TW201512110A - Method for improved treatment of wastewaters from a coking oven plant - Google Patents
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- C02F1/00—Treatment of water, waste water, or sewage
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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Abstract
Description
本發明係關於一種處理來自煉焦爐廠的廢水之方法及設備。 The present invention relates to a method and apparatus for treating wastewater from a coke oven plant.
更具體地，本發明係關於一種處理來自煉焦爐廠的廢水之方法，該方法藉由一生物解毒階段對廢水進行處理，並且將所獲得的廢水在不進行後續硝化及脫硝的情況下傳送到一第二脫附塔(中塔)中，其中廢水基本上僅包含作為一種或多種主要降解產物的氨及二氧化碳；從該第二脫附塔(中塔)中，所脫附出的氨被引導到一第一脫附塔中，從而可能處理來自該生物解毒階段的氨，其中該第一脫附塔係用於在生物處理前使廢水脫氣；並且根據本發明，用於在該第二脫附塔(中塔)中脫附氨的氣體也可被利用在該第一脫附塔中藉由脫氣處理廢水。在一較佳實施例中，用於脫附氨之氣體係蒸氣。 More specifically, the present invention relates to a method of treating wastewater from a coke oven plant, which processes wastewater by a biological detoxification stage and delivers the obtained wastewater without subsequent nitrification and denitrification In a second desorption column (middle column), wherein the wastewater substantially contains only ammonia and carbon dioxide as one or more main degradation products; from the second desorption column (middle column), the desorbed ammonia Directed into a first desorption column, thereby potentially processing ammonia from the biological detoxification stage, wherein the first desorption column is used to degas the wastewater prior to biological treatment; and according to the present invention, The ammonia desorbing gas in the second desorption column (middle column) can also be utilized in the first desorption column to treat the wastewater by degassing. In a preferred embodiment, the system vapor is used to desorb ammonia.
在各煉焦廠中，經常獲得由於先前使用而產生的包含多種污染物或異物的廢水，在以對環境友好的方式處理廢水之前，污染物或異物必須被去除或轉化成對環境無害之形式。此類廢水尤其係指源自用於清潔及冷卻煉焦廠中多種物質及物體的方法步驟。此類方法步驟的實施例係用於由一水性液體清洗的煉焦廠氣體之氣體洗滌過程、用於焦炭之熄焦過程或用於使用水性調節液體進行調壓之方法步驟。在該等方法步驟中，所使用的蒸氣吸收不能直接被釋放到環境中的多種污染物或異物。這類污染物的實施例有有機化合物及無機 化合物，例如氮化合物類、氰化物類、苯酚類以及硫化合物類。 In various coking plants, wastewater containing a plurality of contaminants or foreign materials resulting from prior use is often obtained, and contaminants or foreign materials must be removed or converted into environmentally friendly forms before the wastewater is treated in an environmentally friendly manner. Such wastewater refers in particular to process steps derived from the cleaning and cooling of a wide variety of materials and objects in a coking plant. Embodiments of such method steps are a gas scrubbing process for a coke plant gas purged with an aqueous liquid, a coke quenching process for coke or a method step for pressure regulation using an aqueous conditioning liquid. In these method steps, the vapor used does not absorb a plurality of contaminants or foreign matter that are directly released into the environment. Examples of such contaminants are organic compounds and inorganic Compounds such as nitrogen compounds, cyanides, phenols, and sulfur compounds.
為了在將廢水引入環境中前去除污染物或將它們轉化成一無害形式，先前技術中的廢水被傳輸到一廢水處理操作。由於回收對於污染物通常是不經濟的，因此在先前技術中，對廢水進行處理來去除所述污染物，這種處理係藉由首先利用多個脫附過程來使其脫氣，再將剩餘的污染物或異物轉化成一無害形式來完成的。脫附過程在一脫附塔中發生，未處理的廢水首先被引入該脫附塔中，並且在該脫附塔中，所有氣態污染物或異物、或可轉化成一氣態形式的那些物質係藉由使用氣提之氣體被盡可能地氣提出。 In order to remove contaminants or convert them into a harmless form prior to introduction of the wastewater into the environment, the prior art wastewater is transferred to a wastewater treatment operation. Since recovery is generally uneconomical for contaminants, in the prior art, wastewater is treated to remove the contaminants by first deactivating them using multiple desorption processes, and then remaining The contaminants or foreign bodies are converted into a harmless form to complete. The desorption process takes place in a desorption column, into which untreated wastewater is first introduced, and in which the gaseous contaminants or foreign bodies, or those which can be converted into a gaseous form, are borrowed The gas used by the stripping is raised as much as possible.
這種的氣提之氣體在大多數情況下是蒸氣。蒸氣典型地在煉焦廠中係可被大量使用，並且對許多化合物而言是一種有效的氣提之氣體。還能夠熱裂解熱不穩定的污染物或異物，並且隨後將所獲得的氣體氣提出。收集到的蒸氣已經包含污染物之大部分，並可將其冷凝以分離出污染物，或可將其引入例如克勞斯(Claus)反應器中進行處理。將氣態物質從廢水中氣提出的氣提操作係在該脫附塔中發生，該脫附塔常常還被稱作煉焦廠塔或氣提塔。將多種氣體從液體氣提出也常稱作液體的脫氣。 This stripped gas is vapor in most cases. Vapors are typically used in large quantities in coking plants and are an effective stripping gas for many compounds. It is also possible to thermally crack thermally unstable contaminants or foreign matter, and then to extract the obtained gas. The collected vapor already contains a substantial portion of the contaminants and can be condensed to separate the contaminants or can be introduced into, for example, a Claus reactor for processing. The stripping operation of the gaseous material from the waste gas stream takes place in the desorption column, which is often also referred to as a coking plant tower or a stripping column. The introduction of multiple gases from liquid gases is also often referred to as degassing of liquids.
在先前技術中已知利用氣提之氣體並藉由脫附來處理廢水的多種脫附過程。US 4311597 A描述一種用於從包含游離氨及結合氨的廢水中去除氨之方法，所述方法包括以下步驟：蒸餾廢水以去除游離氨；用碳酸鈉處理所蒸餾的廢水，以便釋放結合氨；以及蒸餾所處理的廢水，以便去除釋放出的氨。在此方法的一實施例中，藉由使低壓蒸氣穿過塔來促進對游離氨及釋放出的氨兩者進行的氣提。以此方式，可將氨回收為一種有價值的材料。 A variety of desorption processes utilizing stripped gases and treating wastewater by desorption are known in the prior art. No. 4,311,597 A describes a process for removing ammonia from waste water comprising free ammonia and bound ammonia, the method comprising the steps of: distilling waste water to remove free ammonia; treating the distilled waste water with sodium carbonate to release bound ammonia; And distilling the treated wastewater to remove the released ammonia. In an embodiment of the method, stripping of both free ammonia and released ammonia is facilitated by passing a low pressure vapor through the column. In this way, ammonia can be recovered as a valuable material.
在由氣體脫附後獲得的廢水仍然包含不可氣提之物質，所以，這種廢水不能直接釋放到環境中。為此，要求另一廢水處理操作。在大多數情況中，係藉由在一解毒反應器中的生物廢水處理操作進行，在該解毒反應器中， 污染物藉由厭氧轉化或需氧轉化來代謝而轉化成代謝產物。這樣的代謝產物係例如銨化合物類及二氧化碳，並且在因硫酸化作用而產生的低硫濃度情況下，代謝產物係硫酸鹽類。 The wastewater obtained after desorption by gas still contains non-pneumatic substances, so this wastewater cannot be directly released into the environment. To this end, another wastewater treatment operation is required. In most cases, by a biological wastewater treatment operation in a detoxification reactor, in the detoxification reactor, Contaminants are converted to metabolites by anaerobic or aerobic conversion. Such metabolites are, for example, ammonium compounds and carbon dioxide, and in the case of low sulfur concentrations due to sulfation, the metabolites are sulfates.
由於銨化合物同樣不能直接釋放到環境中，因此，可以藉由在先前技術中，包括後續硝化及脫硝步驟之生物方法來將它們轉化成氮。硝化將銨化合物轉化成硝酸鹽，並且後續脫硝將硝酸鹽轉化成氮。隨後，將這種氮釋放到大氣中。 Since ammonium compounds are also not directly released into the environment, they can be converted to nitrogen by biological methods including prior nitrification and denitration steps in the prior art. Nitrification converts the ammonium compound to nitrate, and subsequent denitration converts the nitrate to nitrogen. This nitrogen is then released into the atmosphere.
包括解毒步驟及帶有後續脫硝的硝化步驟的一處理方法之一實施例由DE 102011001962 A1描述。這個公開案描述一種用於對煉焦廠的廢水進行生物處理之方法，廢水被氮化合物、氰化物、苯酚以及硫化物污染，並且為了去除多種抑制硝化的污染物，將其與一股含生物質的流一起輸送到具有一噴射區及一反應區之一解毒反應器中，所輸送到該解毒反應器的這種引入混合物與該噴射區中的一氣態氧化劑接觸，並且將一股含氧化劑的流輸送到該反應區，在該反應區中，氰化物及其他抑制硝化的污染物生物降解，並且將一股流從該解毒反應器的反應區中抽出，並且循環到該解毒反應器中，再藉由膜濾將來自該解毒反應器的一股廢水流分離成一股含生物質的滲餘物流及一股處理過的滲透物流，且將攜載過多污泥的一子流從該滲餘物流排放出來，並在該子流被去除後將該滲餘物流再循環到該解毒反應器中，而該滲透物流係藉由帶有後續脫硝之硝化來處理。 An embodiment of a treatment process comprising a detoxification step and a nitrification step with subsequent denitrification is described by DE 102011001962 A1. This publication describes a method for biological treatment of wastewater from coking plants, which is contaminated with nitrogen compounds, cyanide, phenol and sulfides, and in order to remove a plurality of pollutants that inhibit nitrification, and to contain a biomass containing The stream is transported together into a detoxification reactor having a spray zone and a reaction zone, the incoming mixture delivered to the detoxification reactor being contacted with a gaseous oxidant in the spray zone, and an oxidant containing Streaming to the reaction zone where cyanide and other nitrifying contaminants are biodegraded and a stream is withdrawn from the reaction zone of the detoxification reactor and recycled to the detoxification reactor, A wastewater stream from the detoxification reactor is separated into a biomass-containing retentate stream and a treated permeate stream by membrane filtration, and a substream carrying excess sludge is removed from the retentate The stream is discharged and the retentate stream is recycled to the detoxification reactor after the substream is removed, and the permeate stream is treated by nitration with subsequent denitrification
然而，這一系列的多個生物處理階段相當複雜，並且在該等單獨生物處理步驟後必須伴有過濾操作。此外，與廢水一起引入生物處理階段的銨化合物因硝化及脫硝的階段而未加以利用，因而損失掉了。因此，如果在煉焦廠塔中氣提後仍存在於廢水中的銨化合物可以至少用來作為有價值的材料，那麼將會是有利的。 However, the multiple biological treatment stages of this series are quite complex and must be accompanied by filtration operations after these individual biological treatment steps. Further, the ammonium compound introduced into the biological treatment stage together with the wastewater is not utilized due to the stage of nitrification and denitration, and thus is lost. Therefore, it would be advantageous if the ammonium compound still present in the wastewater after stripping in the coking plant column can be used at least as a valuable material.
DE 40 18 309 A1揭露一種用於處理來自在升高壓力下操作的多種氣化設備的廢水之方法。DE 1 168 398揭露一種用於處理包含氨及酸性組分的多種液體之方法。DE 1 767 108描述一種用於消除來自煉焦廠中獲得的水的氨之方法，並且DE 41 35 763揭露一種用於對多種含NH3-及/或H2S-的過程廢水及含硫化物的氫氧化鈉溶液進行組合處理之方法。 DE 40 18 309 A1 discloses a method for treating wastewater from a plurality of gasification plants operating at elevated pressures. DE 1 168 398 discloses a process for the treatment of a plurality of liquids comprising ammonia and acidic components. DE 1 767 108 describes a process for the removal of ammonia from water obtained in a coking plant, and DE 41 35 763 discloses a process wastewater and sulfide-containing substances for various NH 3 - and/or H 2 S--containing processes The sodium hydroxide solution is subjected to a combined treatment.
本發明一目的在於提供一種處理來自煉焦爐廠的廢水之方法。 It is an object of the present invention to provide a method of treating wastewater from a coke oven plant.
這係由本說明的主題及申請專利範圍實現的。 This is achieved by the subject matter of the present description and the scope of the patent application.
本發明的第一方面係關於一種處理來自煉焦廠的廢水之方法，該方法包括以下步驟：(a)在一第一脫附塔中對廢水脫氣；(b)用生物質對廢水進行生物解毒；(c)將廢水從該生物質中去除；(d)在一第二脫附塔中對廢水脫氣；以及(e)將從該第二脫附塔中去除的氣體傳輸到該第一脫附塔中。 A first aspect of the invention relates to a method of treating wastewater from a coking plant, the method comprising the steps of: (a) degassing wastewater in a first desorption column; (b) biologically treating wastewater with biomass Detoxification; (c) removing wastewater from the biomass; (d) degasing the wastewater in a second desorption column; and (e) transferring the gas removed from the second desorption column to the first A desorption tower.
本發明方法中的步驟(a)至(e)較佳的是按字母順序完成，但也可能該等單獨步驟完全或部分地同時完成。 Steps (a) to (e) in the process of the invention are preferably carried out in alphabetical order, but it is also possible that the individual steps are completed in whole or in part simultaneously.
更具體地，本發明藉由一種對來自煉焦廠的廢水進行處理之方法來實現這個目的，所述方法藉由以下步驟進行：首先在該第一脫附塔中用一(氣提之氣體)脫附氣體處理廢水，以去除所夾帶的雜質氣體(步驟(a))，然後引導經過處理而從該第一脫附塔去除雜質氣體的廢水進入一解毒階段，其中藉由一生物質對先前脫氣的廢水進行微生物廢水處理(步驟(b))，並且較佳的是藉由過濾來將廢水與該生物質分離(步驟(c))，並且隨後將處理過的廢水引導到一第二脫附塔(中塔)中，在該第二脫附塔中，藉由一脫附氣體去除含氨 廢水中的來自該解毒階段的所夾帶的殘餘氨及任何二氧化碳(步驟(d))，並且根據本發明，隨後將該脫附氣體與所脫附的氨一起從該第二脫附塔(中塔)再循環到該第一脫附塔中(步驟(e))。 More specifically, the present invention accomplishes this object by a method of treating wastewater from a coking plant by performing the following steps: first using one (gas stripping gas) in the first desorption column Desorbing the gas to treat the wastewater to remove the entrained impurity gas (step (a)), and then directing the wastewater that has been treated to remove the impurity gas from the first desorption column into a detoxification stage, wherein a biomass is previously removed The gaseous wastewater is subjected to microbial wastewater treatment (step (b)), and preferably the wastewater is separated from the biomass by filtration (step (c)), and then the treated wastewater is directed to a second off-gas In the tower (middle tower), in the second desorption tower, ammonia is removed by a desorption gas The entrained residual ammonia and any carbon dioxide from the detoxification stage in the wastewater (step (d)), and according to the present invention, the desorbed gas is then taken from the second desorption column together with the desorbed ammonia The column) is recycled to the first desorption column (step (e)).
在本發明上下文中，藉由分析來自該解毒階段的廢水發現，假如對該解毒階段適當管理，則來自此階段的廢水中之氮化合物基本上被轉化為游離氨。根據先前技術的方法中，後續的硝化及脫硝反應階段因此可以在本發明方法中省略。由於硝化及脫硝步驟係相對複雜的方法步驟，因此省略它們係本發明方法之顯著優點。因此，比起先前技術中已知的方法，本發明之方法能以更簡單且更廉價的方式進行。 In the context of the present invention, by analyzing the wastewater from the detoxification stage, if the detoxification stage is properly managed, the nitrogen compounds in the wastewater from this stage are substantially converted to free ammonia. According to the prior art process, subsequent nitrification and denitration reaction stages can therefore be omitted in the process of the invention. Since the nitrification and denitration steps are relatively complex method steps, their omission is a significant advantage of the method of the invention. Thus, the method of the present invention can be carried out in a simpler and less expensive manner than the methods known in the prior art.
在解毒反應階段後，仍存在於廢水中的游離氨及任何二氧化碳隨後可以藉由一氣體來氣提。這有利地是在該第二脫附塔(中塔)中實現，以使來自該第一脫附塔的引導到該解毒階段的廢水無需返回該第一脫附塔。為了能夠繼續使用用來在該第二脫附塔(中塔)中對游離氨進行氣提的這種氣體，可將它與所氣提出的氣體(尤其是氨)一起傳輸到該第一脫附塔中。鑒於此，不必要提供具有一相應解析氣體消耗的兩種不同供氣系統。同時，能夠以與所氣提出的雜質氣體相同的方式將氨從該第一脫附塔中排放出來。如果脫附氣體係蒸氣，則保存蒸氣。 After the detoxification reaction stage, the free ammonia and any carbon dioxide still present in the wastewater can then be stripped by a gas. This is advantageously achieved in the second desorption column (middle column) so that the wastewater from the first desorption column leading to the detoxification stage does not need to be returned to the first desorption column. In order to be able to continue to use such a gas for stripping free ammonia in the second desorption column (middle column), it can be transported together with the gas proposed by the gas (especially ammonia) to the first off-gas Attached to the tower. In view of this, it is not necessary to provide two different gas supply systems with a corresponding analytical gas consumption. At the same time, ammonia can be discharged from the first desorption column in the same manner as the impurity gas proposed by the gas. If the vapor of the gas system is desorbed, the vapor is stored.
在根據本發明方法之較佳實施例中，在方法步驟(a)及/或(d)中，所使用的脫附氣體(上文又稱為脫附氣體或氣提之氣體)較佳是蒸氣(水蒸氣)。這對氨具有充分的脫附作用，並且可在煉焦廠中提供，且沒有大的技術難度。然而，原則上，可能使用適於從廢水脫附雜質氣體的任何脫附氣體。對於廢水處理領域的技術人員來說是已知的，並且舉例而言在US 2777815 A中有所描述。本發明方法中使用的第一脫附塔可設有熟習該項技術者所已知的常規傳質元件，以便改進質量傳遞。 In a preferred embodiment of the process according to the invention, in process steps (a) and/or (d), the desorbed gas used (also referred to above as desorbed or stripped gas) is preferably Vapor (water vapor). This has sufficient desorption of ammonia and can be provided in coking plants without major technical difficulties. However, in principle, it is possible to use any desorbing gas suitable for desorbing impurity gases from the wastewater. It is known to those skilled in the art of wastewater treatment and is described, for example, in US Pat. No. 2,777,815. The first desorption column used in the process of the invention may be provided with conventional mass transfer elements known to those skilled in the art to improve mass transfer.
更具體地，還主張了一種用於藉由微生物解毒對煉焦廠中的廢水進行處理之方法，其中在煉焦廠中，獲得含硫及氮的廢水，藉由將氣體(氣提之氣體)穿過該第一脫附塔來在該第一脫附塔中處理這種廢水以去除所夾帶的溶解之雜質氣體，使得所脫附的雜質氣體及已經處理以去除溶解的氣體的廢水與氣體一起獲得，並且藉由該氣提之氣體從該第一脫附塔中去除所脫附的雜質氣體，並且將已經處理以去除雜質氣體並滿載來自煉焦過程的多種雜質(如氮化合物、氰化物、苯酚、有機化合物以及硫化合物)之廢水引入到該解毒反應器中，在該解毒反應器中，使處理過的廢水與雜質(如氮化合物、氰化物、苯酚、有機化合物以及硫化合物)進行需氧或厭氧降解的含微生物的生物質以及大氣氧反應，以便獲得經處理以去除雜質的含氨廢水，並且藉由超濾將因此獲得的廢水與該生物質分離，並且其特徵在於：將在超濾後獲得之處理過的含氨廢水在不進一步硝化及脫硝的情況下引導到該第二脫附塔(中塔)中，該第二脫附塔充滿用於脫附其中存在之氨的氣提之氣體(脫附氣體)，並且將該氣提之氣體(脫附氣體)在穿過該第二脫附塔(中塔)後，在與所脫附的氨之混合物中傳輸到該第一脫附塔中，使得氨與在該第一脫附塔中脫附的雜質氣體一起從該第一脫附塔中排放出來，並且從該第二脫附塔(中塔)中獲得基本上被去除溶解的氣體及污染物或異物，並可釋放到環境中之處理過的廢水。 More specifically, a method for treating wastewater in a coking plant by microbial detoxification is also claimed, in which a sulfur- and nitrogen-containing wastewater is obtained in a coking plant by wearing a gas (gas stripping gas) Passing the first desorption column to treat the wastewater in the first desorption column to remove the entrained dissolved impurity gas, so that the desorbed impurity gas and the wastewater that has been treated to remove the dissolved gas together with the gas Obtaining, and removing the desorbed impurity gas from the first desorption column by the stripped gas, and having processed to remove the impurity gas and full of various impurities (such as nitrogen compounds, cyanides, etc.) from the coking process Waste water from phenol, organic compounds, and sulfur compounds is introduced into the detoxification reactor where the treated wastewater and impurities (such as nitrogen compounds, cyanides, phenols, organic compounds, and sulfur compounds) are required. Oxygen or anaerobic degradation of microbial-containing biomass and atmospheric oxygen to obtain ammonia-containing wastewater treated to remove impurities, and the waste thus obtained by ultrafiltration Separating from the biomass, and characterized in that the treated ammonia-containing wastewater obtained after ultrafiltration is introduced into the second desorption column (middle column) without further nitrification and denitration, the first The second desorption column is filled with a gas (desorbed gas) for desorbing ammonia present therein, and the stripped gas (desorbed gas) is passed through the second desorption column (middle column) Transferring to the first desorption column in a mixture with the desorbed ammonia such that ammonia is discharged from the first desorption column together with the impurity gas desorbed in the first desorption column, and From the second desorption column (middle column), treated waste water which is substantially removed from dissolved gases and contaminants or foreign matter and which can be released into the environment is obtained.
根據本發明使用的生物質係基於多種微生物，該等微生物可任選地藉由供給空氣來確保對來自煉焦過程中的廢水中存在的污染物或異物(例如氮化合物、氰化物、苯酚、有機化合物以及硫化合物)的一需氧降解、或在排除空氣的情況下確保對該等污染物或異物的厭氧降解。熟習該項技術者知曉生物質用於這一最終用途的適合的組成及供應(provision)。 The biomass used in accordance with the present invention is based on a variety of microorganisms which, optionally by supplying air, ensure contaminants or foreign matter (e.g., nitrogen compounds, cyanides, phenols, organics) present in the wastewater from the coking process. Aerobic degradation of the compound as well as the sulfur compound, or anaerobic degradation of the contaminant or foreign matter, in the absence of air. Those skilled in the art are aware of the appropriate composition and provision of biomass for this end use.
在本發明方法執行中，已經發現將生物質與廢水分離(步驟(c))係不可缺少的，因為來自解毒階段中的含微生物廢水仍含活性污泥，這種活性 污泥在脫附過程中是有害的，並且會弄髒了該等塔。這種分離較佳的是藉由過濾、更佳的是藉由超濾來實現。然而，比起先前技術中後續進行的，並且在這種情況下省去的硝化及脫硝階段，這個分離步驟，尤其是超濾的複雜程度相對較低。 In the practice of the process of the invention, it has been found that the separation of biomass from wastewater (step (c)) is indispensable because the microbial wastewater from the detoxification stage still contains activated sludge, this activity The sludge is detrimental during the desorption process and can contaminate the towers. This separation is preferably achieved by filtration, more preferably by ultrafiltration. However, this separation step, especially ultrafiltration, is relatively less complex than the subsequent nitrification and denitration stages that were performed in the prior art.
在本發明的一實施例中，所脫附的雜質氣體從該第一脫附塔中排放出來，並在排放之後，被引入到用於一克勞斯設備的含硫酸性氣體中(步驟(f))，該克勞斯設備係由以下各項構成：一克勞斯爐，用於燃燒含硫酸性氣體的一第一子流以形成二氧化硫；及一克勞斯反應器，用於將帶有該含硫酸性氣體的第二子流之二氧化硫轉化成元素硫。然而，所脫附的雜質氣體在從該第一脫附塔去除之後也可傳輸用於任何期望的進一步用途。例如，這也可以是一用於硫酸製備之過程。 In an embodiment of the invention, the desorbed impurity gas is discharged from the first desorption column and, after being discharged, introduced into a sulfuric acid-containing gas for a Claus plant (step ( f)), the Claus plant is composed of a Claus furnace for burning a first substream containing a sulfuric acid gas to form sulfur dioxide; and a Claus reactor for The sulphur dioxide with the second substream containing the sulphuric acid gas is converted to elemental sulphur. However, the desorbed impurity gases can also be transported for any desired further use after being removed from the first desorption column. For example, this can also be a process for the preparation of sulfuric acid.
在本發明的另一個實施例中，該脫附氣體係蒸氣。這能以任何期望方式提供。被提供作為該脫附氣體並用於引入該第二脫附塔(中塔)中的蒸氣例如可為來自煉焦廠的蒸氣系統中的蒸氣。然而，用於引入該第二脫附塔(中塔)的蒸氣也可以是在一單獨蒸氣鍋爐中產生的蒸氣。 In another embodiment of the invention, the degassing system vapor. This can be provided in any desired manner. The vapor provided as the desorbing gas and used to introduce the second desorption column (middle column) may be, for example, a vapor from a vapor system of a coking plant. However, the vapor used to introduce the second desorption column (middle column) may also be a vapor produced in a separate steam boiler.
除了蒸氣，在原則上，可能利用尤其適於從廢水中脫附氨的任何其他脫附氣體。除了蒸氣，還有可能利用例如二氧化碳、氮、氦、氫、乙烷、丙烷或該等氣體中的兩種或更多種的混合物。然而，在實踐中，已經發現蒸氣係為最適合的脫附氣體，因為蒸氣能有效脫附氨，並且還熱裂解仍存在於廢水中的銨化合物。 In addition to steam, in principle it is possible to utilize any other desorbing gas that is particularly suitable for desorbing ammonia from wastewater. In addition to steam, it is also possible to utilize, for example, carbon dioxide, nitrogen, helium, hydrogen, ethane, propane or a mixture of two or more of these gases. However, in practice, it has been found that the vapor system is the most suitable desorption gas because the vapor is effective in desorbing ammonia and also thermally cracking the ammonium compound still present in the wastewater.
從該第二脫附塔(中塔)傳輸到該第一脫附塔(煉焦廠塔)的蒸氣可以經過先前技術中有用的進一步處理。這種蒸氣例如可以在從煉焦廠塔去除之後進行冷凝，並且可以回收雜質氣體或異物。在本發明上下文中，還有可能將來自該煉焦廠塔的蒸氣引導到克勞斯法中。在許多煉焦廠中，一克勞斯 設備還能夠操作用於將含硫異物轉化成元素硫。用於將硫化氫或有機硫化合物轉化成元素硫的克勞斯設備係先前技術中已知的。克勞斯法的實施例如由WO 2004014792 A1及WO 2004014791 A1揭露。 The vapor transported from the second desorption column (middle column) to the first desorption column (coking plant column) can be further processed as useful in the prior art. Such a vapor can be condensed, for example, after being removed from the coking plant column, and impurities or foreign matter can be recovered. In the context of the present invention, it is also possible to direct the vapour from the coking plant column into the Claus process. In many coking plants, one Claus The apparatus is also operable to convert sulfur-containing foreign matter to elemental sulfur. Claus equipment for converting hydrogen sulfide or organic sulfur compounds to elemental sulfur is known in the prior art. The implementation of the Claus method is disclosed, for example, in WO 2004014792 A1 and WO 2004014791 A1.
在從該生物質去除後，尤其是在濾出該生物質的超濾後，從解毒階段抽取出而未進一步硝化及脫硝的廢水一般具有低於釋放到環境中的容許限制的一殘餘異物含量。然而，常常仍必要或至少有利地進行進一步處理(步驟(h))，以便達到用於釋放到含水環境中的一最佳水質。進一步處理可以例如在於顆粒過濾或氧氣富集。在本發明的進一步實施例中，可能將來自該第二脫附塔(中塔)的廢水引導到一容器中(步驟(g))，其中該容器係為廢水在從過程中排放出前中間所存儲的容器。以此方式，可以在將廢水釋放到含水環境前根據要求對其進一步處理。還有可能將至少部分的廢水再循環到該第一脫附塔中。在這個情況中，可以將來自該第二脫附塔(中塔)的廢水引導到一容器中，其中該容器係為廢水在排放到該第一脫附塔前中間所存儲的容器。藉由該解毒反應器進行的廢水處理典型地是按週期執行，並且因此還可處於一種多重安排(multiple arrangement)。 After removal from the biomass, especially after ultrafiltration of the biomass, the wastewater extracted from the detoxification stage without further nitrification and denitrification generally has a residual foreign matter below the allowable limit of release into the environment. content. However, it is often necessary or at least advantageous to carry out further processing (step (h)) in order to achieve an optimum water quality for release into an aqueous environment. Further processing may for example be in particle filtration or oxygen enrichment. In a further embodiment of the invention, it is possible to direct the wastewater from the second desorption column (middle column) into a vessel (step (g)), wherein the vessel is the waste water before it is discharged from the process. Stored container. In this way, the wastewater can be further processed as required before being released into the aqueous environment. It is also possible to recycle at least part of the wastewater into the first desorption column. In this case, the wastewater from the second desorption column (middle column) can be directed to a vessel, wherein the vessel is the vessel stored in the middle of the discharge before discharge to the first desorption column. The wastewater treatment by the detoxification reactor is typically performed on a periodic basis and thus may also be in a multiple arrangement.
本發明的另一方面係關於一種用於處理來自煉焦爐廠的廢水之設備，該設備包括：(i)用於使廢水脫氣的第一脫附塔；(ii)用於藉由該生物質對廢水進行生物解毒的一個或多個解毒裝置；(iii)用於將廢水與該生物質分離的一裝置；以及(iv)用於對解毒過的廢水進行脫氣的第二脫附塔。 Another aspect of the invention relates to an apparatus for treating wastewater from a coke oven plant, the apparatus comprising: (i) a first desorption column for degassing wastewater; (ii) for utilizing the One or more detoxification devices for biological detoxification of the wastewater; (iii) a device for separating the wastewater from the biomass; and (iv) a second desorption column for degassing the detoxified wastewater .
本發明的設備較佳的是更包括：(vi)一克勞斯設備，包括：一克勞斯爐，用於燃燒含硫酸性氣體的一第一子流以形成二氧化硫；及一克勞斯反應器，用於將帶有該含硫酸性氣體的一第二 子流的該二氧化硫轉化成元素硫。 Preferably, the apparatus of the present invention further comprises: (vi) a Claus plant comprising: a Claus furnace for burning a first substream comprising a sulfuric acid gas to form sulfur dioxide; and a Claus a reactor for carrying a second gas containing the sulfuric acid The sub-stream of the sulfur dioxide is converted to elemental sulfur.
本發明的設備較佳的是更包括：(vii)用於產生蒸氣的一系統。 Preferably, the apparatus of the present invention further comprises: (vii) a system for generating vapor.
本發明的設備較佳的是更包括：(viii)用於已脫氣並處理過的廢水之中間存儲及可任選的進一步處理之一個或多個容器。 Preferably, the apparatus of the present invention further comprises: (viii) one or more containers for intermediate storage of the degassed and treated wastewater and optionally further processing.
更具體地，還主張了一種用於處理來自煉焦爐廠的廢水之設備，其中該設備包括用於處理來自煉焦廠的廢水之第一脫附塔及帶有下游超濾的解毒反應器，來自該第一脫附塔的滿載廢水被引導到該解毒反應器中，並且其特徵在於：該解毒反應器並不具有任何下游硝化及脫硝，並且該裝置具有該第二脫附塔(中塔)，處理過的廢水在超濾後被引導到該第二脫附塔中，並且該第二脫附塔配備有一蒸氣入口以及用於被引導到該第一脫附塔中的蒸氣之一條排放線路。 More specifically, an apparatus for treating wastewater from a coke oven plant is also claimed, wherein the apparatus includes a first desorption column for treating wastewater from a coking plant and a detoxification reactor with downstream ultrafiltration, from The fully loaded wastewater of the first desorption column is directed to the detoxification reactor and is characterized in that the detoxification reactor does not have any downstream nitrification and denitrification, and the device has the second desorption column (middle tower) The treated wastewater is directed to the second desorption column after ultrafiltration, and the second desorption column is equipped with a vapor inlet and one of the vapors for being directed into the first desorption column line.
上述方法具有的優點係實現一焦炭生產設備中的廢水處理，其中免除先前技術中要求的在解毒後進行以將銨化合物轉化成元素氮的複雜之硝化及脫硝階段係可能的，並且其中廢水基本上包含氨作為異物，氨可以直接在下游該第二脫附塔(中塔)中被氣提出，並且所使用的脫附氣體能以一節能方式直接用於該第一脫附塔(煉焦廠塔)中。這實現了整個方法的改進之經濟可行性。 The above method has the advantage of achieving wastewater treatment in a coke production facility, wherein it is possible to dispense with the complex nitrification and denitration stages required to convert ammonium compounds to elemental nitrogen after detoxification as required in the prior art, and wherein the wastewater Basically containing ammonia as a foreign matter, ammonia can be directly extracted in the second desorption column (middle column) downstream, and the desorbed gas used can be directly used in the first desorption column (coking) in an energy-saving manner. Factory tower). This achieves the economic viability of the improvement of the entire process.
本發明的多個進一步較佳的實施例係如下所述： A number of further preferred embodiments of the invention are as follows:
實施例1：用於藉由微生物解毒對煉焦廠中的廢水進行處理之方法，其中在煉焦廠中，獲得含硫及氮的廢水，藉由將氣體穿過該第一脫附塔來在該第一脫附塔中處理這種廢水，以去除所夾帶之溶解的雜質氣體，這樣使得所脫附的雜質氣體及已經處理以去除溶解的氣體的廢水與氣體一起獲得，並且 從該第一脫附塔中去除所脫附的雜質氣體，並且將已經處理以去除雜質氣體並滿載來自氮化合物、氰化物、苯酚、有機化合物以及硫化合物的多種雜質的廢水引入到該解毒反應器中，在該解毒反應器中，使處理過的廢水與對氮化合物、氰化物、苯酚、有機化合物以及硫化合物進行需氧或厭氧降解的含微生物之生物質及大氣氧反應，以便獲得經處理以去除雜質的含氨廢水，並且藉由超濾來處理因此獲得的廢水以將該生物質從其去除，其特徵在於：將超濾後從該解毒反應器排放出之處理過的含氨廢水在不進一步硝化及脫硝的情況下引導到該第二脫附塔(中塔)中，該第二脫附塔(中塔)充滿用於脫附其中存在之氨的脫附氣體，並且將該脫附氣體在穿過該第二脫附塔(中塔)後，在與所脫附的氨之混合物中再循環到該該第一脫附塔中，這樣使得氨與在該第一脫附塔中脫附的雜質氣體一起從該第一脫附塔中排放出來，並且從該第二脫附塔(中塔)獲得被去除溶解的氣體及異物並可釋放到環境中之處理過的廢水。 Example 1: A method for treating wastewater in a coking plant by microbial detoxification, wherein in a coking plant, sulfur and nitrogen-containing wastewater is obtained by passing a gas through the first desorption column The wastewater is treated in the first desorption column to remove the entrained dissolved impurity gas, such that the desorbed impurity gas and the wastewater that has been treated to remove the dissolved gas are obtained together with the gas, and The desorbed impurity gas is removed from the first desorption column, and waste water that has been treated to remove the impurity gas and is loaded with various impurities from nitrogen compounds, cyanide, phenol, organic compounds, and sulfur compounds is introduced into the detoxification reaction In the detoxification reactor, the treated wastewater is reacted with the microorganism-containing biomass and atmospheric oxygen which aerobic or anaerobic degradation of nitrogen compounds, cyanides, phenols, organic compounds and sulfur compounds, in order to obtain The ammonia-containing wastewater treated to remove impurities, and the wastewater thus obtained is treated by ultrafiltration to remove the biomass therefrom, characterized in that the treated content discharged from the detoxification reactor after ultrafiltration is contained The ammonia wastewater is led to the second desorption column (middle column) without further nitrification and denitration, and the second desorption column (middle column) is filled with desorption gas for desorbing ammonia present therein, And recycling the desorbed gas to the first desorption column after passing through the second desorption column (middle column) in a mixture with the desorbed ammonia, such that ammonia and Detach Together with the desorbed impurity gas discharged from the first desorption column, and the gas is obtained and the foreign substances are removed from the dissolved second desorption column (tower) and may be released into the environment of the treated wastewater.
實施例2：如實施例1所述之方法，其特徵在於：將所脫附的雜質氣體從該第一脫附塔中排放出來，並在排放之後，引入到用於一克勞斯設備的含硫酸性氣體中，該克勞斯設備係由以下各項構成：一克勞斯爐，用於燃燒含硫酸性氣體的一第一子流以形成二氧化硫；及一克勞斯反應器，用於將帶有該含硫酸性氣體的一第二子流之二氧化硫轉化成元素硫。 Embodiment 2: The method according to Embodiment 1, characterized in that the desorbed impurity gas is discharged from the first desorption tower and, after being discharged, introduced into a facility for a Claus plant. In the sulfuric acid-containing gas, the Claus plant is composed of a Claus furnace for burning a first substream containing a sulfuric acid gas to form sulfur dioxide; and a Claus reactor for use The second substream with the sulfuric acid-containing gas is converted to elemental sulfur.
實施例3：如實施例1及2中任一項所述之方法，其特徵在於：該脫附氣體係蒸氣。 Embodiment 3: The method of any of embodiments 1 and 2, wherein the degassing system vapor.
實施例4：如實施例3所述之方法，其特徵在於：被利用來引入到該第二脫附塔(中塔)中的蒸氣係來自煉焦廠中之蒸氣系統的蒸氣。 Embodiment 4: The method of Embodiment 3, wherein the vapor introduced into the second desorption column (middle column) is from a vapor of a vapor system in a coking plant.
實施例5：如實施例3所述之方法，其特徵在於：被利用來引入到該第二脫附塔(中塔)中的蒸氣係在一單獨蒸氣鍋爐中產生的。 Embodiment 5: The method of Embodiment 3, characterized in that the steam introduced into the second desorption column (middle column) is produced in a separate steam boiler.
實施例6：如實施例1至5中任一項所述之方法，其特徵在於： 將來自該第二脫附塔(中塔)的廢水引導到一容器中，其中該容器係為廢水在從過程排放前中間所存儲的容器。 Embodiment 6: The method of any of Embodiments 1 to 5, characterized in that: The wastewater from the second desorption column (middle column) is directed to a vessel, wherein the vessel is a vessel that is stored in the middle of the wastewater before it is discharged from the process.
實施例7：如實施例1至5中任一項所述之方法，其特徵在於：將來自該第二脫附塔(中塔)的廢水引導到一容器中，其中該容器係為廢水在排放到該第一脫附塔前中間所存儲的容器。 Embodiment 7: The method of any of embodiments 1 to 5, wherein the wastewater from the second desorption column (middle column) is directed to a vessel, wherein the vessel is wastewater The container stored in the middle of the first desorption tower is discharged.
實施例8：一種用於執行如實施例1至7中任一項所述之方法之的設備，其中該設備包括用於處理來自煉焦廠的廢水的一第一脫附塔及帶有下游超濾的一解毒反應器，來自該第一脫附塔的滿載廢水被引導到該解毒反應器中，其特徵在於：該解毒反應器並不具有任何下游硝化及脫硝，並且該裝置具有一第二脫附塔(中塔)，處理過的廢水在超濾後被引導到該第二脫附塔(中塔)中，並且該第二脫附塔(中塔)配備有一蒸氣入口以及用於被引導到該第一脫附塔中的該蒸氣的一條排放線路。 Embodiment 8: An apparatus for performing the method of any one of embodiments 1 to 7, wherein the apparatus comprises a first desorption tower for treating wastewater from a coking plant and with a downstream super a detoxification reactor filtered, the fully loaded wastewater from the first desorption column is directed to the detoxification reactor, characterized in that the detoxification reactor does not have any downstream nitrification and denitration, and the device has a a second desorption column (middle column), the treated wastewater is guided to the second desorption column (middle column) after ultrafiltration, and the second desorption column (middle column) is equipped with a vapor inlet and is used for A discharge line that is directed to the vapor in the first desorption column.
1‧‧‧第一脫附塔 1‧‧‧First Detachment Tower
1a‧‧‧傳質元件 1a‧‧‧ Mass transfer components
2‧‧‧廢水 2‧‧‧ Wastewater
2a‧‧‧泵 2a‧‧‧ pump
3‧‧‧蒸氣 3‧‧‧Vapor
4‧‧‧雜質氣體 4‧‧‧ impurity gas
4a‧‧‧廢水 4a‧‧‧ Wastewater
5‧‧‧解毒反應器 5‧‧‧Detoxification reactor
5a‧‧‧空氣供給 5a‧‧‧Air supply
5b‧‧‧攪拌操作 5b‧‧‧ stirring operation
6‧‧‧廢水 6‧‧‧ Wastewater
7‧‧‧生物質 7‧‧‧Biomass
8‧‧‧廢水 8‧‧‧ Wastewater
9‧‧‧超濾裝置 9‧‧‧Ultrafiltration device
10‧‧‧廢水 10‧‧‧ Wastewater
11‧‧‧第二脫附塔 11‧‧‧Second desorption tower
11a‧‧‧閥 11a‧‧‧Valve
12‧‧‧蒸氣 12‧‧‧Vapor
12a‧‧‧蒸氣鍋爐 12a‧‧·Steam boiler
12b‧‧‧蒸氣 12b‧‧‧Vapor
13‧‧‧雜質氣體及蒸氣 13‧‧‧ impurity gases and vapours
13a‧‧‧閥 13a‧‧‧Valve
14‧‧‧克勞斯爐 14‧‧‧ Claus furnace
14a‧‧‧第一子流 14a‧‧‧First substream
14b‧‧‧第二子流 14b‧‧‧Second substream
15‧‧‧克勞斯反應器 15‧‧‧ Claus reactor
15a‧‧‧含氮廢氣 15a‧‧‧Nitrogen-containing waste gas
16‧‧‧二氧化硫 16‧‧‧ sulfur dioxide
17‧‧‧廢水 17‧‧‧ Wastewater
18‧‧‧儲槽 18‧‧‧ storage tank
18a‧‧‧釋放出的水 18a‧‧‧Water released
第1圖係為本發明一實施例中之處理來自煉焦爐廠的廢水之設備的示意圖。 1 is a schematic view of an apparatus for treating wastewater from a coke oven plant in an embodiment of the present invention.
本發明由附圖第1圖進一步示出；此圖僅僅示出本發明的一說明性實施方式實施例，並且本發明不限制於此。熟習該項技術者應當瞭解，所描繪的特徵並非全都必須在發明設備中同時實現。 The invention is further illustrated by the accompanying drawings in which: FIG. 1 is an illustration of an illustrative embodiment of the invention, and the invention is not limited thereto. Those skilled in the art will appreciate that not all of the features depicted must be implemented simultaneously in the inventive device.
來自煉焦廠的其中溶解有雜質氣體的含污染物之廢水(2)被引入到一第一脫附塔(1)中。同時，熱蒸氣(3)以逆流被引入到該第一脫附塔(1)中，為了改進質量傳輸，該第一脫附塔(1)可以設有多個傳質元件(1a)。 此舉將使存在於廢水(2)中的雜質氣體(4)氣提出來，或者如果雜質氣體(4)作為熱不穩定的固體存在，則將它們熱分解並且然後將其驅逐出去。所氣提出的雜質氣體(4)及蒸氣(3)從該第一脫附塔(1)去除(13)。廢水(4a)(經處理以去除雜質氣體的廢水)隨後藉由一泵(2a)引導到一解毒反應器(5)中，該解毒反應器(5)包括帶有空氣供給(5a)的一充氣罐，在該解毒反應器(5)中，廢水(6)藉由一生物質(7)並利用需氧代謝進行處理。這種處理過程還可藉由一攪拌操作(5b)支援。來自該解毒反應器(5)的廢水(8)(處理過的廢水)被引入到一超濾裝置(9)之中。在這個過程中，廢水(8)(處理過的廢水)被去除該生物質(7)，並仍包含作為代謝後異物的二氧化碳及氨來作為異物。廢水(10)(經處理之過濾後的廢水)隨後被引入到一第二脫附塔(11)(中塔)中，在該第二脫附塔(11)(中塔)中，廢水(10)(經處理之過濾後的廢水)與熱蒸氣(12)摻合。蒸氣(12)係在單獨的一蒸氣鍋爐(12a)中產生的。以此方式，氣提出二氧化碳及氨。根據本發明，所氣提出的二氧化碳及氨與蒸氣(12b)(再循環到該第一脫附塔(1)中的蒸氣)一起被引入到該第一脫附塔(1)中，這支持了該第一脫附塔(1)中的脫附過程。從該第一脫附塔(1)氣提出的雜質氣體及蒸氣(13)一起被從該第一脫附塔(1)去除，並且可以經由一閥(13a)引入到克勞斯法之中。這由以下各項構成：一克勞斯爐(14)，用於燃燒硫化氫的一第一子流(14a)；及一克勞斯反應器(15)，用於將剩餘的硫化氫的第二子流(14b)與從該克勞斯爐(14)獲得的二氧化硫(16)反應。在該第二脫附塔(11)(中塔)中從處理過的廢水(10)氣提出的氨因此被引入到克勞斯爐(14)並在此處至少部分燃燒以得到氮。以此方式，在穿過克勞斯反應器(15)後，獲得一含氮廢氣(15a)。來自該第二脫附塔(11)(中塔)的廢水(17)藉由一閥(11a)釋放，並被引入到一儲槽(18)中。在存儲後，它被釋放到環境(18a)中。 The contaminant-containing wastewater (2) from the coking plant in which the impurity gas is dissolved is introduced into a first desorption column (1). At the same time, the hot steam (3) is introduced into the first desorption column (1) in a countercurrent flow, and the first desorption column (1) may be provided with a plurality of mass transfer elements (1a) for improved mass transfer. This will cause the impurity gas (4) gas present in the wastewater (2) to be raised, or if the impurity gas (4) exists as a thermally unstable solid, they are thermally decomposed and then expelled. The impurity gas (4) and vapor (3) proposed by the gas are removed (13) from the first desorption column (1). Waste water (4a) (waste treated to remove impurity gases) is then directed to a detoxification reactor (5) by a pump (2a) comprising a gas with air supply (5a) In the aeration tank, in the detoxification reactor (5), the wastewater (6) is treated by a biomass (7) and using aerobic metabolism. This process can also be supported by a stirring operation (5b). The wastewater (8) (treated wastewater) from the detoxification reactor (5) is introduced into an ultrafiltration unit (9). In this process, the wastewater (8) (treated wastewater) is removed from the biomass (7), and still contains carbon dioxide and ammonia as foreign substances after metabolism as foreign matter. The wastewater (10) (treated filtered wastewater) is then introduced into a second desorption column (11) (middle column) in which the wastewater (in the middle column) 10) (treated filtered wastewater) blended with hot steam (12). The vapor (12) is produced in a separate steam boiler (12a). In this way, the gas proposes carbon dioxide and ammonia. According to the present invention, the proposed carbon dioxide and ammonia are introduced into the first desorption column (1) together with the vapor (12b) (the vapor recycled to the first desorption column (1)), which supports The desorption process in the first desorption column (1). The impurity gas and vapor (13) from the first desorption column (1) gas are removed from the first desorption column (1) together, and can be introduced into the Claus process via a valve (13a) . This consists of a Claus furnace (14) for burning a first substream (14a) of hydrogen sulphide; and a Claus reactor (15) for the remaining hydrogen sulphide The second substream (14b) is reacted with sulfur dioxide (16) obtained from the Claus furnace (14). The ammonia raised from the treated wastewater (10) gas in the second desorption column (11) (middle column) is thus introduced into the Claus furnace (14) where it is at least partially combusted to obtain nitrogen. In this way, after passing through the Claus reactor (15), a nitrogen-containing exhaust gas (15a) is obtained. The wastewater (17) from the second desorption column (11) (middle column) is released by a valve (11a) and introduced into a storage tank (18). After being stored, it is released into the environment (18a).
1‧‧‧第一解吸脫附塔 1‧‧‧First Desorption Desorption Tower
1a‧‧‧傳質元件 1a‧‧‧ Mass transfer components
2‧‧‧廢水 2‧‧‧ Wastewater
2a‧‧‧泵 2a‧‧‧ pump
3‧‧‧蒸汽氣 3‧‧‧Steam gas
4‧‧‧雜質氣體 4‧‧‧ impurity gas
4a‧‧‧經處理以去除雜質氣體後之廢水 4a‧‧‧ Wastewater treated to remove impurity gases
5‧‧‧解毒反應器 5‧‧‧Detoxification reactor
5a‧‧‧空氣供給 5a‧‧‧Air supply
5b‧‧‧攪拌操作 5b‧‧‧ stirring operation
6‧‧‧廢水 6‧‧‧ Wastewater
7‧‧‧生物質 7‧‧‧Biomass
8‧‧‧處理過的廢水 8‧‧‧Processed wastewater
9‧‧‧超濾裝置 9‧‧‧Ultrafiltration device
10‧‧‧廢水 10‧‧‧ Wastewater
11‧‧‧第二脫附塔中塔 11‧‧‧Second Detachment Tower
11a‧‧‧用於釋放處理過的廢水之閥 11a‧‧‧Valve for the release of treated wastewater
12‧‧‧蒸汽氣 12‧‧‧Steam gas
12a‧‧‧蒸汽氣鍋爐 12a‧‧‧Steam gas boiler
12b‧‧‧再循環到解吸塔中的蒸汽氣 12b‧‧‧Vapor gas recycled to the desorption tower
13‧‧‧雜質氣體和及蒸汽氣 13‧‧‧ impurity gases and vapor gases
13a‧‧‧閥 13a‧‧‧Valve
14‧‧‧克勞斯爐 14‧‧‧ Claus furnace
14a‧‧‧硫化氫的第一子流 14a‧‧‧First substream of hydrogen sulfide
14b‧‧‧硫化氫的第二子流 14b‧‧‧Second substream of hydrogen sulphide
15‧‧‧克勞斯反應器 15‧‧‧ Claus reactor
15a‧‧‧含氮廢氣 15a‧‧‧Nitrogen-containing waste gas
16‧‧‧二氧化硫 16‧‧‧ sulfur dioxide
17‧‧‧廢水 17‧‧‧ Wastewater
18‧‧‧儲槽 18‧‧‧ storage tank
18a‧‧‧釋放出的水 18a‧‧‧Water released
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| DE4135763A1 (en) * | 1991-07-04 | 1993-01-07 | Krupp Koppers Gmbh | PROCESS FOR THE TREATMENT OF NH (ARROW DOWN) 3 (ARROW DOWN) AND / OR H (ARROW DOWN) 2 (ARROW DOWN) AND S-CONTAINING PROCESS WASTE AND SODIUM SULFID-CONTAINING NATURAL LIQUE |
| DE10233819A1 (en) | 2002-07-25 | 2004-02-12 | Thyssenkrupp Encoke Gmbh | Claus processing of hydrogen sulfide in coke oven gas achieves high removal efficiency operating with a single furnace and at lower temperatures than is usual practice |
| DE10233820A1 (en) | 2002-07-25 | 2004-02-12 | Thyssenkrupp Encoke Gmbh | Cracking reactor, for a Claus reactor to convert hydrogen sulfide into pure sulfur, has a horizontal cylindrical boiler, to take the hot gas into a combustion chamber and through a catalyst zone giving a hot process gas |
| DE102011001962A1 (en) | 2011-04-11 | 2012-10-11 | Thyssenkrupp Uhde Gmbh | Process and plant for biological treatment of coking plant wastewater |
-
2013
- 2013-04-12 DE DE201310006289 patent/DE102013006289A1/en not_active Ceased
-
2014
- 2014-04-09 WO PCT/EP2014/000952 patent/WO2014166631A1/en active Application Filing
- 2014-04-11 TW TW103113495A patent/TW201512110A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014166631A1 (en) | 2014-10-16 |
| DE102013006289A1 (en) | 2014-10-16 |
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