-5% of coal dust and activator gross weight, and described activator is KOH; Constituting the super-activated carbon main structure body is the graphite-like crystallite, each graphite-like crystallite is to be made of 3～4 layers of thin layer that becomes with carbon atom arrangement, in each layer, carbon atom is arranged in regular hexagon regularly, form aromatic structure, and form netted two dimensional structure, between adjacent two layers by 20～30 such regular hexagons, the relative position of carbon atom forms turbostratic, its specific surface area 〉=2500m
2/ g, pore volume are 0.5-1.5g/ml, and bulk density is 0.25-0.4.
A kind of production method of Sweet natural gas absorption super-activated carbon is characterized in that, comprises the steps:
(1) abrasive dust: raw coal is pulverized, and the granularity of coal dust is the 180-200 order;
(2) kneading and compacting: coal dust is mixed with powdery KOH, and the granularity of KOH is 50 orders, and wherein the weight percent of KOH is 75-80%, and the weight percent of coal dust is 20-25%; Coal tar with the total amount 3-5% that adds materials in the said mixture material fully reconciles into paste with raw material stirring, and sending into the shaper press strip is that diameter 10mm length is the column form object of 80-100mm;
(3) charing-activation-molecular sieveization: the column form object of press strip is put into activation furnace and is sealed, and the temperature of activation furnace is heated to 800-830 ℃, the rotation of activation furnace body of heater at 800-830 ℃ of constant temperature 2-2.5 hour, is carried out charing-activation-molecular sieveization and is obtained gac in the process of heating; The omnidistance hyperthermia and superheating steam that feeds prevents the CO burning that produces in the heat-processed as secondary activation agent;
(4) pickling: above-mentioned gac is removed impurity with chlorohydric acid pickling, and acid solution and impurity are removed in washing afterwards, are cooled to filter below 60 ℃ obtain pH value at 6-7, moisture 50% gac again;
(5) oven dry: hot-air dry 2.0-2.5 hour of 70-75 ℃ of will be above-mentioned aqueous gac usefulness obtains active carbon finished products.
When feeding superheated vapo(u)r, 20%KOH solution is entered in the activation furnace with Sprayable with superheated vapo(u)r.
Filter the back and collect the filtrate of containing the KOH activator, purge regeneration, obtain the KOH solid or add part KOH again obtaining 20%KOH solution by superheated vapo(u)r.
A kind of activation furnace of producing gac; between the two ends of body of heater and bell, be connected with chain-drive mechanism; be provided with bell protective layer, temperature-measuring port and feed-pipe in the one end bell; be provided with bell protective layer, temperature-measuring port and discharge port in the other end bell; it is characterized in that described body of heater arranged outside has the heating zone, be provided with tail gas discharging pipe in the bell of described discharge port one side; described feed-pipe is connected with steam entry, and described steam entry is connected with KOH solution inlet.
A kind of automobile-used gas-holder, it is characterized in that, in tank body, be provided with the described Sweet natural gas absorption of claim 1 super-activated carbon, be embedded with energy-storage travelling wave tube in the described adsorption bed as adsorption bed, one end of described tank body is fixed with safety valve, is fixed with filter screen between adsorption bed and safety valve; The volume ratio of described energy-storage travelling wave tube and gac is 12.5: 87.5, and described energy-storage travelling wave tube comprises metal tube, is sealed with salt hydrate in the described metal tube; Described safety valve is provided with gas passage.
The present invention has following advantage:
1. Sweet natural gas absorption super-activated carbon production method of the present invention adopts KOH as activator, and activator can regenerate and reuse, and has avoided the pollution of activator to environment, has reduced production cost.
2. adopt the external heating type activation furnace, type of heating can be electrically heated or combustion gas heating, control easily.Charing, activation, molecular sieveization are carried out in same activation furnace, and the no drying operation has been simplified technical process greatly, and technology investment is low, energy consumption is little, pollute significantly reduction, and capacity usage ratio obviously improves.
3. big, the high adsorption capacity of the gac specific surface area of producing by control of process condition of the present invention.Be used for that the adsorption bed as automobile-used gas-holder can adsorb more Sweet natural gas on the automobile, increased the distance of running car.
4. the energy-storage travelling wave tube that automobile-used gas-holder of the present invention adopts guarantees that simultaneously inflation or deflation course are all near isothermal.Can increase by 25% storage capacity, energy-storage travelling wave tube itself occupies 12.5% bed volume, it also can relax the influence to adsorption bed gas storage capacity that temperature variation causes fully, gas-storing capacity in the time of can making fast aeration like this increases about 27%, resolve more thorough, residual cushion steam is few, and the unit adsorptive capacity is big, can obviously improve the efficient of automobile.
Description of drawings
Fig. 1 is the side-view of graphite microtexture;
Fig. 2 is the vertical view of Sweet natural gas absorption super-activated carbon microtexture of the present invention;
Fig. 3 is the stereographic map of Sweet natural gas absorption super-activated carbon microtexture of the present invention;
Fig. 4 is the schema of Sweet natural gas absorption super-activated carbon production method of the present invention;
Fig. 5 is the structural representation of activation furnace of the present invention;
Fig. 6 is the structural representation of the automobile-used gas-holder of application of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments to the detailed description of the invention.
The schema of production gac of the present invention comprises the steps: as shown in Figure 4
(1) abrasive dust: select for use high-quality low culm in Xinjiang to be ground into coal dust, the granularity of coal dust is the 180-200 order.Thinner the coal mill as much as possible under the situation that industrial condition allows, specific surface area is big more, easy bonding together more just between the raw material powder or between raw material powder and the binding agent.The thin more formation that also helps initial hole of raw material granularity, and make the particle surface after the moulding more smooth, quality is finer and close, and still, granularity is meticulous also brings certain difficulty to technology: reduced the abrasive dust plant factor, increased energy consumption, caused product cost to increase; Raw material granularity is meticulous, and fines may produce slip in tar when moulding, thereby influences normally carrying out of moulding.Usually, former pulverized coal particle degree requires to be the 180-200 order that percent of pass is 90%.
(2) kneading and compacting: can adopt the traditional method kneading and compacting.Coal dust is mixed with powdery KOH, and the granularity of KOH is 50 orders, and percent of pass is 90%.Wherein the weight percent of activator is 75-80%, and the weight percent of coal dust is 20-25%; Coal tar with the total amount 3-5% that adds materials in the said mixture material, fully raw material stirring is reconciled into paste, sending into shaper makes material under high pressure pass through mould, complicated elasticity and viscous deformation under high pressure take place in coal cream, finally extruded into strips, press strip is that diameter 10mm length is the column form object of 80-100mm.
(3) charing-activation-molecular sieveization: the column form object of press strip is put into activation furnace, and activation furnace is sealed, and the temperature of activation furnace is heated to 800-830 ℃, activation furnace body of heater rotation in the process of heating, the omnidistance hyperthermia and superheating steam that feeds is as secondary activation agent.Simultaneously, produce CO in heat-processed, feeding superheated vapo(u)r can discharge the CO that produces in the heat-processed from tail gas discharging pipe, avoids producing burning.Displacement is mixed mutually in the moving process from top to bottom in stove for carbonized material, reacts with the hyperthermia and superheating water vapor, at 800-830 ℃ of constant temperature 2-2.5 hour, carries out charing-activation-molecular sieveization and obtains gac.
(4) pickling: can adopt traditional acid washing method.Contain impurity such as ash content and molysite in the gac, the acceptable salts acid elution is removed.Pickling and washing are carried out in pickling tub.Pickling tub is a rectangle, long 1.65 meters, and wide 1.15 meters, dark about 3 meters, make with acid-proof cement, be coated with Resins, epoxy again.During pickling, in the pond, put into a small amount of hot water, pour gac into, add again hot water with charcoal all wetting after, add about 20% hydrochloric acid, directly stir with steam heating, make to mix.Utilize vacuum system that gac is sucked in the high-level storage groove then, be cooled to use water purification flush away acid solution and impurity again below 60 degrees centigrade, obtain pH value at 6-7, moisture 50% activated carbon product.
(5) oven dry: use the tunnel passage type kiln,, obtain active carbon finished products with above-mentioned aqueous gac hot-air dry 2.0-2.5 hour with 70-75 ℃.
When feeding the hyperthermia and superheating steam, 20%KOH solution is entered in the activation furnace with Sprayable with the hyperthermia and superheating steam, replenish and activate, make reaction more violent, more abundant, the better quality of gac.
Filter the back and collect the filtrate of containing the KOH activator, purge by superheated vapo(u)r and make its regeneration, obtain the KOH solid or add part KOH again obtaining 20%KOH solution.Like this, can solve the pollution of activator, help environmental protection, save raw material simultaneously, reduce production cost.
It is the graphite-like crystallite that this technology is produced the gac main structure body, its structural representation is respectively as Fig. 1, Fig. 2 and shown in Figure 3, each graphite-like crystallite is to be made of 3～4 layers of thin layer that becomes with carbon atom arrangement, in each layer, carbon atom is arranged in regular hexagon regularly, forms aromatic structure, and forms netted two dimensional structure by 20～30 such regular hexagons, between adjacent two layers, the relative position of carbon atom forms turbostratic.Specific surface area 〉=the 2500m of gac
2/ g, pore volume are 0.5-1.5g/ml, and bulk density is 0.25-0.4, pH value ≈ 7, and the acid amount is neutrality, ash＜0.1%.
The activation furnace that the present invention produces gac can be transformed on the basis of existing activation furnace and obtain.The synoptic diagram of activation furnace of the present invention as shown in Figure 5; between the two ends of body of heater 17 and bell 3,11, be connected with the chain-drive mechanism of forming by chain 7, sprocket wheel 8 and electric motor 6 respectively; be provided with bell protective layer 9, temperature-measuring port 10 and feed-pipe 13 in the one end bell 11; be batch production owing to produce; body of heater is connected with bolt with bell, and when filling with substance is laid down bell and is opening for feed.Feed-pipe uses sealing bearing 12 to be installed on the bell 11.Be provided with bell protective layer 5, temperature-measuring port 4 and discharge port 18 in the other end bell 3, improved body of heater arranged outside has heating zone 16, according to actual needs, can select to use type of heating such as electrically heated or combustion gas heating.Be provided with tail gas discharging pipe 1 in the bell 3 of discharge port 18 1 sides, the fixed tail gas discharging pipe uses sealing bearing 2 to be installed on the bell, and bell uses bolt to be connected with body of heater.During discharging, lay down bell and be discharge port.Feed-pipe 13 is connected with hyperthermia and superheating vapour inlet 14, and the hyperthermia and superheating vapour inlet is connected with 20%KOH solution inlet 15.Charing like this, activation, molecular sieveization can be carried out in same activation furnace.During installation, it is 15 degree that obliquity is installed.
Embodiment 1
Adopt aforesaid method, with granularity is 180 purpose coal dust 25kg, granularity is 50 purpose KOH75kg, coal tar 3kg, thorough mixing, the press strip diameter is 10mm, length is the column form object of 80mm, is heated to 800 ℃ in activation furnace, constant temperature 2 hours, omnidistance logical hyperthermia and superheating steam, charing-activation-molecular sieveization obtains gac.Pickling afterwards is cooled to 50 degrees centigrade, uses water purification flush away acid solution and impurity again, and obtaining pH value is 7, moisture 50% activated carbon product.With 70 ℃ of hyperthermia and superheating vapour seasonings 2 hours, obtain active carbon finished products.
Filter the back and collect the filtrate of containing the KOH activator,, obtain the KOH solid for using by the regeneration of hyperthermia and superheating purge vapor.
Adopt aforesaid method, granularity is 200 purpose coal dust 20kg, granularity is 50 purpose KOH80kg, coal tar 5kg, thorough mixing, the press strip diameter is 10mm, length is the column form object of 100mm, is heated to 830 ℃ in activation furnace, constant temperature 2.5 hours, omnidistance logical hyperthermia and superheating steam, charing-activation-molecular sieveization obtains gac.Pickling afterwards is cooled to 40 degrees centigrade, uses water purification flush away acid solution and impurity again, and obtaining pH value is 6, moisture 50% activated carbon product.With 75 ℃ of hyperthermia and superheating vapour seasonings 2.5 hours, obtain active carbon finished products.
In logical hyperthermia and superheating steam, 20%KOH solution is entered in the activation furnace with Sprayable with superheated vapo(u)r.
Filter the back and collect the filtrate of containing the KOH activator, purge regeneration, obtain KOH solution, add part KOH again and obtain 20%KOH solution for using by superheated vapo(u)r.
Adopt aforesaid method, granularity is 190 purpose coal dust 22kg, granularity is 50 purpose KOH78kg, coal tar 4kg, thorough mixing, the press strip diameter is 10mm, length is the column form object of 90mm, is heated to 810 ℃ in activation furnace, constant temperature 2.2 hours, omnidistance logical hyperthermia and superheating steam, charing-activation-molecular sieveization obtains gac.Pickling afterwards is cooled to 30 degrees centigrade, uses water purification flush away acid solution and impurity again, and obtaining pH value is 7, moisture 50% activated carbon product.With 72 ℃ of hyperthermia and superheating vapour seasonings 2.2 hours, obtain active carbon finished products.
In logical hyperthermia and superheating steam, 20%KOH solution is entered in the activation furnace with Sprayable with superheated vapo(u)r.
Filter the back and collect the filtrate of containing the KOH activator, purge regeneration, obtain KOH solution, add part KOH again and obtain 20%KOH solution for using by superheated vapo(u)r.
Because gac of the present invention has very strong adsorptive power, has broad prospects in the automobile application facet.The invention also discloses a kind of automobile-used gas-holder, its synoptic diagram as shown in Figure 6, in tank body 24, be provided with Sweet natural gas absorption super-activated carbon of the present invention as adsorption bed 19, be embedded with energy-storage travelling wave tube 23 in the adsorption bed, one end of tank body is fixed with safety valve 22, is fixed with filter screen 20 between adsorption bed and safety valve.The volume ratio of energy-storage travelling wave tube and gac is 12.5: 87.5.Described energy-storage travelling wave tube comprises metal tube, is sealed with salt hydrate in the described metal tube.Safety valve is provided with gas passage 21.Because the heat of adsorption effect is influential to charging and discharging the gas process, in adsorption bed, buries and put energy-storage travelling wave tube in order to alleviate the heat of adsorption effect, with salt hydrate, as NaHPO
412H
2O, HFC-134a, magnesium nitrate lithium hydrate, Na
2CO
37H
2O etc. are packaged in the thin metal pipe, and the dehydration of salt hydrate or the reaction heat of hydration reaction both can have been alleviated the temperature rise or the temperature drop of adsorption bed.This method can guarantee simultaneously that inflation or deflation course are all near isothermal.This method can increase by 25% storage capacity, but energy-storage travelling wave tube itself occupies 12.5% bed volume, and it also can relax the influence to adsorption bed gas storage capacity that temperature variation causes fully, and the gas-storing capacity in the time of can making fast aeration like this increases about 27%.
This innovative technology has great technical superiority, have than existing natural gas vehicle with when storage the gas-holder temperature sharply rise, cause the significantly reduction of gas-storing capacity; Resolve more thoroughly, residual cushion steam is few; The unit adsorptive capacity is big, can obviously improve the advantages such as efficient of automobile.
The regeneration of Sweet natural gas absorption super-activated carbon:
Super-activated carbon has 2500m
2The specific surface area that/g is above, and micropore is a lot.Therefore, if in the Sweet natural gas impurities attached to or condensation at activated carbon surface, its effective ratio area numerical value is fallen sharply, even block micropore, and then reduce its gas storage capability.The value of the gac of adorning is higher than the value of storage tank itself far away in the storage tank, and therefore, particularly important just seems the work-ing life that how to prolong gac.The gac continuity uses its adsorptive power to descend, so the regeneration techniques of gac is the gordian technique of absorption gas storage.
The active carbon regenerating technology of innovation uses rare gas element and tensio-active agent to regenerate.3.5MPa, 150 ℃ rare gas element and the gas passage of tensio-active agent on safety valve are filled in the gas-holder, tensio-active agent is fully contacted with gac, under the effect of tensio-active agent, come off fully attached to the impurity in the activated carbon capillary, follow rare gas element and give off jar; Reach the regenerated purpose.
Test the influence of specific surface area to adsorptive capacity:
Three kinds of methods are adopted in test: pressure transmitter method, discharge method, weighting method.Laboratory adopts pressure sensor method wherein; Under special high pressure pilot plant conditions, adopt discharge method and weighting method to carry out simultaneously.
The Sweet natural gas adsorptive capacity of all kinds of sorbent materials under the table 1 different pressures condition
| 1 # | 2 # | 3 # | |||
| Pressure (MPa) | Adsorptive capacity (g/g) | Pressure (MPa) | Adsorptive capacity (g/g) | Pressure (MPa) | Adsorptive capacity (g/g) |
| 3.0 | 0.15 | 3.0 | 0.22 | 3.0 | 0.26 |
| 4.0 | 0.20 | 4.0 | 0.25 | 4.0 | 0.31 |
| 5.0 | 0.23 | 5.0 | 0.29 | 5.0 | 0.36 |
Wherein 1
#, 2
#, 3
#The surface-area of super-activated carbon is respectively 1634,2069,2745m
2/ g.
Table 24
#Super-activated carbon gas cylinder experimental result
| Adsorptive capacity (Kg/L) | Desorption rate (m 3/L) | Degassing rate (%) | |||
| Pressure (MPa) | Adsorptive capacity | Desorption rate (m 3/L) | Desorption rate (V/V) | ||
| (Kg/L) | (V/V) | ||||
| 5.0 | 0.169 | 208.1 | 0.152 | 188.5 | 90.8 |
| 5.0 | 0.168 | 208.0 | 0.151 | 188.4 | 90.7 |
Here 4
#Super-activated carbon specific surface area: 2058m
2/ g; Gas cylinder volume: 8L; Sorbent material loading amount: 5L; Absorption is directly adopted untreated blowout Sweet natural gas with Sweet natural gas; Room temperature absorption.
Can be learnt by above data: the size of gac specific surface is the important factor that influences the Sweet natural gas adsorptive capacity, can only reach 1000m and the specific surface area of common gac is the highest
2About/g.
Although the disclosed a kind of Sweet natural gas absorption super-activated carbon and production method and activation furnace thereof of relating to carried out special description with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all at this
Within the scope of invention.
Claims (6)
1. a Sweet natural gas absorption super-activated carbon is characterized in that, is that raw material mixes with coal dust, activator and coal tar, feeds superheated vapo(u)r under sealed state, obtains in a 800-830 ℃ of constant temperature 2-2.5 hour charing-activation-molecular sieveization; Wherein the weight percent of activator is 75-80%, and the weight percent of coal dust is 20-25%, and coal tar accounts for the 3-5% of coal dust and activator gross weight, and described activator is KOH; Constituting the super-activated carbon main structure body is the graphite-like crystallite, each graphite-like crystallite is to be made of 3～4 layers of thin layer that becomes with carbon atom arrangement, in each layer, carbon atom is arranged in regular hexagon regularly, form aromatic structure, and form netted two dimensional structure, between adjacent two layers by 20～30 such regular hexagons, the relative position of carbon atom forms turbostratic, its specific surface area 〉=2500m
2/ g, pore volume are 0.5-1.5g/ml, and bulk density is 0.25-0.4.
2. the production method of a Sweet natural gas absorption super-activated carbon is characterized in that, comprise the steps: (1) abrasive dust: raw coal is pulverized, and the granularity of coal dust is the 180-200 order;
(2) kneading and compacting: coal dust is mixed with powdery KOH, and the granularity of KOH is 50 orders, and wherein the weight percent of KOH is 75-80%, and the weight percent of coal dust is 20-25%; Coal tar with the total amount 3-5% that adds materials in the said mixture material fully reconciles into paste with raw material stirring, and sending into the shaper press strip is that diameter 10mm length is the column form object of 80-100mm;
(3) charing-activation-molecular sieveization: the column form object of press strip is put into activation furnace and is sealed, and the temperature of activation furnace is heated to 800-830 ℃, the rotation of activation furnace body of heater at 800-830 ℃ of constant temperature 2-2.5 hour, is carried out charing-activation-molecular sieveization and is obtained gac in the process of heating; The omnidistance hyperthermia and superheating steam that feeds prevents the CO burning that produces in the heat-processed as secondary activation agent;
(4) pickling: above-mentioned gac is removed impurity with chlorohydric acid pickling, and acid solution and impurity are removed in washing afterwards, are cooled to filter below 60 ℃ obtain pH value at 6-7, moisture 50% gac again;
(5) oven dry: hot-air dry 2.0-2.5 hour of 70-75 ℃ of will be above-mentioned aqueous gac usefulness obtains active carbon finished products.
3. the production method of Sweet natural gas absorption super-activated carbon according to claim 2 is characterized in that, when feeding superheated vapo(u)r 20%KOH solution is entered in the activation furnace with Sprayable with superheated vapo(u)r.
4. according to the production method of claim 2 or 3 described Sweet natural gases absorption super-activated carbons, it is characterized in that, filter the back and collect the filtrate of containing the KOH activator, purge regeneration, obtain the KOH solid or add part KOH again obtaining 20%KOH solution by superheated vapo(u)r.
5. activation furnace of producing gac; between the two ends of body of heater and bell, be connected with chain-drive mechanism; be provided with bell protective layer, temperature-measuring port and feed-pipe in the one end bell; be provided with bell protective layer, temperature-measuring port and discharge port in the other end bell; it is characterized in that described body of heater arranged outside has the heating zone, be provided with tail gas discharging pipe in the bell of described discharge port one side; described feed-pipe is connected with steam entry, and described steam entry is connected with KOH solution inlet.
6. automobile-used gas-holder, it is characterized in that, in tank body, be provided with the described Sweet natural gas absorption of claim 1 super-activated carbon, be embedded with energy-storage travelling wave tube in the described adsorption bed as adsorption bed, one end of described tank body is fixed with safety valve, is fixed with filter screen between adsorption bed and safety valve; The volume ratio of described energy-storage travelling wave tube and gac is 12.5: 87.5, and described energy-storage travelling wave tube comprises metal tube, is sealed with salt hydrate in the described metal tube; Described safety valve is provided with gas passage.
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| CN105289478A (en) * | 2015-11-27 | 2016-02-03 | 榆林学院 | Device and method for preparing molecular sieve from pulverized coal |
| CN110330016A (en) * | 2019-08-10 | 2019-10-15 | 哈尔滨工业大学 | An a kind of step cooperative development method of anthracite-base porous carbon graphite microcrystal and hole |
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| CN1057277C (en) * | 1997-11-20 | 2000-10-11 | 中国科学院山西煤炭化学研究所 | Preparation of activated carbon with high specific surface area |
| CN1057065C (en) * | 1998-06-12 | 2000-10-04 | 吉林大学 | Preparation of superhigh specific surface area active carbon |
| CN2359270Y (en) * | 1998-12-29 | 2000-01-19 | 钱铭铨 | Active carbon indirect heating carbon activation furnace |
| US7232790B2 (en) * | 2001-09-11 | 2007-06-19 | Showa Denko K.K. | Activated carbon, method for production thereof and use thereof |
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2005
- 2005-12-02 CN CNB2005101220813A patent/CN100354201C/en not_active Expired - Fee Related
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| JP2014530167A (en) * | 2011-09-28 | 2014-11-17 | コーニング インコーポレイテッド | Production method of alkaline activated carbon |
| KR101965018B1 (en) * | 2011-09-28 | 2019-04-02 | 코닝 인코포레이티드 | Method for Making Alkali Activated Carbon |
| CN104258834A (en) * | 2014-10-10 | 2015-01-07 | 宁夏宝塔石化科技实业发展有限公司 | Device and method for segmentally activating natural gas absorption material by using acid-base salt |
| CN105060290A (en) * | 2015-07-16 | 2015-11-18 | 陕西煤业化工技术研究院有限责任公司 | Preparation method of coal-based activated carbon with low ash and high specific surface area |
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| CN105289478A (en) * | 2015-11-27 | 2016-02-03 | 榆林学院 | Device and method for preparing molecular sieve from pulverized coal |
| CN105289478B (en) * | 2015-11-27 | 2017-11-17 | 榆林学院 | A kind of device and method that molecular sieve is prepared using face coal |
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| CN114291816A (en) * | 2021-12-30 | 2022-04-08 | 咸宁嘉竹新材料科技有限公司 | Continuous washing system of micropore active carbon crystal |
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