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WO2008022562A1 - A regeneration method for filtering and adsorbing material used in water treatment - Google Patents

A regeneration method for filtering and adsorbing material used in water treatment 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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Prior art keywords
steam
flue gas
adsorbent
activation
saturated
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PCT/CN2007/002482
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English (en)
French (fr)
Inventor
Dawei Zhang
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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)

Description

一种用于水处理的过滤吸附料的再生方法
技术领域
本发明属于一种材料加工方法， 具体涉及一种用于处理工业废水、城市污水的过 滤吸附料的再生方法。 背景技术
目前大部分城市污水和工业废水（尤其是排放量大的工业废水）均釆用生化、 厌 氧、 好氧、 活性污泥、 加化学药剂等方法处理， 上述方法占地面积大， 耗电量高， 处 理过程中产生大量的污泥， 而且对高盐、 高酸、 COD含量高等难以生化的废水无法处 理。 目前用于水处理的固体吸附剂有多种， 如活性炭、 木炭、 膨润土、 硅藻土、 碳酸 钙、 矿渣、 焦粉、 炉渣等。 过滤吸附料经过一段时间使用后， 吸附了废水、 '污水中的 无机物和有机物， 这些污染物使过滤吸附料疏水， 占据过滤吸附料的活动晶格， 有机 物的不断积累使过滤吸附料的吸附能力逐步降低， 影响了过滤吸附料的性能， 继续使 用将造成处理后的水质超过规定的标准。 通过再生的方法可以使过滤吸附料恢复吸附 能力， 并且可以重复使用， 降低了水处理的费用。 发明内容
本发明的目的在于提供一种用于水处理的过滤吸附料的再生方法。
为实现上述目的， 本发明提供的再生方法， 其步骤如下-
A)将含水率<30%的饱和过滤吸附料输送到加热炉进行处理， 以 4°C〜6°C/分钟 速率升温， 升至 120~400°C， 优选升至 320〜400°C， 在此过程中， 使过滤吸附料孔中 的水分和一部分低沸点有机物挥发；
B) 继续以 6〜8°C/分钟的速率升温至 450〜650°C， 使物料中所含的高沸点有机 物产生裂解， 其中一部分挥发， 另一部分炭化；
C)再继续以 8〜10°C/分钟的速率升温至 70CTC时通入蒸汽和烟道气活化， 其中 温度不超过 850° (：， 所述蒸汽 (饱和)耗量为 0. 5吨〜 1吨 /吨过滤吸附料， 所述烟道气 与所述蒸汽的比例为 1： 5， 活化的时间为 20〜60分钟。
烟道气采用加热炉运行过程中燃料燃烧产生的热烟道气，活化温度、蒸汽（饱和） 耗量、 活化时间之间的关系在本发明所述的范围内表现为： 活化温度提髙， 消耗的蒸 汽量减少， 活化吋间缩短； 反之， 活化温度降低， 消耗的蒸汽量增加， 活化时间延长； 蒸汽量增加也可以使活化温度降低， 活化时间缩短。
在本发明的一个实施方案中， 所述含水率 <30%的饱和过滤吸附料是通过将饱和 过滤吸附料输送到脱水设备中进行脱水而获得的。
本发明进行再生的过滤吸附料， 是指釆用无烟煤、 贫煤、 痩煤、 焦煤、 肥煤、 气 煤、 长焰煤、 褐煤为原料， 也可采用煤加工产品如焦炭、 篮炭、 焦末为原料制备而成 的过滤吸附料， 经过粉碎、 筛选， 将粒径 <10mm的原料加温至 120〜150°C进行干燥处 理； 然后以 4〜6°C/分钟速率升温至 350〜400°C ; 继续以 6〜8°C/分钟的速率升温至 510〜650°C， 恒温 40~70分钟， 使原料干镏和炭化； 再继续以 6〜10°C/分钟的速率 升温至 70CTC时通入蒸汽和烟道气进行活化反应，其中蒸汽 (饱和)耗量为 0. 5吨〜 3吨 /吨煤， 所述烟道气与所述蒸汽的比例为 1： 5或 0; 活化的时间为 20〜60分钟， 活化 温度为 70(TC ~85(TC。
根据公知的测定方法测得， 该过滤吸附料的主要数据与参数：
亚甲基蓝吸附值： 30〜85mg/g
灰分： 8〜15%
充填密度： 200〜550g/l
碘值吸附值： 260〜720mg/g
比表面积： 200~490m7g
过滤吸附料收率： 400kg〜600kg/吨煤
化学需氧量 （COD) 吸附量： 200〜3， 000mg/g。
饱和过滤吸附料经过本发明方法再生之后， 其碘值吸附值恢复到使用前的水平， 并且对工业废水、 城市污水进行处理的效果也恢复到使用前的水平。 具体实施方式
将水处理装置中饱和过滤吸附料排出后进行脱水， 使饱和过滤吸附料的含水率 < 2
30%。 将经过脱水处理的饱和过滤吸附料输送到加热设备中， 以 4°C〜6°C/分钟速率升 温， 升至 120〜400°C， 优选升至 320〜400Ό， 在此过程中， 过滤吸附料中的水分和一 部分低沸点有机物挥发；
继续以 6〜8°C/分钟的速率升温至 450〜650°C , 物料中所含的髙沸点有机物产生 裂解， 其中一部分挥发， 另一部分炭化；
再继续以 8〜10Ό/分钟速率升温至 700Ό时通入蒸汽和烟道气活化， 其中， 温度 不超过 850°C， 所述蒸汽 (饱和)耗量为 0. 5吨〜 1吨 /吨过滤吸附料， 所述烟道气与所 述蒸汽的比例为 1： 5， 活化的时间为 20〜60分钟。
在本发明的又一个实施方案中， 所述烟道气和蒸汽为同时通入。
在本发明的又一个实施方案中， 所述烟道气和蒸汽为不同时通入， 即， 升温至 700°C时先通入蒸汽活化， 5-10分钟之后， 通入烟道气活化。
在本发明的另一个实施方案中， 所述蒸汽为水蒸汽。
所述烟道气主要成分为二氧化碳、 一氧化碳、 二氧化硫、 氮气和水蒸汽， 烟道气 主要来自过滤吸附料制备加热设备如加热炉中的燃料 （煤、 煤气、 天然气、 焦炭）燃 烧过程中所产生的烟道气， 也可以是向过滤吸附料制备设备内提供蒸汽的蒸汽锅炉的 燃料 （煤、 煤气、 天然气）燃烧过程中所产生的烟道气。
所述蒸汽是由蒸汽锅炉生产和提供的， 可以是饱和蒸汽， 也可以是过热蒸汽， 以 过热蒸汽为佳， 过热蒸汽可以减少蒸汽进入过滤吸附料再生设备后吸收的热量， 保持 再生设备内的温度。
本发明用于再生饱和过滤吸附料的设备可以为公知设备， 基本为： 脱水设备、输 送设备、 蒸汽锅炉以及可以加温到干燥、 千馏、 炭化和活化温度的加热设备。 其中的 脱水设备 （例如离心式脱水机）是用于将饱和过滤吸附料进行脱水； 输送设备是将经 过脱水出理后的饱和过滤吸附料送至加热炉内； 蒸汽锅炉是用来产生蒸气以对经过干 燥、 干馏、 炭化的过滤吸附料进行活化； 加热设备是带有升温控制的用于对饱和过滤 吸附料进行干燥、 干馏、 炭化以及活化的普通加热装置。 进行干燥、 干熘、 炭化以及 活化操作的较理想的设备可以采用申请号为 200410100439. 8 (公开号 CN1660964)提供 的 "回转式半焦过滤加工机组" 。 使用该机组的对过滤吸附料进行再生时， 可以实现 自动化连续生产， 从而提高生产效率。 根据该专利申请公开的资料， 下面简述该机组 的结构的工作原理。 需要说明的是， 本发明采用何种设备没有严格的限定， 只要能满 足脱水以及达到要求的千燥和干馏炭化温度即可。 之所以在这里对该机组作一简述， 是希望有助于本领域技术人员进一步了解本发明实质技术内容， 从而进行实施。 该回 转式半焦过滤加工机组滚筒为双筒结构， 由内筒和外筒构成， 采用耐热合金钢制作， 内筒直径为 900- 4, 000mm, 外筒直径为 1, 500-5, 200醒， 滚筒长径比为 12 : 1; 在滚筒 外部不同部位分别设有齿圈、 加强圈、 滚圈、 滑动密封装置； 内筒和外筒之间的夹层 为燃气加热腔； 内筒为煤料焦化室； 焦化室分为干燥段和干馏段； 采用回转式半焦过 滤材料加工机组再生过滤吸附料时， 机组内筒增加了活化段。 机组的滚筒倾斜放置， 坐落在两个托辊总成上，由传动装置通过滚筒上的齿圈驱动，滚筒的转速为每分钟 3-5 转； 滚筒上安装有测温系统， 用于监测滚筒各段的温度； 滚筒的外筒一端与燃烧室相 联接， 另一端与烟道气收集室相联接； 滚筒的内筒一端与上密封室相联接， 另一端与 下密封室相联接； 联接部位均有滑动密封装置， 密封装置结构为活塞环式、 迷宫式或 蒸气式； 烟道气排放装置与烟道气收集室之间安装有换热器， 用于回收由燃气加热腔 经烟道气收集室排出的烟道气中的余热。 烟道气排放装置、 烟道气收集室和换热器之 间由管道连接。 上密封室安装有螺旋给料机、 密封加煤箱、 储煤仓， 还安装有旋风分 离器、 煤气净化装置和煤气系统； 机组燃烧室安装有点火装置， 机组釆用煤气发生炉 提供的煤气点火； 点火时加热速度为 4O/min。 机组的外部为隔热保温层， 滚筒部位 的隔热保温材料釆用硅酸铝纤维毡，外包钢板制作的保护壳，其他部位根据表面温度， 采用普通隔热保温材料。
在本发明的参数中， 碘值吸附值是本发明过滤吸附料的主要参数，可以采用以下 方法测定-
( 1 )将过滤吸附料粉碎至 200目粉末， 每个三角瓶内装入 0. 5g过滤吸附料， 加 50毫升碘液， 振荡 15分钟， 静止 3分钟， 倒入过滤瓶（三角瓶上加滤纸）。滤出原 液。
(2)另外取三角瓶， 加入 50ml蒸馏水， 取 10ml原液加入三角瓶中摇匀。
( 3)用硫代硫酸钠滴定， 待三角瓶中的液体变成淡黄色时， 加入指示剂后变成 黑色， 再滴硫代硫酸钠直至无色为止， 记下加入的硫代硫酸钠数量。
(4)碘吸附值计算公式：
5 (VC1—VC2) X 127
N=
0. 5
V,—硫代硫酸钠的浓度
d—硫代硫酸钠的耗量 V2碘浓度（0. 1 )
C2— 10
5、 127—常数
0. 5—过滤吸附料重量
下面将通过实施例对本发明进行更加详细的描述，但是本发明决不是限制于这些 实施例。 在不背离本发明的精神和范围的情况下， 本发明可以进行各种修改、 改进、 替换等。
实施例 1
将处理造纸中段废水后的饱和过滤吸附料排出后进行脱水，使饱和过滤吸附料的 含水率 <30%。 将经过脱水处理的饱和过滤吸附料输送到加热炉中， 以 4'C〜6°C /分钟 速率升温， 升至 320Ό , 在此过程中， 过滤吸附料中的水分和一部分低沸点有机物挥 发；
继续以 6〜8Ό/分钟的速率升温至 650°C， 使物料中所含的髙沸点有机物产生裂 解， 其中一部分挥发， 另一部分炭化；
再继续以 8〜10°C/分钟的速率升温至 700Ό时通入蒸汽和烟道气活化，其中温度 不超过 700°C， 蒸汽 (饱和)耗量为 1吨 /吨过滤吸附料， 蒸汽与烟道气的比例为 5 : 1， 活化的时间为 60分钟。
所述烟道气来自过滤吸附料制备加热设备的燃料 （煤、 煤气、 天然气、 焦炭） 燃烧过程中所产生的烟气。
所述蒸汽是由蒸汽锅炉生产和提供的， 并且是过热蒸汽。 实施例 2
将处理造纸中段废水后饱和过滤吸附料排出后进行脱水，使饱和过滤吸附料的含 水率 <30%。 将经过脱水处理的饱和过滤吸附料输送到加热炉中， 以 4°C〜6°C/分钟速 率升温， 升至 400°C， 在此过程中， 过滤吸附料中的水分和一部分低沸点有机物挥发； 继续以 6〜8Ό/分钟的速率升温至 550°C， 使物料中所含的高沸点有机物产生分 解， 其中一部分挥发， 另一部分炭化； 再继续以 8〜10°C/分钟的速率升温至 700Ό时通入蒸汽和烟道气活化，其中温度 不超过 820Ό，蒸汽 (饱和)耗量为 0. 8吨 /吨过滤吸附料，蒸汽与烟道气的比例为 5： 1， 活化的时间为 30分钟。
所述烟道气来自过滤吸附料制备加热设备的燃料（煤、 煤气、 天然气、 焦炭）燃 烧过程中所产生的烟气。
所述蒸汽是由蒸汽锅炉生产和提供的， 并且是饱和蒸汽。
实施例 3
将处理造纸中段废水后饱和过滤吸附料排出后进行脱水，使饱和过滤吸附料的含 水率 <30%。 将经过脱水处理的饱和过滤吸附料输送到加热炉中， 以 4°C〜6°C/分钟速 率升温， 升至 400°C， 在此过程中， 过滤吸附料中的水分和一部分低沸点有机物挥发; 继续以 6〜8°C/分钟的速率升温至 650°C， 使物料中所含的高沸点有机物产生分 解， 其中一部分挥发， 另一部分炭化； 再继续以 8〜10'C/分钟的速率升温至 70CTC时， 先通入水蒸汽活化， 其中所述水 蒸汽 (饱和)耗量为 0.5吨 /吨过滤吸附料， 5分钟之后通入烟道气活化，所述烟道气与所 述水蒸汽的比例为 1： 5， 其中温度不超过 850°C,活化的时间为 20分钟。
所述烟道气是向过滤吸附料制备设备内提供蒸汽的蒸汽锅炉的燃料（煤、 煤气、 天然气）燃烧过程中所产生的烟道气。
附表 1、
将同一批过滤吸附料， 未使用过滤吸附料处理废水前对其进行化验， 使用其处 理废水后再进行化验， 将处理废水后的该批过滤吸附料再生后再进行化验， 然后将化 验结果进行比较。
过滤吸附料再生前后碘吸附值比较表:
Figure imgf000008_0001
通过上表可以看出， 过滤吸附料通过上述方法再生后， 代表其吸附能力的碘吸附 值恢复到使用前的水平。 可以重新用于处理废水。 附表 2、
过滤吸附料再生前后进行造纸废水深处理效果比较表
Figure imgf000009_0001
通过上表可以看出， 过滤吸附料通过上述方法再生后， 其对造纸废水进行深处理 的效果恢复到使用前的水平。
实验采用过滤吸附机组 （本人发明的一种废水处理装置， 专利号 ZL 2004 1 0050470. 5 ) , 机组外形尺寸为宽 4米， 长 6米， 高 4米， 机组有 6个单元， 每个单元 的上部箱体为方形结构， 下部箱体为倒锥形结构， 每个单元锥形箱体的下端设有出料 口， 出料口安装有密封盖； 每个单元方形箱体的上端设有加料口， 加料口安装有密封 盖， 每两个单元的下部安装有进水支管， 上部安装有出水支管， 每个单元的进水支管 与机组的进水干管连接， 每个单元的出水支管与机组的出水干管连接， 进水干管与水 泵的出水口连接。将 20吨过滤吸附料由加料口加入到机组的每个单元内。启动水泵将 造纸废水通过进水干管、 进水支管输送到机组的每个单元内， 废水穿过过滤吸附料， 进入出水支管、出水干管流出。流量为 20吨 /小时，每天对原水和处理后的水取样 6-8 次进行化验， 并将化验结果记录下来。
在机组运行 10天后，将机组中的过滤吸附料由机组下部的出料口排出，采用本发 明的方法进行再生， 然后将再生后的过滤吸附料重新加入到机组中， 按照上面的程序 处理造纸废水。 将使用过滤吸附料处理造纸废水每天记录的平均值与使用再生后的过滤吸附料处 理造纸废水每天记录的平均值进行比较。

Claims

1、 一种用于水处理的过滤吸附料的再生方法， 其步骤如下：
A)将含水率<30%的饱和过滤吸附料输送到加热炉进行处理， 以 4〜6°C/分钟速 率升温， 升至 120〜400Ό， 使过滤吸附料中的水分和一部分低沸点有机物挥发；
Β) 继续以 6〜8°C/分钟的速率升温至 450〜650°C， 使物料中所含的高沸点有机 物产生裂解， 其中一部分挥发， 另一部分炭化；
权
C) 再继续以 8〜10°C/分钟的速率升温至 700Ό时通入蒸气和烟道气中的两种或 一种活化， 其中， 所述温度不超过 850°C， 所述蒸汽 (饱和)耗量为 0. 5吨〜 1吨 /吨过 滤吸附料， 所述烟道气与所述蒸汽的比例为 1： 5， 活化的时间为 20-60分钟。
求
2、如权利要求 1所述的再生方法，其中在步骤 B)中，将温度升高至 320〜400°C。
3.如权利要求 1或 2所述的再生方法，所述当温度升至 7(XTC时通入蒸气和烟道 气中的两种或一种活化包括： 先通入蒸汽活化， 之后再通入烟道气活化的情况。
4.如权利要求 1或 2所述的再生方法，所述当温度升至 700Ό时通入蒸气和烟道 气中的两种或一种活化包括： 先通入蒸汽活化， 之后再同时通入蒸汽和烟道气活化的 情况。
5.如权利要求 1或 2所述的再生方法，所述当温度升至 700°C时通入蒸气和烟道 气中的两种或一种活化包括： 同时通入蒸汽和烟道气以进行活化的情况。
6. 如权利要求 1所述的再生方法， 其中所述蒸汽是由蒸汽锅炉生产和提供的， 其为饱和蒸汽或过热蒸汽。
7. 如权利要求 1或 2所述的再生方法， 所述蒸汽为水蒸汽。
8. 如权利要求 1所述的再生方法， 所述烟道气主要成分为二氧化碳、—一氧化碳、 二氧化硫、 氮气和水蒸汽， 并且所述烟道气主要来自过滤吸附料的加热设备的燃料燃 烧过程中所产生的烟道气， 也可以是向过滤吸附料制备设备内提供蒸汽的蒸汽锅炉的 燃料燃烧过程中所产生的烟道气。
9、 如权利要求 1 所述的再生方法， 其中所述含水率<30%的饱和过滤吸附料是 通过将饱和过滤吸附料输送到脱水设备中进行脱水而获得的。
10、 如权利要求 1所述的再生方法， 其中饱和过滤吸附料为采用无烟煤、 贫煤、 瘦煤、 焦煤、 肥煤、 气煤、 长焰煤、 褐煤、 焦炭、 篮炭或 /和焦末为原料制备而成的、 用于水处理后的过滤吸附料。
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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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