CN104276570B - The preparation method of high specific gravity agglomerated activated carbon - Google Patents
The preparation method of high specific gravity agglomerated activated carbon Download PDFInfo
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- CN104276570B CN104276570B CN201410569246.0A CN201410569246A CN104276570B CN 104276570 B CN104276570 B CN 104276570B CN 201410569246 A CN201410569246 A CN 201410569246A CN 104276570 B CN104276570 B CN 104276570B
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Abstract
The invention belongs to the technology of preparing of activated carbon, it is specially the preparation method of a kind of high specific gravity agglomerated activated carbon, comprise the steps: (1), coal blending: selecting Datong District, the Jurassic Period bituminous coal of Shen Fu two places is raw material, carries out proportioning by the part by weight of 35:65, and makes its mix homogeneously；(2), pulverizing: the mixed coal that said ratio is good being put into flour mill and carries out pulverizing, granularity requirements 325 mesh 90% passes through；(3), briquetting crushes: carries out briquetting in coal dust adds cuber, and is crushed to 3～8mm, it is desirable to molding mass intensity is more than 90%；(4), carbonization: molding mass carries out carbonization in vertical retort, and temperature is 600～650 DEG C, discharging time interval 5min.The present invention is reasonable in design, is adjusted material choice, raw coal proportion, charring process and equipment in agglomerated activated carbon production process, has prepared a kind of Novel pressing block activated carbon.
Description
Technical field
The invention belongs to the technology of preparing of activated carbon, the preparation method of a kind of high specific gravity agglomerated activated carbon.
Background technology
Agglomerated activated carbon be select high-quality bituminous coal be raw material, through coal blending, pulverizing, briquetting, broken, carbonization, activate, sieve the activated carbon with good adsorption properties that 7 procedures such as bag are produced, it is flourishing that it has holes of products gap structure, performance is uniform, stable, adsorption capacity is big, the rate of filtration waits good characteristic soon, is widely used in the fields such as water process and solution purity.
The agglomerated activated carbon heaping weight produced by prior art is less, and only 350～400g/L, it is impossible to meet some field higher to heaping weight requirement, limit the range of agglomerated activated carbon；It addition, swinging retort has the shortcomings such as floor space is big, filling rate is low, energy consumption is big, add production cost to a certain extent.
Summary of the invention
Material choice, raw coal proportion, charring process and equipment in agglomerated activated carbon production process are adjusted by the present invention, it is provided that the preparation method of a kind of Novel pressing block activated carbon.
The present invention adopts the following technical scheme that realization:
The preparation method of a kind of high specific gravity agglomerated activated carbon, comprises the steps:
(1), coal blending: selecting Datong District, the Jurassic Period bituminous coal of Shen Fu two places is raw material, carries out proportioning by the part by weight of 35:65, and makes its mix homogeneously；
(2), pulverizing: the mixed coal that said ratio is good being put into flour mill and carries out pulverizing, granularity requirements 325 mesh 90% passes through；
(3), briquetting crushes: carries out briquetting in coal dust adds cuber, and is crushed to 3～8mm, it is desirable to molding mass intensity is more than 90%；
(4), carbonization: molding mass carries out carbonization in vertical retort, and temperature is 600～650 DEG C, discharging time interval 5min；
(5), activation: carbonized material adding SLEP stove and activates, temperature is 880 DEG C～960 DEG C, and steam pressure is 0.3～0.59MPa, and discharging time is spaced apart 30min；
(6), sieve bag: activated material crushes and is sieved to the agglomerated activated carbon finished product of 8～20 mesh.
Shenfu coalfield is positioned at Shenmu County northernmost of Shaanxi Province, border of the county, Fugu two, geographical coordinate is: east longitude 110 ° 05 '-110 ° 50 ', north latitude 38 ° 52 '-39 ° 27 ', east is with coal-smits as boundary, north reaches illiteracy border, Shan and adjoins with Dongsheng, Inner Mongolia mining area, south is coal-smits along Henan, open country, cave down to Ma Jiata ditch, and this is bordered on Yulin-Shenmu mining area with keyhole line.Thing is wide 50 kilometers, 20-60 kilometer long from south to north, and area about 2400 square kilometres is connected with Dongsheng, Inner Mongolia coalfield, and coal seam is stable, buries shallow, easily exploits.Belong to high-quality thermal coal.
Residing for coal carbonization degree and coal-forming time, the pressure and temperature on stratum is relevant.Time is the longest, and temperature is the highest, and pressure is the biggest, then carbonizing degree is the highest.Owing to carbonizing degree is affected by many factors, thus the same coal-forming age produce coal and differ, identical coal is probably derived from the different ages.Such as: Jurassic Coal is commonly lower-grade metamorphic bituminous and bottle coal, and the Jurassic Coal of Ningxia Rujigou is owing to being affected by volcano waste heat, accelerates carbonization process, and coal is anthracite.The jet coal of Fushun is from the Tertiary Period, and the jet coal of Fuxin is from the Cretaceous period, and the jet coal of Huating Gansu is from Jurassic Period, and the jet coal of the quasi-Ge Er in the Inner Mongol is from Permo-carboniferous period.China's Jurassic Coal is concentrated mainly on the Inner Mongol, Shaanxi, Gansu, area, boundary, provinces and regions, Ningxia four, and in each coalforming period, the average sulfur content of Jurassic Coal is minimum, and average dust burdening is minimum, and this is the sharpest edges of Jurassic Coal.Jurassic coal scope is from brown coal to anthracite, in explored Jurassic Coal reserves, lower-grade metamorphic bituminous accounts for 96%, and bottle coal accounts for 3%, and other account for 1%.
It is more that agglomerated activated carbon is typically employed in tap water purifying field, is primarily due to wherein micropore flourishing, and usual mesopore proportion has reached more than 50%, and owing to specific surface area is big, so being widely used at water purification industry.The agglomerated activated carbon that said new method produces, due to the increase of bulk density, can make the dischargeable capacity of activated carbon increase, by the porous feature of activated carbon, make the harmful components such as heavy metal in its active adsorption water, reduce stink and the turbidity of tap water, improve mouthfeel.
The activated carbon produced by this method, owing to bulk density is high, so in use, under same volume conditions, filling rate is high, and adsorption area increases, and makes filter efficiency increase, obvious on clean-up effect, has reached country's hygienic requirements to material for water treatment.
Compared with prior art, advantage is as follows:
1, replacing traditional rotary furnace to carry out carbonization with vertical retort, floor space is little, and equipment filling rate is high, and reduces energy consumption.
The iodine number of the agglomerated activated carbon 2, produced is more than 950mg/g, and proportion may be up to 470～520g/L.
The present invention is reasonable in design, is adjusted material choice, raw coal proportion, charring process and equipment in agglomerated activated carbon production process, has prepared a kind of Novel pressing block activated carbon.
Detailed description of the invention
Below the specific embodiment of the present invention is described in detail.
Embodiment
1
The preparation method of a kind of high specific gravity agglomerated activated carbon, comprises the steps:
(1), coal blending: selecting Datong District, the Jurassic Period bituminous coal of Shen Fu two places is raw material, carries out proportioning by the part by weight of 35:65, and makes its mix homogeneously；
(2), pulverizing: the mixed coal that said ratio is good being put into flour mill and carries out pulverizing, granularity requirements 325 mesh 90% passes through；
(3), briquetting crushes: carries out briquetting in coal dust adds cuber, and is crushed to 8mm, it is desirable to molding mass intensity is more than 90%；
(4), carbonization: molding mass carries out carbonization in vertical retort, and temperature is 630 DEG C, discharging time interval 5min；
(5), activation: carbonized material adding SLEP stove and activates, temperature is 880 DEG C, and steam pressure is 0.5MPa, and discharging time is spaced apart 30min；
(6), sieve bag: activated material crushes and is sieved to the agglomerated activated carbon finished product of 8～20 mesh.
Embodiment
2
The preparation method of a kind of high specific gravity agglomerated activated carbon, comprises the steps:
(1), coal blending: selecting Datong District, the Jurassic Period bituminous coal of Shen Fu two places is raw material, carries out proportioning by the part by weight of 35:65, and makes its mix homogeneously；
(2), pulverizing: the mixed coal that said ratio is good being put into flour mill and carries out pulverizing, granularity requirements 325 mesh 90% passes through；
(3), briquetting crushes: carries out briquetting in coal dust adds cuber, and is crushed to 5mm, it is desirable to molding mass intensity is more than 90%；
(4), carbonization: molding mass carries out carbonization in vertical retort, and temperature is 650 DEG C, discharging time interval 5min；
(5), activation: carbonized material adding SLEP stove and activates, temperature is 960 DEG C, and steam pressure is 0.59MPa, and discharging time is spaced apart 30min；
(6), sieve bag: activated material crushes and is sieved to the agglomerated activated carbon finished product of 8～20 mesh.
Embodiment
3
The preparation method of a kind of high specific gravity agglomerated activated carbon, comprises the steps:
(1), coal blending: selecting Datong District, the Jurassic Period bituminous coal of Shen Fu two places is raw material, carries out proportioning by the part by weight of 35:65, and makes its mix homogeneously；
(2), pulverizing: the mixed coal that said ratio is good being put into flour mill and carries out pulverizing, granularity requirements 325 mesh 90% passes through；
(3), briquetting crushes: carries out briquetting in coal dust adds cuber, and is crushed to 3mm, it is desirable to molding mass intensity is more than 90%；
(4), carbonization: molding mass carries out carbonization in vertical retort, and temperature is 620 DEG C, discharging time interval 5min；
(5), activation: carbonized material adding SLEP stove and activates, temperature is 900 DEG C, and steam pressure is 0.4MPa, and discharging time is spaced apart 30min；
(6), sieve bag: activated material crushes and is sieved to the agglomerated activated carbon finished product of 8～20 mesh.
Embodiment
4
The preparation method of a kind of high specific gravity agglomerated activated carbon, comprises the steps:
(1), coal blending: selecting Datong District, the Jurassic Period bituminous coal of Shen Fu two places is raw material, carries out proportioning by the part by weight of 35:65, and makes its mix homogeneously；
(2), pulverizing: the mixed coal that said ratio is good being put into flour mill and carries out pulverizing, granularity requirements 325 mesh 90% passes through；
(3), briquetting crushes: carries out briquetting in coal dust adds cuber, and is crushed to 6mm, it is desirable to molding mass intensity is more than 90%；
(4), carbonization: molding mass carries out carbonization in vertical retort, and temperature is 600 DEG C, discharging time interval 5min；
(5), activation: carbonized material adding SLEP stove and activates, temperature is 930 DEG C, and steam pressure is 0.3MPa, and discharging time is spaced apart 30min；
(6), sieve bag: activated material crushes and is sieved to the agglomerated activated carbon finished product of 8～20 mesh.
Claims (1)
1. the preparation method of a high specific gravity agglomerated activated carbon, it is characterised in that: comprise the steps:
(1), coal blending: selecting Datong District, the Jurassic Period bituminous coal of Shen Fu two places is raw material, carries out proportioning by the part by weight of 35:65, and makes its mix homogeneously；
(2), pulverizing: the mixed coal that said ratio is good being put into flour mill and carries out pulverizing, granularity requirements 325 mesh 90% passes through；
(3), briquetting crushes: carries out briquetting in coal dust adds cuber, and is crushed to 3mm, it is desirable to molding mass intensity is more than 90%；
(4), carbonization: molding mass carries out carbonization in vertical retort, and temperature is 620 DEG C, discharging time interval 5min；
(5), activation: carbonized material adding SLEP stove and activates, temperature is 900 DEG C, and steam pressure is 0.4MPa, and discharging time is spaced apart 30min；
(6), sieve bag: activated material crushes and is sieved to the agglomerated activated carbon finished product of 8～20 mesh.
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