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1. 发明授权

US08152956B2 Use of chemical pulp mill steam stripper off gases condensate as reducing agent in chlorine dioxide production 有权
标题翻译：使用化学纸浆蒸汽汽提器将气体冷凝物作为二氧化氯生产中的还原剂
公开(公告)号：US08152956B2
公开(公告)日：2012-04-10
申请号：US12734846
申请日：2008-11-12
申请人： Naceur Jemaa , Michael Paleologou , George Sacciadis , Richard M. Berry
发明人： Naceur Jemaa , Michael Paleologou , George Sacciadis , Richard M. Berry
IPC分类号： D21C9/14
CPC分类号： C01B11/023 , D21C9/14 , D21C11/06
摘要： Steam stripper off gas from chemical pulp mills, for example kraft or sulphite pulp mills is rich in methanol and totally reduced sulphur (TRS) compounds. This gaseous stream is usually burned to avoid further handling of this TRS-rich, odorous stream. We found that once this gaseous stream is condensed, it can be used as a reducing agent in the chlorine dioxide generator, in place of purchased methanol. Surprisingly, we found that, in addition to the methanol component, the TRS components act as reducing agents during the production of chlorine dioxide or, at the very least, do not consume chlorine dioxide. The use of this stream in the ClO2 generator will allow pulp mills to reduce or eliminate the consumption of purchased methanol while providing a new approach to deal with TRS compounds in the chlorine dioxide generator rather than employing a dedicated TRS incinerator or any other combustion device.
摘要翻译：来自化学纸浆厂的蒸汽汽提器，例如牛皮纸或亚硫酸盐纸浆厂富含甲醇和完全还原的硫（TRS）化合物。这种气流通常被燃烧以避免进一步处理这种富含TRS的气味流。我们发现，一旦气态物流被冷凝，就可以用二氧化氯发生器中的还原剂代替购买的甲醇。令人惊讶的是，我们发现除了甲醇成分之外，TRS成分在二氧化氯生产过程中起减压剂的作用，或至少不消耗二氧化氯。在ClO2发生器中使用这种料流将允许纸浆厂减少或消除购买的甲醇的消耗，同时提供了处理二氧化氯发生器中的TRS化合物的新方法，而不是使用专用的TRS焚化炉或任何其它燃烧装置。

2. 发明申请

US20110176989A1 PROCESS FOR PRODUCING CHLORINE DIOXIDE USING WASTE GLYCEROL FROM A BIODIESEL PLANT 审中-公开
标题翻译：生物柴油厂使用废弃甘油的二氧化氯生产工艺
公开(公告)号：US20110176989A1
公开(公告)日：2011-07-21
申请号：US13120249
申请日：2009-09-22
申请人： Naceur Jemaa , Michael Paleologou
发明人： Naceur Jemaa , Michael Paleologou
IPC分类号： C01B11/02
CPC分类号： C01B11/023 , C10G2300/1014 , C10L1/026 , Y02E50/13 , Y02P30/20
摘要： A process for chlorine dioxide production uses waste glycerol from biodiesel plants as a reducing agent. This untreated waste stream may contain other reducing agents such as sodium chloride and methanol which were found to enhance the chlorine dioxide production. Other chemicals present in this waste stream did not affect the operation of the chlorine dioxide generator. Substituting the waste glycerol for methanol or other reducing agents helps kraft pulp mills in reducing the cost of producing chlorine dioxide while providing a use for the untreated waste glycerol stream.
摘要翻译：生产二氧化氯的方法使用来自生物柴油植物的废甘油作为还原剂。这种未经处理的废物流可能含有其他还原剂，如氯化钠和甲醇，这些还原剂可以增强二氧化氯的产生。存在于该废物流中的其它化学物质不影响二氧化氯发生器的运行。将废甘油代替甲醇或其它还原剂可以帮助牛皮纸浆厂减少生产二氧化氯的成本，同时为未处理的废甘油流提供用途。

3. 发明授权

US08349130B2 Process for treating pulp mill condenstates using a hollow fiber contactor 有权
标题翻译：使用中空纤维接触器处理纸浆厂冷凝器的方法
公开(公告)号：US08349130B2
公开(公告)日：2013-01-08
申请号：US12452735
申请日：2008-07-24
申请人： Naceur Jemaa , Michael Paleologou , Brian O'Connor
发明人： Naceur Jemaa , Michael Paleologou , Brian O'Connor
IPC分类号： D21C11/00
CPC分类号： B01D63/02 , B01D61/246 , B01D2311/13 , C02F1/20 , C02F2103/28 , C02F2301/063 , D21C11/00
摘要： A method and apparatus for the treatment of pulp mill condensates is described. A hollow fiber contactor, incorporating a hydrophobic membrane, was used to remove several undesirable compounds from pulp mill condensates. For example, TRS compounds and SO2 were efficiently stripped from kraft and sulphite mill evaporator condensates, respectively. Methanol was also removed from kraft mill condensates but at a lower efficiency than TRS. Furthermore, other undesirable compounds found in condensates of pulp mills that contribute to the BOD and COD loading to effluent treatment systems were also removed. These contactors are cost effective since air, vacuum or a suitable solvent or scrubbing solution can be used as the stripping medium to drive off through the membrane several undesirable compounds from the feed solution. The undesirable compounds removed can thus be burned in the recovery boiler, lime kiln or a dedicated boiler.
摘要翻译：描述了用于处理纸浆厂冷凝物的方法和设备。使用掺入疏水膜的中空纤维接触器从纸浆厂冷凝物中除去若干不需要的化合物。例如，TRS化合物和SO 2分别从硫酸盐和亚硫酸盐蒸发器冷凝物中有效地脱除。甲醇也从牛皮纸浆冷凝物中除去，但效率低于TRS。此外，在纸浆厂的冷凝物中发现的有助于污水处理系统的BOD和COD负载的其他不希望的化合物也被去除。这些接触器具有成本效益，因为空气，真空或合适的溶剂或洗涤溶液可用作汽提介质以从进料溶液中排出几个不需要的化合物。因此，除去的不需要的化合物可以在回收锅炉，石灰窑或专用锅炉中燃烧。

4. 发明授权

US08709203B2 Fractionation of a waste liquor stream from nanocrystalline cellulose production 有权
标题翻译：从纳米晶纤维素生产中分离出废液流
公开(公告)号：US08709203B2
公开(公告)日：2014-04-29
申请号：US13388455
申请日：2010-07-28
申请人： Naceur Jemaa , Michael Paleologou , Xiao Zhang
发明人： Naceur Jemaa , Michael Paleologou , Xiao Zhang
IPC分类号： D21C9/00 , D21C11/00 , B01D61/02 , C08B15/08 , C01B17/90
CPC分类号： D21C9/00 , B01D61/027 , C01B17/902 , C08B15/08 , D21C11/0007
摘要： During nanocrystalline cellulose (NCC) production, a considerable amount of sulphuric acid is used. After the separation of the NCC, the remaining solution contains sugars and residual sulphuric acid. The sugars are in the monomeric and oligomeric forms. To reduce the cost of NCC production and to produce other added-value products, the spent acid stream can be fractionated into sugar oligomers, sugar monomers, and acid. The acid can be recycled to the NCC manufacturing process after concentration. The sugar monomers and sugar oligomers can be used for the manufacturing of other valuable chemicals. Membrane nanofiltration can be used to achieve this objective. A polymeric membrane with a molecular weight cut-off in the range of 200 Dalton was employed. Using this approach, the majority of the acid was recovered in the permeate while the sugars were concentrated in a smaller stream. The sugar level in the separated acid/permeate stream was only about 3% of the original concentration. A second membrane filtration stage can be used to separate the monomeric from the oligomeric sugars. The two sugar streams can be employed in different applications to produce value-added products.
摘要翻译：在纳米晶纤维素（NCC）生产过程中，使用了大量的硫酸。在分离NCC后，剩余的溶液含有糖和残留的硫酸。糖是单体和低聚物形式。为了降低NCC生产成本和生产其他附加值产品，废酸流可以分馏成糖低聚物，糖单体和酸。浓缩后，酸可以回收到NCC制造过程。糖单体和糖低聚物可用于制造其他有价值的化学品。膜纳米过滤可以用来达到这个目的。使用分子量截止值在200道尔顿范围内的聚合物膜。使用这种方法，大部分酸在渗透物中回收，而糖被浓缩在较小的流中。分离的酸/渗透物流中的糖水平仅为原始浓度的约3％。可以使用第二膜过滤阶段将单体与低聚糖分离。这两种糖流可用于不同的应用，以产生增值产品。

5. 发明申请

US20120211184A1 FRACTIONATION OF A WASTE LIQUOR STREAM FROM NANOCRYSTALLINE CELLULOSE PRODUCTION 有权
标题翻译：来自纳米晶体纤维素生产的废液流的分离
公开(公告)号：US20120211184A1
公开(公告)日：2012-08-23
申请号：US13388455
申请日：2010-07-28
申请人： Naceur Jemaa , Michael Paleologou , Xiao Zhang
发明人： Naceur Jemaa , Michael Paleologou , Xiao Zhang
IPC分类号： D21C9/00
CPC分类号： D21C9/00 , B01D61/027 , C01B17/902 , C08B15/08 , D21C11/0007
摘要： During nanocrystalline cellulose (NCC) production, a considerable amount of sulphuric acid is used. After the separation of the NCC, the remaining solution contains sugars and residual sulphuric acid. The sugars are in the monomeric and oligomeric forms. To reduce the cost of NCC production and to produce other added-value products, the spent acid stream can be fractionated into sugar oligomers, sugar monomers, and acid. The acid can be recycled to the NCC manufacturing process after concentration. The sugar monomers and sugar oligomers can be used for the manufacturing of other valuable chemicals. Membrane nanofiltration can be used to achieve this objective. A polymeric membrane with a molecular weight cut-off in the range of 200 Dalton was employed. Using this approach, the majority of the acid was recovered in the permeate while the sugars were concentrated in a smaller stream. The sugar level in the separated acid/permeate stream was only about 3% of the original concentration. A second membrane filtration stage can be used to separate the monomeric from the oligomeric sugars. The two sugar streams can be employed in different applications to produce value-added products.
摘要翻译：在纳米晶纤维素（NCC）生产过程中，使用了大量的硫酸。在分离NCC后，剩余的溶液含有糖和残留的硫酸。糖是单体和低聚物形式。为了降低NCC生产成本和生产其他附加值产品，废酸流可以分馏成糖低聚物，糖单体和酸。浓缩后，酸可以回收到NCC制造过程。糖单体和糖低聚物可用于制造其他有价值的化学品。膜纳米过滤可以用来达到这个目的。使用分子量截止值在200道尔顿范围内的聚合物膜。使用这种方法，大部分酸在渗透物中回收，而糖被浓缩在较小的流中。分离的酸/渗透物流中的糖含量仅为原始浓度的约3％。可以使用第二膜过滤阶段将单体与低聚糖分离。这两种糖流可用于不同的应用，以产生增值产品。

6. 发明申请

US20100263816A1 USE OF CHEMICAL PULP MILL STEAM STRIPPER OFF GASES CONDENSATE AS REDUCING AGENT IN CHLORINE DIOXIDE PRODUCTION 有权
标题翻译：使用化学粉末蒸汽分离器将气体冷凝成二氧化氯生产中的还原剂
公开(公告)号：US20100263816A1
公开(公告)日：2010-10-21
申请号：US12734846
申请日：2008-11-12
申请人： Naceur Jemaa , Michael Paleogou , George Sacciadis , Richard M. Berry
发明人： Naceur Jemaa , Michael Paleogou , George Sacciadis , Richard M. Berry
IPC分类号： D21C3/18 , C01B11/02 , C09K3/00
CPC分类号： C01B11/023 , D21C9/14 , D21C11/06
摘要： Steam stripper off gas from chemical pulp mills, for example kraft or sulphite pulp mills is rich in methanol and totally reduced sulphur (TRS) compounds. This gaseous stream is usually burned to avoid further handling of this TRS-rich, odorous stream. We found that once this gaseous stream is condensed, it can be used as a reducing agent in the chlorine dioxide generator, in place of purchased methanol. Surprisingly, we found that, in addition to the methanol component, the TRS components act as reducing agents during the production of chlorine dioxide or, at the very least, do not consume chlorine dioxide. The use of this stream in the ClO2 generator will allow pulp mills to reduce or eliminate the consumption of purchased methanol while providing a new approach to deal with TRS compounds in the chlorine dioxide generator rather than employing a dedicated TRS incinerator or any other combustion device.
摘要翻译：来自化学纸浆厂的蒸汽汽提器，例如牛皮纸或亚硫酸盐纸浆厂富含甲醇和完全还原的硫（TRS）化合物。这种气流通常被燃烧以避免进一步处理这种富含TRS的气味流。我们发现，一旦气态物流被冷凝，就可以用二氧化氯发生器中的还原剂代替购买的甲醇。令人惊讶的是，我们发现除了甲醇成分之外，TRS成分在二氧化氯生产过程中起减压剂的作用，或至少不消耗二氧化氯。在ClO2发生器中使用这种料流将允许纸浆厂减少或消除购买的甲醇的消耗，同时提供了处理二氧化氯发生器中的TRS化合物的新方法，而不是使用专用的TRS焚化炉或任何其它燃烧装置。

7. 发明申请

US20100122784A1 PROCESS FOR TREATING PULP MILL CONDENSTATES USING A HOLLOW FIBER CONTACTOR 有权
标题翻译：使用中空纤维接触器处理浆料混合物的方法
公开(公告)号：US20100122784A1
公开(公告)日：2010-05-20
申请号：US12452735
申请日：2008-07-24
申请人： Naceur Jemaa , Michael Paleologou , Brian O'connor
发明人： Naceur Jemaa , Michael Paleologou , Brian O'connor
IPC分类号： D21C11/00
CPC分类号： B01D63/02 , B01D61/246 , B01D2311/13 , C02F1/20 , C02F2103/28 , C02F2301/063 , D21C11/00
摘要： A method and apparatus for the treatment of pulp mill condensates is described. A hollow fiber contactor, incorporating a hydrophobic membrane, was used to remove several undesirable compounds from pulp mill condensates. For example, TRS compounds and SO2 were efficiently stripped from kraft and sulphite mill evaporator condensates, respectively. Methanol was also removed from kraft mill condensates but at a lower efficiency than TRS. Furthermore, other undesirable compounds found in condensates of pulp mills that contribute to the BOD and COD loading to effluent treatment systems were also removed. These contactors are cost effective since air, vacuum or a suitable solvent or scrubbing solution can be used as the stripping medium to drive off through the membrane several undesirable compounds from the feed solution. The undesirable compounds removed can thus be burned in the recovery boiler, lime kiln or a dedicated boiler.
摘要翻译：描述了用于处理纸浆厂冷凝物的方法和设备。使用掺入疏水膜的中空纤维接触器从纸浆厂冷凝物中除去若干不需要的化合物。例如，TRS化合物和SO 2分别从硫酸盐和亚硫酸盐蒸发器冷凝物中有效地脱除。甲醇也从牛皮纸浆冷凝物中除去，但效率低于TRS。此外，在纸浆厂的冷凝物中发现的有助于污水处理系统的BOD和COD负载的其他不希望的化合物也被去除。这些接触器具有成本效益，因为空气，真空或合适的溶剂或洗涤溶液可用作汽提介质以从进料溶液中排出几个不需要的化合物。因此，除去的不需要的化合物可以在回收锅炉，石灰窑或专用锅炉中燃烧。

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