WO2008022562A1 - Procédé de régénération destiné à un matériau filtrant et adsorbant utilisé dans le traitement des eaux - Google Patents

Procédé de régénération destiné à un matériau filtrant et adsorbant utilisé dans le traitement des eaux Download PDF

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Publication number
WO2008022562A1
WO2008022562A1 PCT/CN2007/002482 CN2007002482W WO2008022562A1 WO 2008022562 A1 WO2008022562 A1 WO 2008022562A1 CN 2007002482 W CN2007002482 W CN 2007002482W WO 2008022562 A1 WO2008022562 A1 WO 2008022562A1
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WIPO (PCT)
Prior art keywords
steam
flue gas
adsorbent
activation
saturated
Prior art date
Application number
PCT/CN2007/002482
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English (en)
Chinese (zh)
Inventor
Dawei Zhang
Original Assignee
Dawei Zhang
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Filing date
Publication date
Application filed by Dawei Zhang filed Critical Dawei Zhang
Publication of WO2008022562A1 publication Critical patent/WO2008022562A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
    • B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
    • B01J20/3466—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase with steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/30—Active carbon
    • C01B32/354—After-treatment
    • C01B32/36—Reactivation or regeneration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters

Definitions

  • the invention belongs to a material processing method, and particularly relates to a regeneration method of a filter adsorbent for treating industrial wastewater and urban sewage. Background technique
  • the regeneration method can restore the adsorption capacity of the filter adsorbent and can be reused, reducing the cost of water treatment.
  • the regeneration method provided by the present invention has the following steps -
  • the saturated filter adsorbent having a water content of ⁇ 30% is sent to a heating furnace for treatment, and is heated at a rate of 4 ° C to 6 ° C / minute, and is raised to 120 to 400 ° C, preferably to 320 to 400 ° C. During this process, the moisture in the filtered adsorption pores and a part of the low-boiling organic matter are volatilized;
  • the steam (saturated) consumption is 0. 5 tons ⁇ 1 ton / ton of filtered adsorbent, the flue gas The ratio to the steam is 1:5, and the activation time is 20 to 60 minutes.
  • the flue gas adopts the hot flue gas generated by the combustion of the fuel during the operation of the heating furnace, and the relationship between the activation temperature, the steam (saturation) consumption, and the activation time is expressed within the range described in the present invention: the activation temperature is improved, The amount of steam consumed is reduced, and the activation time is shortened. Conversely, the activation temperature is lowered, the amount of steam consumed is increased, and the activation time is prolonged; the increase in the amount of steam can also lower the activation temperature and shorten the activation time.
  • the saturated filter adsorbent having a water content of ⁇ 30% is obtained by transferring a saturated filtered adsorbent to a dewatering apparatus for dehydration.
  • the filtered adsorbent for regeneration refers to anthracite, lean coal, coal, coking coal, fat coal, gas coal, long flame coal, lignite as raw materials, and coal processing products such as coke, basket carbon, coke.
  • the filter adsorbent prepared from the raw material is pulverized and screened, and the raw material having a particle size of ⁇ 10 mm is heated to 120 to 150 ° C for drying; then the temperature is raised to 350 to 400 at a rate of 4 to 6 ° C / minute.
  • the steam and flue gas are subjected to an activation reaction, wherein the steam (saturation) consumption is 0.5 to 3 tons/ton of coal, and the ratio of the flue gas to the steam is 1:5 or 0;
  • the time is 20 to 60 minutes and the activation temperature is 70 (TC ⁇ 85 (TC.
  • the main data and parameters of the filtered adsorbent are:
  • Iodine adsorption value 260 ⁇ 720mg/g
  • Chemical oxygen demand (COD) Adsorption capacity 200 ⁇ 3, 000mg/g.
  • the saturated filtered adsorbent is regenerated by the method of the present invention, the iodine value adsorption value is restored to the level before use, and the effect of treating the industrial wastewater and the municipal sewage is restored to the level before use.
  • the saturated filter adsorbent in the water treatment device is discharged and dehydrated to make the water content of the saturated filter adsorbent ⁇ 2
  • the dehydrated saturated filter adsorbent is sent to a heating device, and is heated at a rate of 4 ° C to 6 ° C / min, and raised to 120 to 400 ° C, preferably to 320 to 400 ° C.
  • filtration adsorption The moisture in the feed and a portion of the low boiling organic matter are volatilized;
  • the steam (saturated) consumption is 0. 5 tons ⁇ 1 ton / ton filter
  • the temperature is increased to a temperature of 8 to 10 ⁇ / minute to the steam and flue gas activation, wherein the temperature does not exceed 850 ° C
  • the steam (saturation) consumption is 0. 5 tons ⁇ 1 ton / ton filter
  • the adsorbent, the ratio of the flue gas to the steam is 1:5, and the activation time is 20 to 60 minutes.
  • the flue gas and steam are simultaneously introduced.
  • the flue gas and steam are not simultaneously introduced, i.e., steam is first activated by heating to 700 ° C, and activated by flue gas after 5-10 minutes.
  • the steam is water vapor.
  • the main components of the flue gas are carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen and water vapor, and the flue gas is mainly generated from the combustion process of the fuel (coal, gas, natural gas, coke) in the heating equipment such as the heating furnace.
  • the flue gas may also be a flue gas generated during the combustion of fuel (coal, gas, natural gas) to a steam boiler that supplies steam in the adsorbent preparation equipment.
  • the steam is produced and supplied by a steam boiler, which may be saturated steam or superheated steam, preferably superheated steam, which can reduce the heat absorbed by the steam after entering the filter adsorbent regeneration device, and maintain the regeneration equipment. temperature.
  • a steam boiler which may be saturated steam or superheated steam, preferably superheated steam, which can reduce the heat absorbed by the steam after entering the filter adsorbent regeneration device, and maintain the regeneration equipment. temperature.
  • the apparatus for regenerating a saturated filtered adsorbent of the present invention may be a well-known apparatus, basically: a dewatering apparatus, a conveying apparatus, a steam boiler, and a heating apparatus which can be heated to dryness, distillation, carbonization, and activation temperature.
  • the dewatering device (such as a centrifugal dewatering machine) is used for dehydrating the saturated filtered adsorbent; the conveying device sends the saturated filtered adsorbent after dehydration to the heating furnace; the steam boiler is used to generate steam The dried, dry distillation, carbonized filter adsorbent is activated; the heating device is a common heating device for drying, retorting, charring and activating the saturated filtered adsorbent with temperature rise control.
  • a preferred apparatus for drying, drying, charring, and activating operations may be a "slewing semi-coke filter processing unit" available under application number 200410100439. 8 (publication number CN1660964).
  • the rotary semi-coke filter processing unit drum has a double cylinder structure and is composed of an inner cylinder and an outer cylinder.
  • the inner cylinder diameter is 900-4 000 mm
  • the outer cylinder diameter is 1,500-5, 200.
  • the length-to-diameter ratio of the drum is 12:1
  • the ring gear, the reinforcing ring, the rolling ring and the sliding sealing device are respectively arranged in different parts outside the drum
  • the interlayer between the inner cylinder and the outer cylinder is a gas heating chamber
  • the inner cylinder is coal
  • the coking chamber is divided into a drying section and a dry distillation section; when the rotary semi-coke filter material processing unit regenerates the filtered adsorbent, the inner cylinder of the unit is increased in the activation section.
  • the drum of the unit is placed obliquely and is located on the two roller assemblies.
  • the transmission is driven by the ring gear on the drum.
  • the rotation speed of the drum is 3-5 rpm.
  • the temperature measurement system is installed on the drum for monitoring the drum.
  • the temperature of each section; one end of the outer cylinder of the drum is connected with the combustion chamber, and the other end is connected with the flue gas collecting chamber; one end of the inner cylinder of the drum is connected with the upper sealing chamber, and the other end is connected with the lower sealing chamber;
  • the flue gas discharge device, the flue gas collection chamber and the heat exchanger are connected by a pipe.
  • the upper sealing chamber is equipped with a screw feeder, a sealed coal charging box, a coal storage bin, a cyclone separator, a gas purifying device and a gas system; an ignition device is installed in the combustion chamber of the unit, and the gas supplied by the gas generating furnace is used in the unit Ignition; heating rate at ignition is 4O/min.
  • the outside of the unit is a thermal insulation layer, the thermal insulation material of the drum part is made of aluminum silicate fiber felt, and the protective shell made of outer steel plate is used. Other parts are made of ordinary heat insulation material according to the surface temperature.
  • the iodine value adsorption value is the main parameter of the filter adsorbent of the present invention, and can be determined by the following method -
  • the filter adsorbent was pulverized to 200 mesh powder, and each flask was charged with 0.5 g of adsorbent, 50 ml of iodine solution, shaken for 15 minutes, allowed to stand for 3 minutes, and poured into a filter bottle (filtered on a triangular flask) ). Filter out the stock solution.
  • the saturated filtered adsorbent after treating the middle-stage wastewater of the papermaking is discharged, and then dehydrated to make the water content of the saturated filtered adsorbent ⁇ 30%.
  • the dehydrated saturated filtered adsorbent is sent to a heating furnace, and is heated at a rate of 4'C to 6 ° C /min to 320 Torr. During this process, the moisture in the filtered adsorbent and a part of the low boiling organic matter are volatilized;
  • the flue gas is derived from the flue gas generated during the combustion of the fuel (coal, gas, natural gas, coke) of the heating device by filtering the adsorbent.
  • Example 2 The steam is produced and supplied by a steam boiler and is superheated steam.
  • Example 2 The steam is produced and supplied by a steam boiler and is superheated steam.
  • the saturated filtered adsorbent is discharged and dehydrated to make the water content of the saturated filtered adsorbent ⁇ 30%.
  • the dehydrated saturated filtered adsorbent is sent to a heating furnace, and is heated at a rate of 4 ° C to 6 ° C / min to 400 ° C. In the process, the moisture in the adsorbent and a part of the low boiling organic matter are filtered.
  • the flue gas is derived from the flue gas generated during the combustion of the fuel (coal, gas, natural gas, coke) of the heating device by filtering the adsorbent.
  • the steam is produced and supplied by a steam boiler and is saturated steam.
  • the saturated filtered adsorbent is discharged and dehydrated to make the water content of the saturated filtered adsorbent ⁇ 30%.
  • the dehydrated saturated filtered adsorbent is sent to a heating furnace, and is heated at a rate of 4 ° C to 6 ° C / min to 400 ° C. In the process, the moisture in the adsorbent and a part of the low boiling organic matter are filtered.
  • the flue gas is a flue gas generated during combustion of a fuel (coal, gas, natural gas) of a steam boiler that supplies steam in a filter adsorption preparation apparatus.
  • the experiment uses a filter adsorption unit (a wastewater treatment device invented by the company, patent number ZL 2004 1 0050470. 5 ).
  • the unit dimensions are 4 meters wide, 6 meters long and 4 meters high.
  • the unit has 6 units, each unit.
  • the upper box has a square structure, and the lower box has an inverted tapered structure.
  • the lower end of each unit of the tapered box has a discharge opening, and the discharge opening is provided with a sealing cover; the upper end of each unit square box is provided Feeding port, the feeding port is equipped with a sealing cover.
  • the lower part of each unit is equipped with a water inlet pipe, and the upper part is equipped with a water branch pipe.
  • the water inlet pipe of each unit is connected with the water inlet pipe of the unit, and the water outlet pipe of each unit It is connected with the outlet pipe of the unit, and the inlet pipe is connected with the water outlet of the pump.
  • 20 tons of filtered adsorbent was added from the feed port to each unit of the unit.
  • the water pump is started to transport the papermaking wastewater into each unit of the unit through the inlet pipe and the inlet pipe.
  • the wastewater passes through the filter adsorption material and enters the outlet pipe and the outlet pipe.
  • the flow rate was 20 tons / hour, and the raw water and the treated water were sampled 6-8 times a day, and the test results were recorded.
  • the filtered adsorbent in the unit is discharged from the discharge port at the lower part of the unit, and is regenerated by the method of the present invention, and then the regenerated filtered adsorbent is re-added to the unit, and the paper is processed according to the above procedure. Waste water. The average value recorded per day of the papermaking wastewater treated with the filtered adsorbent was compared to the average recorded daily using the recycled filter adsorbent to treat the papermaking wastewater.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

La présente invention concerne un procédé de régénération destiné à un matériau filtrant et adsorbant utilisé dans le traitement des eaux, ledit procédé comprenant les étapes suivantes: l'introduction du matériau filtrant et adsorbant ayant une teneur en eau < 30%, dans un four et le chauffage du matériau à 120~400°C à une vitesse d'échauffement de 4~6°C/minute; B) le chauffage en continu du matériau à 450~650°C à une vitesse d'échauffement de 6~8°C/minute, ce qui produit une distillation destructive et la carbonisation de l'organisme présent dans le matériau; C) le chauffage du matériau à 700°C à une vitesse d'échauffement de 8~10°C/minute, suivi par l'activation avec de la vapeur et des gaz de combustion, ladite température ne dépassant pas 850°C, la consommation de vapeur (saturée) étant de 0,5~1ton/ton de matériau filtrant et adsorbant, le rapport vapeur/gaz de combustion étant de 5:1 et le temps d'activation étant de 20~60 minutes. La valeur de sorption de l'iode du matériau régénéré au moyen du procédé selon l'invention peut revenir à son niveau initial avant l'utilisation et le traitement s'applique aux déchets industriels et aux usées urbaines afin de les faire revenir à leur niveau initial.
PCT/CN2007/002482 2006-08-17 2007-08-17 Procédé de régénération destiné à un matériau filtrant et adsorbant utilisé dans le traitement des eaux WO2008022562A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610111259.9 2006-08-17
CNB2006101112599A CN100562352C (zh) 2006-08-17 2006-08-17 一种用于水处理的过滤吸附料的再生方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9610563B2 (en) 2013-12-30 2017-04-04 Universidad De Santiago De Chile Method for activation and regeneration of a filter material and the filter material thus obtained
CN112044396A (zh) * 2020-08-25 2020-12-08 煤炭科学技术研究院有限公司 一种可原位再生的吸附剂及其制备方法和应用

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103663754A (zh) * 2012-09-26 2014-03-26 上海宝钢化工有限公司 一种水处理环糊精吸附剂再生方法
CN110745934A (zh) * 2019-10-22 2020-02-04 庆泓技术(上海)有限公司 一种改性的高活性无机纤维复合材料和制备及再生方法

Citations (10)

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JPS5626545A (en) * 1979-08-10 1981-03-14 Sumitomo Heavy Ind Ltd Reactivation of carbon adsorbent for desulfurization
US4268417A (en) * 1977-09-26 1981-05-19 American Minechem Corporation Method of making activated carbon
WO1982003619A1 (fr) * 1981-04-10 1982-10-28 Sasaki Yoshiki Dispositif de regeneration de charbon actif
CN85100619A (zh) * 1985-04-02 1985-12-20 中国市政工程西北设计院 活性炭强制放电再生技术及其装置
JPH05154379A (ja) * 1991-04-26 1993-06-22 Matsushita Electric Works Ltd 活性炭の加熱再生装置
RU2108968C1 (ru) * 1997-03-18 1998-04-20 Олег Гурьевич Алексеев Способ получения адсорбента
KR20020048171A (ko) * 2000-12-16 2002-06-22 함정웅 섬유상 활성탄 재생장치 및 그 재생방법
CN1381305A (zh) * 2001-04-16 2002-11-27 谢仁智 活性炭的再生方法
CN1413907A (zh) * 2001-10-26 2003-04-30 中国科学院山西煤炭化学研究所 一种活性焦的制备方法
CN1669917A (zh) * 2005-02-28 2005-09-21 昆明理工大学 一种物理法处理烟杆废弃物制活性炭的方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268417A (en) * 1977-09-26 1981-05-19 American Minechem Corporation Method of making activated carbon
JPS5626545A (en) * 1979-08-10 1981-03-14 Sumitomo Heavy Ind Ltd Reactivation of carbon adsorbent for desulfurization
WO1982003619A1 (fr) * 1981-04-10 1982-10-28 Sasaki Yoshiki Dispositif de regeneration de charbon actif
CN85100619A (zh) * 1985-04-02 1985-12-20 中国市政工程西北设计院 活性炭强制放电再生技术及其装置
JPH05154379A (ja) * 1991-04-26 1993-06-22 Matsushita Electric Works Ltd 活性炭の加熱再生装置
RU2108968C1 (ru) * 1997-03-18 1998-04-20 Олег Гурьевич Алексеев Способ получения адсорбента
KR20020048171A (ko) * 2000-12-16 2002-06-22 함정웅 섬유상 활성탄 재생장치 및 그 재생방법
CN1381305A (zh) * 2001-04-16 2002-11-27 谢仁智 活性炭的再生方法
CN1413907A (zh) * 2001-10-26 2003-04-30 中国科学院山西煤炭化学研究所 一种活性焦的制备方法
CN1669917A (zh) * 2005-02-28 2005-09-21 昆明理工大学 一种物理法处理烟杆废弃物制活性炭的方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9610563B2 (en) 2013-12-30 2017-04-04 Universidad De Santiago De Chile Method for activation and regeneration of a filter material and the filter material thus obtained
CN112044396A (zh) * 2020-08-25 2020-12-08 煤炭科学技术研究院有限公司 一种可原位再生的吸附剂及其制备方法和应用
CN112044396B (zh) * 2020-08-25 2023-06-09 煤炭科学技术研究院有限公司 一种可原位再生的吸附剂及其制备方法和应用

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CN100562352C (zh) 2009-11-25

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