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WO2008022561A1 - Matériau de filtration et d'adsorption utilisé dans le traitement des eaux, procédé de préparation de ce dernier - Google Patents

Matériau de filtration et d'adsorption utilisé dans le traitement des eaux, procédé de préparation de ce dernier Download PDF

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Publication number
WO2008022561A1
WO2008022561A1 PCT/CN2007/002481 CN2007002481W WO2008022561A1 WO 2008022561 A1 WO2008022561 A1 WO 2008022561A1 CN 2007002481 W CN2007002481 W CN 2007002481W WO 2008022561 A1 WO2008022561 A1 WO 2008022561A1
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Prior art keywords
steam
flue gas
temperature
coal
adsorbent
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Chinese (zh)
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Dawei Zhang
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    • 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
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • B01J20/3021—Milling, crushing or grinding
    • 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
    • B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing

Definitions

  • the invention relates to a material and a processing method thereof, in particular to a semi-coke filter adsorbent for treating industrial waste water, urban sewage, and a preparation method for processing coal into the semi-coke filter adsorbent.
  • the invention solves the prior art method for treating urban sewage and industrial wastewater, has large land occupation, high power consumption, generates a large amount of sludge during the treatment process, and is difficult to biochemically high in high salt, high acid and high COD content.
  • the problem that the wastewater can not be treated and the solid adsorbent currently used for water treatment have high production cost, small specific surface area and low adsorption capacity, especially when used for urban sewage and industrial wastewater treatment with large discharge amount and high concentration of pollutants, or It is carried out with a high processing cost or a large amount of adsorbent or frequent replacement.
  • the inventors have intensively studied and invented a filter adsorbent to achieve the above object.
  • the filter adsorbent of the invention is low in production cost and can be widely used for water treatment, in particular, large discharge, Urban sewage and industrial wastewater with high pollutant concentration reduce the floor space and power consumption of urban sewage and industrial wastewater facilities.
  • the wastewater treatment cost is lower than the biochemical treatment cost and can deal with high salt, high acid and high COD.
  • Semi-coke filter adsorption material for wastewater is lower than the biochemical treatment cost and can deal with high salt, high acid and high COD.
  • Semi-coke filter adsorption material for wastewater is lower than the biochemical treatment cost and can deal with high salt, high acid and high COD.
  • Semi-coke filter adsorption material for wastewater is lower than the biochemical treatment cost and can deal with high salt, high acid and high COD.
  • Semi-coke filter adsorption material for wastewater is lower than the biochemical treatment cost and can deal with high salt, high acid and high COD.
  • Semi-coke filter adsorption material for wastewater is lower than the biochemical treatment cost and can
  • the present invention provides a filter adsorbent for water treatment, which is a semi-coke filter adsorbent whose main parameters are as follows:
  • Iodine adsorption value 260 ⁇ 720mg/g
  • the present invention provides a method for preparing the filtered adsorbent, which comprises heating the treated raw material to 120 ⁇ 150'C, drying the raw material; and then 4' C ⁇ 6 / min rate to 350 ⁇ 400 ° C; continue to increase the temperature to 6 ⁇ 8 ° C / min to 510 ⁇ 650 ⁇ , constant temperature 40 ⁇ 70 minutes, the raw materials are carbonized and carbonized; continue to 6 ⁇ 10' C.
  • the steam (saturation) consumption is 0. 51.
  • the rate of C / min is increased to 800 ⁇ 950 'C, and the activation reaction is carried out by introducing one or two of steam and flue gas when the temperature reaches 80 CTC, wherein the steam (saturation) consumption is 0.51.
  • the steam (saturation) consumption is 0.51.
  • ⁇ 3 tons / ton of raw materials the ratio of the flue gas to the steam is 1: 5 or 0, the activation time is 20 to 60 minutes, and the activation temperature is 800.
  • the treated raw material includes a coalaceous raw material having a particle diameter of less than 10 mm obtained by crushing and screening.
  • the raw materials for preparing the filter adsorbent according to the invention may be anthracite, lean coal, lean coal, coking coal, fat coal, gas coal, long flame coal, lignite as raw materials, or coal processing products such as coke, basket carbon and coke as raw materials. . detailed description
  • the filter adsorbent of the present invention is a semi-coke filter adsorbent for water treatment, and a solid adsorbent currently used for water treatment such as activated carbon, charcoal, bentonite, diatomaceous earth, calcium carbonate, slag, coke powder, slag Compared to its main parameters are as follows: Methylene blue adsorption value: 30 ⁇ 85mg/g
  • Iodine adsorption value 260 ⁇ 720mg/g
  • Chemical oxygen demand (COD) Adsorption capacity 200 ⁇ 3, 000mg/g.
  • the semi-coke is mainly controlled by the processing temperature (heating), which can be observed with the naked eye.
  • the use of semi-coke activation is mainly for the purpose of obtaining large pores and mesopores of the filter adsorbent, which is suitable for industrial wastewater and urban sewage treatment.
  • the semi-coke filter adsorbent of the invention has large specific surface area and strong adsorption capacity, and is suitable for treating waste water such as chloric acid washing wastewater, coking wastewater, papermaking wastewater, urban sewage and the like. Since the adsorbent of the present invention uses various coals which are inexpensive and easily available as a raw material, it is inexpensive to use for treating urban sewage and industrial wastewater, and the adsorbent of the present invention can also be used for high treatment. Salt, high acid, high COD content and other difficult to biochemical wastewater.
  • the semi-coke filter adsorbent of the present invention may be prepared by a method comprising the steps of: heating the treated raw material to 120 to 150 ° C, drying the raw material; and then raising the temperature at a rate of 4 ⁇ 6 to 6 ° C/min. To 350 ° C ⁇ 400 ° C ; continue to increase the temperature to 510 ° C ⁇ 650 ° C at a rate of 6 ° C ⁇ 8 ° C / min, constant temperature 40 ⁇ 70 minutes, the raw materials are carbonized and carbonized; continue to 6 ⁇ 10 °
  • the rate of C/min is raised to 800 ⁇ 950'C.
  • steam and flue gas are introduced to activate the reaction.
  • the steam (saturation) consumption is lt ⁇ 3 tons/ton of raw materials, flue gas and
  • the ratio of steam is 1:5 or 0, the activation time is 20 to 60 minutes, and the activation temperature is 800 to 950 'C.
  • the main components of the flue gas are carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen and water vapor.
  • the flue gas mainly comes from the flue gas generated during the combustion process of the fuel (coal, gas, natural gas, coke) for filtering the adsorbent preparation heating device, or the steam boiler for supplying steam to the filter adsorbent preparation device ( Coal, gas, natural gas)
  • the flue gas produced during the combustion process is carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen and water vapor.
  • 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 adsorption preparation device, and maintain the inside of the preparation 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 adsorption preparation device, and maintain the inside of the preparation equipment. temperature.
  • no flue gas is introduced, i.e., the method includes activation using only steam.
  • the steam and flue gas are simultaneously introduced.
  • the steam and the flue gas are not simultaneously introduced, that is, the temperature is raised to
  • steam is first activated, and after 5-10 minutes, it is activated by flue gas.
  • the steam and the flue gas are not simultaneously introduced, that is, when the temperature is raised to 800 ° C, the steam is first activated, and after 5-10 minutes, the steam and the smoke are simultaneously introduced. The gas is activated.
  • the steam is water vapor.
  • the treated raw material includes a coalaceous raw material having a particle diameter of less than 10 mm obtained by crushing and screening.
  • the raw materials for preparing the filter adsorbent of the present invention may be anthracite, lean coal, lean coal, coking coal, fat coal, gas coal, long flame coal, lignite as raw materials, or coal processing products such as coke, basket carbon, and coke. raw material.
  • coal is selected as a raw material for filtering the adsorbent.
  • the suitable raw materials are selected, and then, among various suitable raw materials, one is selected.
  • the raw material for making the lowest cost of filtering adsorbent is selected.
  • the composition, activity and yield of the filtered adsorbent prepared are compared.
  • coal with low metamorphism has high volatile matter, low ash content and high activity, and can obtain a filter material with a higher specific surface area at a lower activation temperature, but the yield of the filter adsorbent is low;
  • the coal has low volatile content, high ash content and poor reaction activity.
  • the obtained adsorbent has a lower specific surface area, but the yield of the filtered adsorbent is relatively high.
  • Anthracite, lean coal, lean coal, coking coal, fat coal, gas coal, long flame coal, lignite can be used as raw materials, and coal processing products such as coke, basket charcoal and coke may be used as raw materials.
  • the apparatus for preparing a filter adsorbent of the present invention may be a well-known apparatus, basically: a crushing apparatus, a screening apparatus, a conveying apparatus, a steam boiler, and a heating furnace which can be heated to a drying and carbonization temperature.
  • the crushing device is used for crushing the raw materials;
  • the screening device is used for screening the crushed raw materials;
  • the conveying device is to send the filtered raw materials to the heating furnace;
  • the steam boiler is used for generating steam to carry out the raw materials.
  • the furnace is a conventional heating device with drying control for drying and charring the raw materials.
  • the ideal equipment can be used in the "rotary semi-coke filter processing unit" provided by the application number 200410100439. 8 (publication number CN1660964).
  • the filter When the filter is used to prepare the filter adsorbent, the generated dust and flue gas which are unfavorable to the environment can be effectively recovered, and automatic continuous production can be realized, thereby improving production efficiency.
  • the working principle of the structure of the unit will be briefly described below. It should be noted that the equipment used in the present invention is not strictly limited as long as it can satisfy the pulverization, screening, and the required drying and carbonization carbonization temperatures. The reason why the unit is briefly described herein is to facilitate the understanding of the preparation method of the present invention by those skilled in the art and to carry out the implementation.
  • the rotary semi-coke filter processing unit drum has a double-tube structure, consisting of an inner cylinder and an outer cylinder, and is made of heat-resistant alloy steel, the inner cylinder diameter is 900-4, 000 mm, and the outer cylinder diameter is 1,500-5,200 mm.
  • 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 tube and the outer tube is a gas heating chamber; the inner tube is coal material coking
  • the coking chamber is divided into a drying section and a dry distillation section; when the rotary adsorbing material is prepared by the rotary semi-coke filter material processing unit, the activation section is added to the inner cylinder of the unit.
  • 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 1-3 revolutions per minute.
  • the temperature measurement system is installed on the drum for monitoring the drum.
  • the flue gas discharge device, the flue gas collection chamber and the heat exchanger are connected by a pipe.
  • the earth seal chamber is equipped with a screw feeder, a sealed coal supply box, a coal storage tank, and a cyclone separator, a gas purification device and a gas system;
  • the ignition chamber of the unit is equipped with an ignition device, and the unit is equipped with a gas ignition provided by the gas generator. ;
  • the heating rate during ignition is 4'C/min.
  • the outside of the unit is insulated and insulated.
  • the insulation material of the drum part is made of aluminum silicate fiber felt, and the protective shell made of steel plate is wrapped.
  • the other parts are made of ordinary heat insulation materials according to the surface temperature.
  • the selected raw materials are crushed by a crushing device, sieved by a screening device to prepare a raw material having a particle size of ⁇ 10111111, and the processed raw materials are sent from a conveying device to a heating furnace for drying and dry distillation and carbonization.
  • the drying temperature is 120 ⁇ 150°C .
  • the temperature is raised to 350 ⁇ 400 ⁇ at a rate of 4 ⁇ 6'C/min, and the temperature is raised to 510 at a rate of 6 ⁇ 8°C/min.
  • the material in the unit is carbonized and carbonized; continue to heat up to 800 ⁇ 950'C at a rate of 6 ⁇ 10 °C/min, and steam at a temperature of 80 (TC)
  • the activation reaction is carried out, the steam (saturation) consumption is 11 to 3 tons / ton of raw materials, the ratio of flue gas to steam is 1: 5 or 0, and the activation time is 20 to 60 minutes.
  • the main parameters of the filter adsorbent prepared by the present invention are as follows - methylene blue adsorption value: 30 ⁇ 85 mg / g
  • Iodine adsorption value 260 ⁇ 720mg/g
  • the iodine value adsorption value is the main parameter of the filter adsorbent of the present invention, and can be measured by the following method.
  • the filter adsorbent was pulverized to 200 mesh, 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 raw material for preparing the filter adsorbent is long flame coal (Shenmu bituminous coal).
  • Long flame coal Shenmu bituminous coal
  • Long-flame coal (Shenmu bituminous coal) is crushed by crushing equipment and sieved by screening equipment to produce raw materials with a particle size of ⁇ 10 m .
  • the processed material was warmed to 120 ⁇ 150'C and then heated to 400'C at a rate of 4'C/min.
  • the raw materials are carbonized and carbonized; continue to increase the temperature to 860 ° C at a rate of 6-10 ° C / min, when the temperature rises to At 800 °C
  • steam activation is carried out first, and after 10 minutes, it is activated by flue gas.
  • the water vapor (saturation) consumption is 3 tons/ton of coal, and the ratio of flue gas to steam is 1:5.
  • the activation time is 50 minutes, and the reaction activation temperature is 800-860 °C.
  • the flue gas is flue gas generated mainly from the combustion of fuel (gas, natural gas) in the preparation of a filter sorbent device (for example, a rotary semi-coke filter sorbent processing unit).
  • Table 1 shows the treatment of the chloric acid washing wastewater in the pharmaceutical factory by the filtration adsorbent prepared in Example 1, and the CODcr (saturation) experiment was removed.
  • the experiment used a container with a diameter of 100mm, a height of 300 ⁇ and a volume of 650ml.
  • the upper part of the container is a water inlet, the lower part has a water outlet of 5mm in diameter, and the water outlet is covered by a 30-mesh metal or nylon mesh.
  • the filter adsorption material is ground and sieved. 300 g of filter adsorbent with a diameter of less than 3 mm is placed in the container, and the amount of water added to the container is added to the container from the water inlet of the container (C0D205, 000mg/l).
  • the filtered adsorbent prepared by the method has a high filtration adsorption rate, and the filtration adsorption rate of the chemical oxygen demand (CODcr) in the pharmaceutical wastewater reaches 3.69 g/g, which can be used for Handle pharmaceutical wastewater.
  • CODcr chemical oxygen demand
  • Table 2 is a process for treating papermaking wastewater by using the filter adsorbent prepared in Example 1, and removing (CODcr) (saturation) experiment. It can be seen from Table 2 that the filter adsorbent prepared by the method has a high filtration adsorption rate, and is suitable for papermaking.
  • the chemical oxygen demand (CODcr) in the wastewater has a filtration adsorption rate of 0. 348 g / g, which can be used to treat papermaking wastewater.
  • the experiment uses a container with a diameter of 100 mm, a height of 300 mm and a volume of 650 ml.
  • the upper part of the container is a water inlet
  • the lower part has a water outlet of 5 mm in diameter
  • the water outlet is covered by a 30-mesh metal or nylon mesh.
  • the filtered adsorbent is ground and sieved to size. 250 grams of filter adsorbent less than 3 is put into the container, and the measuring cup is used to add papermaking wastewater from the water inlet of the container to the container, and the number of times of water addition, C0D content and water volume are recorded, and all the water to be added is added.
  • the raw material for preparing the filter adsorbent is (Jincheng) anthracite.
  • (Jincheng) anthracite has low volatile matter, high ash content and low reaction activity. Therefore, compared with Changyan coal (Shenmu bituminous coal), the activation reaction temperature is high, and the filtered adsorbent has a lower specific surface area, but the filtered adsorbent yield is high.
  • the (Jincheng) anthracite coal is crushed by crushing equipment and sieved by screening equipment to produce raw materials with a particle size of ⁇ 10.
  • the processed material is transferred to a drying, drying and carbonization apparatus for drying and charring.
  • the drying temperature was 150 ° C, and after the raw materials were dried, the temperature was raised to 350 ° C at a rate of 4 to 6 C/min.
  • 'C is steam and flue gas activated, steam (saturation) consumption is 1 ton / ton of coal, the ratio of flue gas to steam is 1: 5, activation time is 20 minutes, activation temperature is 800 ⁇ 950 °C.
  • the flue gas is flue gas produced during combustion of fuel (coal, gas, natural gas) mainly from a steam boiler that supplies steam for the filtration of adsorbent equipment.
  • the steam is produced and supplied by a steam boiler and is superheated steam.
  • Table 3 is the experimental record of treating the paper mill wastewater by using the filter adsorbent prepared in Example 2. It can be seen from Table 3 that the chemical oxygen demand (CODcr) in the wastewater is removed when the filter adsorbent prepared by the method is used to treat the papermaking wastewater. The average of the 5-day rate is 93%. Can be used to treat papermaking wastewater.
  • CODcr chemical oxygen demand
  • the experiment uses a filter adsorption unit (a wastewater treatment device invented by the company, patent number ZL 2004 1 0050470. 5).
  • the unit is 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 Connected to the mains of the unit, the mains and water
  • the water outlet of the pump is connected.
  • 20 tons of filtered adsorbent was added from the feed port to each unit of the unit.
  • the start-up water pump transports the papermaking wastewater into each unit of the unit through the influent main pipe and the influent branch pipe, and the waste water passes through the filtered adsorbent, and enters the outlet branch pipe and the outlet pipe.
  • the flow rate was 20 tons/hour, and the water sample was taken twice a day for testing, and the test results were recorded.
  • the (Jincheng) anthracite coal is crushed by crushing equipment and sieved by screening equipment to produce raw materials with a particle size of ⁇ 10nun.
  • the processed raw materials are conveyed to a drying and carbonization carbonization apparatus for drying and carbonization.
  • the drying temperature was 135 ° C, and after the raw materials were dried, the temperature was raised to 380 ° C at a rate of 4 to 6 C/min.
  • the flue gas is flue gas generated during combustion of fuel (gas, natural gas) mainly from equipment for preparing a filter adsorbent (for example, a rotary semi-coke filter adsorbent processing unit).
  • the steam is produced and supplied by a steam boiler and is superheated steam.
  • Iodine adsorption value 260mg/g
  • the raw material for preparing the semi-coke filter adsorbent is long flame coal (Shenmu bituminous coal).
  • Long flame coal Shenmu bituminous coal
  • Long-flame coal (Shenmu bituminous coal) is crushed by crushing equipment and sieved by screening equipment to produce raw materials with a particle size of ⁇ 10.
  • the processed raw materials are conveyed to a drying and carbonization carbonization apparatus for drying and carbonization. Drying temperature is
  • the material was dried and heated to 400 ° C at a rate of 4 to 6 ° C / min.
  • the steam is produced and supplied by a steam boiler and is saturated steam.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
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Abstract

La présente invention concerne un matériau de filtration et d'adsorption utilisé dans le traitement des eaux et la préparation de ce dernier. Les paramètres principaux du matériau de filtration et d'adsorption sont les suivants: une valeur d'adsorption par le bleu de méthylène comprise entre 30~85mg/g; des cendres représentant 8~15%; une densité à l'état conditionné comprise entre 200~550g/l; une valeur d'adsorption d'iode comprise entre 260~720 mg/g; une surface active comprise entre 200~600m2/g; une demande chimique en oxyde (DCO) comprise entre 200~3000 mg/g. La préparation consiste: à chauffer les matériaux bruts à une température de 120-150 °C; à élever la température à 350-400 °C à une vitesse de 4-6°C/min pour déshydrater les matériaux bruts; à élever la température à 510-650°C à une vitesse de 6-8°C/min et à maintenir la température pendant 40-70min pour distiller et saturer les matériaux bruts; à élever la température à 800-950°C à une vitesse de 6-10°C/min et à introduire de la vapeur et/ou un gaz de combustion lorsque la température atteint 800°C et à maintenir la température d'activation entre 800-950°C pendant 20-60min pour activer les matériaux; la consommation de vapeur saturée étant de 0,5 -3 ton/ton de matériaux bruts, le rapport gaz de combustion-vapeur étant de 1:5 ou égal à 0.
PCT/CN2007/002481 2006-08-17 2007-08-17 Matériau de filtration et d'adsorption utilisé dans le traitement des eaux, procédé de préparation de ce dernier Ceased WO2008022561A1 (fr)

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CN200610111260.1 2006-08-17
CN 200610111260 CN101125292A (zh) 2006-08-17 2006-08-17 一种用于水处理的过滤吸附料制备方法

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CN110563070A (zh) * 2019-08-20 2019-12-13 天津机科环保科技有限公司 生物焦制备及使用方法和装置
CN115947471A (zh) * 2022-11-01 2023-04-11 伊沃环境科技(南京)有限公司 一种兰炭废水达标回用的处理工艺

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CN102641622B (zh) * 2012-04-25 2014-07-09 天津泰达园林建设有限公司 一种排水暗管外包滤料及其制备、使用方法
CN103007883B (zh) * 2012-12-13 2014-12-24 武汉钢铁(集团)公司 一种钢铁工业废水除铁剂及其制备方法
CN106495262A (zh) * 2016-10-12 2017-03-15 北京宝塔三聚能源科技有限公司 一种煤气化废水的回收利用工艺及系统
CN109179404A (zh) * 2018-09-12 2019-01-11 宁夏宝塔石化煤化工研究院有限公司 一种利用长焰煤制备中大孔活性炭的方法
CN112779041A (zh) * 2021-01-20 2021-05-11 山西沁新能源集团股份有限公司 含添加剂的煤基活性焦的制备方法及该方法制得的煤基活性焦和应用

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