JP5875145B2 - Waste liquid treatment method - Google Patents

Waste liquid treatment method Download PDF

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JP5875145B2
JP5875145B2 JP2011219690A JP2011219690A JP5875145B2 JP 5875145 B2 JP5875145 B2 JP 5875145B2 JP 2011219690 A JP2011219690 A JP 2011219690A JP 2011219690 A JP2011219690 A JP 2011219690A JP 5875145 B2 JP5875145 B2 JP 5875145B2
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康徳 菅本
康徳 菅本
一志 和泉
一志 和泉
将 小竹
将 小竹
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Taiheiyo Cement Corp
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本発明は、廃液処理方法に関し、特に、各種工場から排出される廃液をセメント製造工程で処理する方法に関する。   The present invention relates to a waste liquid treatment method, and more particularly, to a method for treating waste liquid discharged from various factories in a cement manufacturing process.

各種工場から排出される廃液中には、例えば臭気の原因となる有害成分が含まれるため、廃液をセメント製造工程で処理する場合には、有害成分を分解することのできる焼成工程の800℃以上の高温領域を通過させる必要がある。この際、高温領域での温度低下を補填するために燃料の増し焚きを行うと、セメントクリンカ焼成のための熱量原単位が悪化する。また、燃料の増し焚きにより生成する燃焼ガス、廃液処理によって生成する水蒸気を処理する必要があるため、その分セメントクリンカ生産量の低下を招き、プレヒータ排気ファンの電力原単位が悪化する。   The waste liquid discharged from various factories contains, for example, harmful components that cause odors. Therefore, when the waste liquid is processed in the cement manufacturing process, the firing process can decompose the harmful components at 800 ° C or higher. It is necessary to pass through the high temperature region. At this time, if the fuel is increased in order to compensate for the temperature drop in the high temperature region, the calorific value for cement clinker firing deteriorates. Further, since it is necessary to process the combustion gas generated by increasing the amount of fuel and the water vapor generated by the waste liquid treatment, the production amount of cement clinker is reduced correspondingly, and the power consumption rate of the preheater exhaust fan is deteriorated.

そこで、特許文献1には、各種工場からの廃液を焼却設備において安定して処理するため、発熱量が7000kcal/kg以上の疎水性微粉体を廃液に混合し、廃液の発熱量を2700kcal/kg以上に上昇させて燃焼処理する廃液の処理方法が開示されている。   Therefore, in Patent Document 1, in order to stably process waste liquid from various factories in an incineration facility, a hydrophobic fine powder having a calorific value of 7000 kcal / kg or more is mixed with the waste liquid, and the calorific value of the waste liquid is 2700 kcal / kg. There has been disclosed a method for treating a waste liquid that has been raised and burned.

特開2004−41920号公報JP 2004-41920 A

しかし、特許文献1に記載の廃液処理方法では、廃液に疎水性微粉体を混合するための設備が必要になると共に、混合操作が煩雑で運転コストの上昇に繋がるという問題がある。また、この方法でも、スラリーを焼却処理するため、熱量原単位が悪化すると共に、焼却処理によって生成する水蒸気等を含むガスを処理する必要があり、セメントクリンカ生産量の低下を招き、プレヒータ排気ファンの電力原単位が悪化するという問題が依然として残る。   However, the waste liquid treatment method described in Patent Document 1 requires a facility for mixing the hydrophobic fine powder with the waste liquid, and has a problem that the mixing operation is complicated and the operation cost increases. Also in this method, since the slurry is incinerated, the calorific value is deteriorated, and it is necessary to process a gas containing water vapor generated by the incineration process, resulting in a decrease in the production amount of cement clinker, and a preheater exhaust fan The problem of the worsening of the electricity consumption rate remains.

そこで、本発明は、上記従来の廃液処理方法における問題点に鑑みてなされたものであって、セメントクリンカ焼成のための熱量原単位、プレヒータ排気ファンの電力原単位の悪化を招くことなく、装置及び運転コストを低く抑えながら効率よく廃液を処理することを目的とする。   Therefore, the present invention has been made in view of the problems in the above-described conventional waste liquid treatment method, and the apparatus does not cause deterioration of the calorific value for cement clinker firing and the power intensity of the preheater exhaust fan. And it aims at processing a waste liquid efficiently, keeping operation cost low.

上記目的を達成するため、本発明は、廃液処理方法であって、直接セメント焼成工程で処理するには800℃以上の高温領域を通過させる必要がある廃液を、セメント製造工程においてセメント焼成工程の主熱帯以外の場所で工業用水として利用できるが放流することはできない程度まで浄化処理した後、前記場所で工業用水として利用することを特徴とする。ここで、セメント焼成工程の主熱帯とは、セメントキルン、仮焼炉、プレヒータ等で構成される焼成装置において、セメント原料の脱炭酸、クリンカ生成反応に直接関係する場所であって、その場所の温度低下がセメントクリンカ焼成の熱量原単位の低下を招く場所をいう。また、上記廃液は、例えば、臭気の原因となるVOC等の有害成分を含むものをいう。 In order to achieve the above object, the present invention is a waste liquid treatment method, and waste liquid that needs to pass through a high temperature region of 800 ° C. or higher for direct treatment in the cement firing process is used in the cement production process. after purification treatment to the extent that it is not possible can be used as industrial water in places other than the main tropical it is discharged, characterized in that used as industrial water in the place. Here, the main tropical cement burning process, a cement kiln, precalciner, the calciner composed flop Lech over data, etc., decarboxylation of cement raw material, a place which is directly related to the clinker formation reaction, The place where the temperature drop of the place causes the fall of the calorimetric unit of cement clinker firing. Moreover, the said waste liquid says what contains harmful components, such as VOC which causes an odor, for example.

そして、本発明によれば、浄化処理によって有害成分を除去処理し、廃液を焼成工程の主熱帯以外の場所で利用するため、燃料の増し焚きによるセメントクリンカ焼成のための熱量原単位の悪化や、プレヒータ排気ファンの電力原単位の悪化を招くことなく、装置及び運転コストを低く抑えながら効率よく廃液を処理することができる。また、工業用水として利用するため、セメント製造工程での工業用水の使用量の低減にも繋がる。   And, according to the present invention, harmful components are removed by purification treatment, and the waste liquid is used in places other than the main tropics in the firing process. The waste liquid can be efficiently processed while keeping the apparatus and the operating cost low without deteriorating the power consumption of the preheater exhaust fan. Moreover, since it uses as industrial water, it leads also to the reduction of the usage-amount of industrial water in a cement manufacturing process.

上記廃液処理方法において、前記廃液を、石油精製における脱硫によって生じる廃液、植物油の精製によって生じる廃液、有機物含有廃液、含油廃液から選択される1種以上を含むものとすることができる。 In the wastewater treatment method, the waste liquid may be intended to include liquid waste resulting from the desulfurization of petroleum refining, waste arising Purification of vegetable oils, organic substance-containing waste liquid, at least one selected from oil-containing waste.

また、前記廃液に含まれる有害成分を吸着、酸化又は凝集沈殿して除去することで、前記廃液を浄化処理することができる。   Further, the waste liquid can be purified by adsorbing, oxidizing or coagulating and removing the harmful components contained in the waste liquid.

さらに、前記工業用水を、前記セメント製造工程のプレヒータのガス出口部、スタビライザの内部、原料ドライヤのガス入口部、又は竪型原料ミル内部のいずれかでの散水に用いることができる。   Furthermore, the industrial water can be used for watering at any of the preheater gas outlet, the stabilizer, the raw material dryer gas inlet, or the vertical raw material mill inside the cement manufacturing process.

以上のように、本発明によれば、セメントクリンカ焼成のための熱量原単位悪化、プレヒータ排気ファンの電力原単位の悪化を招くことなく、装置及び運転コストを低く抑えながら効率よく廃液を処理することができる。   As described above, according to the present invention, waste liquid can be efficiently processed while keeping the apparatus and operating costs low without causing deterioration of the calorific value for cement clinker firing and the deterioration of the power intensity of the preheater exhaust fan. be able to.

本発明に係る廃液処理方法を適用したセメント製造設備を示す概略図である。It is the schematic which shows the cement manufacturing equipment to which the waste liquid processing method concerning this invention is applied.

次に、本発明を実施するための形態について図面を参照しながら詳細に説明する。   Next, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

図1は、本発明に係る廃液処理方法を適用したセメント製造設備を示し、このセメント製造設備1は、セメント焼成装置を構成するセメントキルン2及びサスペンションプレヒータ(以下「プレヒータ」という)3と、プレヒータ排ガスの調湿を行うスタビライザ(調湿塔)10と、セメント原料Rを乾燥粉砕する原料工程を構成する原料ドライヤ4、竪型原料ミル5及び原料ボールミル11と、集塵装置6と、煙突7と、廃液Wの浄化装置8及び供給配管9等を備える。また、図示を省略するが、セメントキルン2とプレヒータ3との間には、仮焼炉が設けられ、セメントキルン2にはクリンカクーラが付設される。プレヒータ3と、原料ドライヤ4又は竪型原料ミル5との間には、廃熱発電設備等が配置される。   FIG. 1 shows a cement production facility to which a waste liquid treatment method according to the present invention is applied. This cement production facility 1 includes a cement kiln 2 and a suspension preheater (hereinafter referred to as “preheater”) 3 constituting a cement firing device, and a preheater. A stabilizer (humidity control tower) 10 for conditioning the exhaust gas, a raw material dryer 4, a vertical raw material mill 5 and a raw material ball mill 11 constituting a raw material process for drying and pulverizing the cement raw material R, a dust collector 6, and a chimney 7 And a waste water W purifier 8 and a supply pipe 9. Although not shown, a calciner is provided between the cement kiln 2 and the preheater 3, and a clinker cooler is attached to the cement kiln 2. Between the preheater 3 and the raw material dryer 4 or the vertical raw material mill 5, waste heat power generation equipment and the like are arranged.

上記セメントキルン2〜煙突7、スタビライザ10、原料ボールミル11、仮焼炉、クリンカクーラ、廃熱発電設備等は、一般的なセメント製造設備に設けられているものであって、本発明に係る廃液処理方法を適用したセメント製造設備1は、廃液Wの浄化装置8及び供給配管9を備えることを特徴とする。   The cement kiln 2 to the chimney 7, the stabilizer 10, the raw material ball mill 11, the calcining furnace, the clinker cooler, the waste heat power generation equipment, etc. are provided in a general cement manufacturing equipment, and the waste liquid according to the present invention. The cement manufacturing facility 1 to which the treatment method is applied is characterized by including a purification device 8 and a supply pipe 9 for the waste liquid W.

浄化装置8は、廃液Wを浄化処理するために設けられ、吸着や酸化凝集沈殿によって廃液に含まれる臭気の原因となるVOC等の有害成分を除去する。後述するように、浄化装置8で浄化した廃液Wは、工業用水として利用するため、浄化装置8による浄化は、河川や海洋に放流する排水処理のような高度な浄化処理は不要で、工業用水として利用できる程度までの浄化処理で足りる。   The purification device 8 is provided to purify the waste liquid W, and removes harmful components such as VOC that cause odors contained in the waste liquid by adsorption and oxidative aggregation precipitation. As will be described later, since the waste liquid W purified by the purification device 8 is used as industrial water, the purification by the purification device 8 does not require advanced purification treatment such as drainage treatment to be discharged into rivers or oceans. As long as it can be used as a cleansing process.

廃液Wの供給配管9は、浄化装置8からプレヒータ3のガス出口部までの第1配管9a、原料ドライヤ4のガス入口部までの第2配管9b、竪型原料ミル5の内部までの第3配管9cとで構成される。   The supply pipe 9 for the waste liquid W includes a first pipe 9 a from the purification device 8 to the gas outlet of the preheater 3, a second pipe 9 b to the gas inlet of the raw material dryer 4, and a third pipe to the inside of the vertical raw material mill 5. It is comprised with the piping 9c.

次に、上記構成を有するセメント製造設備1を用いた本発明に係る廃液処理方法について、図1を参照しながら説明する。   Next, a waste liquid treatment method according to the present invention using the cement production facility 1 having the above configuration will be described with reference to FIG.

受け入れた廃液Wを浄化装置8で浄化処理する。浄化処理にあたっては、廃液に含まれる有害成分を活性炭等を用いて吸着したり、酸化剤を用いて酸化処理して浄化する。凝集剤を用いて凝集沈殿処理して、例えば、有機溶剤成分を含む廃液を活性炭を用いて浄化処理すると、表1に示すように、廃液中のVOCをほとんどを除去することができる。   The received waste liquid W is purified by the purification device 8. In the purification treatment, harmful components contained in the waste liquid are adsorbed using activated carbon or the like, or oxidized using an oxidizing agent to be purified. When coagulating and precipitating using an aggregating agent and purifying a waste liquid containing an organic solvent component using activated carbon, for example, as shown in Table 1, most of the VOC in the waste liquid can be removed.

Figure 0005875145
Figure 0005875145

浄化処理された廃液Wは、有害成分が除去されているため、焼成工程の800℃程度以上の高温領域を通過させる必要はない。   Since the waste liquid W subjected to the purification treatment has been removed of harmful components, it is not necessary to pass through a high temperature region of about 800 ° C. or higher in the baking process.

次に、浄化処理した廃液Wを、供給配管9を用いて工業用水としてセメント製造設備1の各所で使用する。例えば、第1配管9aによって搬送した廃液Wをプレヒータ3のガス出口部やスタビライザ10の内部に散水する。この部分で散水するのは、後段の廃熱発電設備等で耐熱温度の比較的低い部材等を使用している場合があるからである。   Next, the purified waste liquid W is used in various places of the cement production facility 1 as industrial water using the supply pipe 9. For example, the waste liquid W conveyed by the first pipe 9 a is sprinkled into the gas outlet portion of the preheater 3 and the inside of the stabilizer 10. The reason for spraying water in this part is that there may be a case where a member having a relatively low heat-resistant temperature is used in a later-stage waste heat power generation facility or the like.

また、第2配管9bによって搬送した廃液Wを原料ドライヤ4のガス入口部に散水する。この部分での散水は、プレヒータ3からの排ガスを調温及び調湿して後段の集塵装置6における集塵を効率よく行うためなどの目的で行う。   Further, the waste liquid W conveyed by the second pipe 9 b is sprinkled on the gas inlet of the raw material dryer 4. Sprinkling at this portion is performed for the purpose of efficiently collecting dust in the subsequent dust collecting device 6 by adjusting the temperature and humidity of the exhaust gas from the preheater 3.

さらに、第3配管9cによって搬送した廃液Wを竪型原料ミル5の内部で粉砕機の振動を抑えるために散水することもできる。   Further, the waste liquid W conveyed by the third pipe 9c can be sprinkled inside the vertical raw material mill 5 in order to suppress vibration of the pulverizer.

尚、上記実施の形態においては、浄化処理した廃液Wを、プレヒータ3のガス出口部、スタビライザ10の内部、原料ドライヤ4のガス入口部、竪型原料ミル5の内部に散水したが、セメント製造工程のその他の場所で工業用水として利用することもできる。   In the above embodiment, the purified waste liquid W is sprinkled into the gas outlet part of the preheater 3, the interior of the stabilizer 10, the gas inlet part of the raw material dryer 4, and the inside of the vertical raw material mill 5. It can also be used as industrial water elsewhere in the process.

以上説明したように、本実施の形態では、受け入れた廃液Wを浄化装置8で浄化処理し、工業用水としてプレヒータ3のガス出口部等に散水するため、焼成工程の主熱帯で利用した場合のように、燃料の増し焚きによるセメントクリンカ焼成のための熱量原単位の悪化や、プレヒータ排気ファンの電力原単位の悪化を招くことがない。   As described above, in the present embodiment, the received waste liquid W is purified by the purification device 8 and sprayed to the gas outlet of the preheater 3 as industrial water, so that it is used in the main tropics of the firing process. Thus, there is no deterioration in the calorific value for cement clinker firing due to the increase in fuel and the power intensity of the preheater exhaust fan.

また、廃液Wの浄化処理は、排水処理のような高度な処理までは不要であるため、浄化のための装置及び運転コストを低く抑えることができる。   Further, since the purification treatment of the waste liquid W is not necessary up to the advanced treatment such as the waste water treatment, the device for purification and the operation cost can be kept low.

さらに、浄化処理した廃液Wを、セメント製造設備1で使用される工業用水の一部として利用するため、その分工業用水使用量を低減することができる。   Further, since the purified waste liquid W is used as part of industrial water used in the cement manufacturing facility 1, the amount of industrial water used can be reduced accordingly.

1 セメント製造設備
2 セメントキルン
3 プレヒータ
4 原料ドライヤ
5 竪型原料ミル
6 集塵装置
7 煙突
8 浄化装置
9 供給配管
9a 第1配管
9b 第2配管
9c 第3配管
10 スタビライザ
11 原料ボールミル
DESCRIPTION OF SYMBOLS 1 Cement production equipment 2 Cement kiln 3 Preheater 4 Raw material dryer 5 Vertical raw material mill 6 Dust collector 7 Chimney 8 Purifier 9 Supply pipe 9a First pipe 9b Second pipe 9c Third pipe 10 Stabilizer 11 Raw material ball mill

Claims (4)

直接セメント焼成工程で処理するには800℃以上の高温領域を通過させる必要がある廃液を、セメント製造工程においてセメント焼成工程の主熱帯以外の場所で工業用水として利用できるが放流することはできない程度まで浄化処理した後、前記場所で工業用水として利用することを特徴とする廃液処理方法。 To treat directly in the cement firing process, waste liquid that needs to pass through a high-temperature region of 800 ° C. or higher can be used as industrial water in a cement manufacturing process other than the main tropics, but cannot be discharged. after purification treatment to, wastewater treatment method characterized by utilizing as industrial water in the place. 前記廃液は、石油精製における脱硫によって生じる廃液、植物油の精製によって生じる廃液、有機物含有廃液、含油廃液から選択される1種以上を含むことを特徴とする請求項1に記載の廃液処理方法。 The waste liquid, waste liquid processing method according to claim 1, characterized in that it comprises waste caused by desulfurization in petroleum refining, waste arising Purification of vegetable oils, organic substance-containing waste liquid, at least one selected from oil-containing waste. 前記廃液に含まれる有害成分を吸着、酸化又は凝集沈殿して除去することで、前記廃液を浄化処理することを特徴とする請求項1又は2に記載の廃液処理方法。   The waste liquid treatment method according to claim 1 or 2, wherein the waste liquid is purified by adsorption, oxidation or coagulation precipitation to remove harmful components contained in the waste liquid. 前記工業用水を、前記セメント製造工程のプレヒータのガス出口部、スタビライザの内部、原料ドライヤのガス入口部、又は竪型原料ミル内部のいずれかでの散水に用いることを特徴とする請求項1、2又は3に記載の廃液処理方法。   The industrial water is used for sprinkling water at any of the preheater gas outlet, the stabilizer inside, the raw material dryer gas inlet, or the vertical raw material mill inside the cement manufacturing process. The waste liquid treatment method according to 2 or 3.
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JP3304300B2 (en) * 1997-07-14 2002-07-22 太平洋セメント株式会社 Cement raw material processing method
JP4181682B2 (en) * 1999-02-19 2008-11-19 太平洋セメント株式会社 Factory waste liquid treatment method
JP3267948B2 (en) * 1999-03-11 2002-03-25 株式会社ダイセキ Treatment method for oil-containing waste liquid
JP3976986B2 (en) * 2000-04-27 2007-09-19 月島環境エンジニアリング株式会社 Wastewater treatment method for recovery of volatile organic compounds
JP2002052378A (en) * 2000-08-09 2002-02-19 Sumitomo Osaka Cement Co Ltd Wastewater treatment method
JP4202004B2 (en) * 2001-06-28 2008-12-24 三菱重工業株式会社 Hazardous substance removal system
JP4438329B2 (en) * 2002-06-26 2010-03-24 三菱マテリアル株式会社 Method for treating waste containing organic matter
JP4408632B2 (en) * 2003-02-05 2010-02-03 宇部興産株式会社 Factory waste liquid treatment method
JP3880962B2 (en) * 2003-12-24 2007-02-14 健太郎 朝倉 How to handle hazardous substances
JP5100432B2 (en) * 2008-02-15 2012-12-19 太平洋セメント株式会社 Exhaust gas treatment method

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