公开(公告)号：WO1991018864A1

公开(公告)日：1991-12-12

申请号：PCT/FI1991000168

申请日：1991-05-28

Applicant: KEMIRA OY ,  MATTILA, Tapio ,  SAARI, Kari ,  VUORI, Antti

Inventor： KEMIRA OY

IPC: C07C51/44

CPC classification number: C07C51/445 ,  D21C3/20

Abstract: The invention relates to a process for the recovery of a lower aliphatic acid, such as formic acid, from chemical pulp. A pulp which contains formic acid is first vacuum evaporated at 70-100 °C, and ultimately the vacuum-evaporated pulp is washed with hot water or stripped with steam at 100-140 °C.

公开(公告)号：WO1991018863A1

公开(公告)日：1991-12-12

申请号：PCT/FI1991000167

申请日：1991-05-28

Applicant: KEMIRA OY ,  SAARI, Kari ,  VUORI, Antti ,  MATTILA, Tapio

Inventor： KEMIRA OY

IPC: C07C51/44

CPC classification number: D21C3/20 ,  C07C51/44 ,  C13K1/04 ,  D21C11/10

Abstract: The invention relates to a process to a process for the recovery of lower aliphatic acids, such as formic acid, and sugars from the spent cooking liquor from a pulping process carried out with these same acids, lignin having been removed from the spent liquor. According to the invention, spent liquor is evaporated indirectly in a plurality of steps (1, 2, 3) by heating a preceding step (1, 2) with an acid-containing vapor (9, 13) obtained from the subsequent step (2, 3) and by diluting (4, 5) with the obtained condensate (11) the concentrated spent liquor (12) from the preceding step (2), water or a very dilute aqueous solution (14) being used in the last dilution step (3).

公开(公告)号：WO1991010643A1

公开(公告)日：1991-07-25

申请号：PCT/FI1991000006

申请日：1991-01-08

Applicant: KEMIRA OY ,  VUORI, Antti, Ilmari ,  MATTILA, Tapio

Inventor： KEMIRA OY

IPC: C07C231/02

CPC classification number: C07C231/02

Abstract: The invention relates to a process for preparing oxamide by a reaction taking place in a methanol solution between dimethyl oxalate and ammonia. The formed oxamide is separated out from the solution by crystallization, and the formed methanol is recovered from the solution by evaporation. According to the invention the preparation is carried out as a continuous process in which a portion of the mother liquor from the oxamide crystallization step is directed to an evaporator for methanol separation and in which the evaporation residue is combined with the balance of the mother liquor, which is recycled to the reaction step as the solvent into which the dimethyl oxalate and gaseous ammonia are fed. It is possible to use in the process one or more cooled reaction vessels, connected in series, in which the temperature is preferably adjusted to the range 15-45 DEG C, and one or more mixing vessels subsequent in the series to the reaction vessels, the oxamide separating out from the solution by crystallization in these mixing vessels. The feeding in of the ammonia required in the reaction may be suitably divided among the various reaction vessels in order to even out the heat amounts released in the various vessels.

Abstract translation: 本发明涉及通过在草酸二甲酯和氨之间的甲醇溶液中进行反应制备草酰胺的方法。 通过结晶将形成的草酰胺从溶液中分离出来，通过蒸发从溶液中回收形成的甲醇。 根据本发明，制备作为连续方法进行，其中将来自草酰胺结晶步骤的母液的一部分导向用于甲醇分离的蒸发器，并且其中蒸发残余物与母液余量组合， 将其循环到反应步骤作为向其中加入草酸二甲酯和气态氨的溶剂。 在该方法中可以使用串联连接的一个或多个冷却的反应容器，其中温度优选调节到15-45℃的范围，以及随后在反应容器中的一个或多个混合容器， 在这些混合容器中通过结晶分离出该溶液的草酰胺。 反应中所需的氨的进料可以适当地分配在各种反应容器中，以便均匀地排出在各种容器中释放的热量。

公开(公告)号：WO1991010637A1

公开(公告)日：1991-07-25

申请号：PCT/FI1991000007

申请日：1991-01-08

Applicant: KEMIRA OY ,  VUORI, Antti, Ilmari ,  MATTILA, Tapio

Inventor： KEMIRA OY

IPC: C07C55/06

CPC classification number: C07C51/09 ,  C07C55/06

Abstract: The invention relates to a process for preparing oxalic acid from dialkyl oxalate. The preparation is carried out by hydrolyzing a dialkyl oxalate in such a manner that there are formed alcohol, which is removed from the solution obtained as the result of hydrolysis, and oxalic acid, which is separated by crystallization from the obtained solution. The essential idea in the process according to the invention is that a dialkyl oxalate soluble in the mixture to be hydrolyzed is used in such a manner that as the result of the hydrolysis there is obtained a substantially homogenous aqueous solution, the alcohol released from the solution being removed by evaporation or distillation, whereafter the solution is transferred to a crystallizer. Most preferably, dimethyl oxalate is used in the invention, in which case methanol is obtained as a product in addition to oxalic acid. The preparation can be carried out as a continuous process in which the mother liquor left from the crystallization step is recycled into the hydrolysis step as the aqueous liquid phase.

Abstract translation: 本发明涉及一种由草酸二烷基酯制备草酸的方法。 通过水解草酸二烷基酯来进行该制备，所述方法是从由所得水解得到的溶液中除去形成的醇，以及通过结晶从所得溶液中分离的草酸。 根据本发明的方法中的基本思想是可溶于待水解的混合物中的草酸二烷基酯以这样的方式使用，由于水解的结果是获得基本上均匀的水溶液，从溶液中释出的醇 通过蒸发或蒸馏除去，然后将溶液转移到结晶器中。 最优选地，草酸二甲酯用于本发明，在这种情况下，除了草酸之外，获得甲醇作为产物。 该制备可以作为连续方法进行，其中从结晶步骤中留下的母液作为水性液相再循环到水解步骤中。

公开(公告)号：WO1995001345A1

公开(公告)日：1995-01-12

申请号：PCT/FI1994000307

申请日：1994-07-01

Applicant: KEMIRA OY ,  TURUNEN, Ilkka ,  OINAS, Pekka

Inventor： KEMIRA OY

IPC: C07D251/60

CPC classification number: C07D251/60

Abstract: The invention relates to a process for the preparation of melamine from urea by feeding molten urea and hot ammonia gas into a reactor having a pressure within the range 50-150 bar and a temperature within the range 360-430 DEG C, whereby a reaction product is obtained which contains a liquid melamine melt and a gas mixture. This gas mixture is separated from the liquid melamine melt, and the liquid melamine melt thus obtained is directed to a vaporizer and is vaporized therein, and the melamine-containing gas obtained from the vaporizer is cooled in a quencher, in which case the melamine crystallizes in a very pure state, the purity being typically at minimum 99.9 %.

Abstract translation: 本发明涉及一种从尿素制备三聚氰胺的方法，该方法是将熔融的尿素和热氨气送入压力在50-150巴的压力范围内，温度在360-430℃范围内的反应产物 得到含有液体三聚氰胺熔体和气体混合物。 将该气体混合物与液体三聚氰胺熔体分离，将由此获得的液体三聚氰胺熔体导向蒸发器并蒸发，并将从蒸发器获得的含三聚氰胺的气体在猝灭剂中冷却，在这种情况下，三聚氰胺结晶 在非常纯净的状态下，纯度通常在99.9％以下。

公开(公告)号：WO1993016611A1

公开(公告)日：1993-09-02

申请号：PCT/FI1993000068

申请日：1993-02-26

Applicant: KEMIRA OY

Inventor： KEMIRA OY ,  AHLNÄS, Thomas ,  RAURAMAA, Aino ,  LÖFGREN, Timo

IPC: A23L03/3508

CPC classification number: A23L3/3508 ,  A23K30/15 ,  Y02A40/943

Abstract: The invention relates to a liquid preservative composition which is suited for the preservation of green forage or the like and which contains as its active ingredient benzoic acid or its derivative. Benzoic acid or its derivative specifically promotes useful microbial activity in green forage. In the present invention their action is enhanced by adding to the composition propionic acid, which dissolves them, or a mixture of the same, together with formic acid and/or acetic acid. These acids also as such promote the said useful microbial activity. Other constituents which improve solubility and conventional agents promoting lactic acid fermentation can also be added to the composition.

Abstract translation: 本发明涉及一种适用于保护绿色饲料等的含有苯甲酸或其衍生物作为活性成分的液体防腐剂组合物。 苯甲酸或其衍生物特别促进绿色饲料中有用的微生物活性。 在本发明中，通过向组合物中加入将它们溶解的丙酸或其混合物与甲酸和/或乙酸一起加入，来提高其作用。 这些酸也如此促进所述有用的微生物活性。 提高溶解性的其他成分和促进乳酸发酵的常规试剂也可以加入到组合物中。

公开(公告)号：WO1993015834A1

公开(公告)日：1993-08-19

申请号：PCT/FI1993000048

申请日：1993-02-12

Applicant: KEMIRA OY ,  RAVOLA, Sointu ,  AITTA, Eero

Inventor： KEMIRA OY

IPC: B01J23/10

CPC classification number: B01D53/945 ,  B01D2255/908 ,  B01J23/10 ,  Y02T10/22

Abstract: The invention relates to a support for a three-way catalyst and to a method of producing the support, the support containing cerium. In order to promote the catalytic performance of the cerium in the support, at least one of the following elements of the lanthanide group is added to the support: europium, terbium, ytterbium, samarium, or praseodymium.

Abstract translation: 本发明涉及一种三元催化剂的载体和一种制备载体的方法，该载体含有铈。 为了促进铈在载体中的催化性能，将镧系元素族中的至少一种元素添加到载体中：铕，铽，镱，钐或镨。

公开(公告)号：WO1987003219A1

公开(公告)日：1987-06-04

申请号：PCT/FI1986000130

申请日：1986-11-20

Applicant: OY FINNPULVA AB ,  KEMIRA OY ,  NIEMI, Jouko ,  PYÖRIÄ, Kaarlo ,  KORHONEN, Heikki

Inventor： OY FINNPULVA AB ,  KEMIRA OY

IPC: B02C19/06

CPC classification number: B02C19/06

Abstract: Method and apparatus for improving the grinding result of a pressure chamber grinder. Finely divided material is fed into a pressurized equalizing tank (2) by a mechanical feeder device (1). The fed material is then transferred into a pre-grinder (3) where the material is fluidized by grinding-gas jets. The fluidized material-gas flow is divided by a bisecting device (6) into two component flows and accelerated through two accelerating nozzles (8) directed towards the centre point of the main grinding chamber (9). The invention is characterized in that the outlet end of main grinding-chamber (9), via an acceleration tube (10), is connected to a free-flow grinder (11) provided with tangentially directed grinding-gas nozzles (12) and wherefrom the ready-ground final product is being removed constantly through a centrally located exhaust pipe (13).

Abstract translation: 用于改善压力室研磨机研磨结果的方法和装置。 细分材料通过机械进料装置（1）进料到加压均化罐（2）中。 然后将进料的材料转移到预研磨机（3）中，其中材料通过研磨气体射流流化。 流化材料 - 气体流由二等分装置（6）分成两个组分流，并通过指向主研磨室（9）的中心点的两个加速喷嘴（8）加速。 本发明的特征在于，主研磨室（9）的出口端通过加速管（10）连接到设有切向定向研磨气体喷嘴（12）的自由流动研磨机（11），并且其中 现场最终产品通过位于中心的排气管（13）不断地被移除。

公开(公告)号：WO1995018069A1

公开(公告)日：1995-07-06

申请号：PCT/FI1994000588

申请日：1994-12-29

Applicant: KEMIRA OY ,  JÄFVERSTRÖM, Stefan ,  TUOMARLA, Juhani ,  KENAKKALA, Timo

Inventor： KEMIRA OY

IPC: C01G49/14

CPC classification number: C01G49/009 ,  C01G49/10 ,  C01G49/14 ,  C01P2006/80

Abstract: The invention relates to a process for the preparation of a pure and solid, sulfate- and hydroxide-based ferric compound such as ferric hydroxysulfate or sodium jarosite, the process comprising the following procedures: a) a sulfate- and/or chloride-based ferric salt is prepared, b) an acidic aqueous solution is prepared which comprises either sulfate ions and ferric ions or sulfate, chloride and ferric ions, c) the acidic aqueous solution is maintained for 2-12 h at a temperature of 60-220 DEG C for the production of a solid, sulfate- and hydroxide-based ferric compound, such as ferric hydroxysulfate or sodium jarosite, by hydrolysis, and d) the pure and solid sulfate- and hydroxide-based ferric compound, such as ferric hydroxysulfate or sodium jarosite, is separated from the acidic aqueous solution. The processes for the preparation of ferric hydroxysulfate and sodium jarosite differ substantially only in that in the preparation of sodium jarosite an acid aqueous solution is prepared which, in addition to the either sulfate and ferric ions or sulfate, chloride and ferric ions, also contains a water-soluble sodium compound, in which case sodium jarosite is formed instead of ferric hydroxysulfate in the hydrolysis of point c) of the process.

Abstract translation: 本发明涉及一种制备纯的和固体的基于硫酸盐和氢氧化物的三价铁化合物如羟基硫酸铁或钠黄钾铁矾的方法，该方法包括以下步骤：a）基于硫酸盐和/或氯化物的三价铁 制备盐，b）制备酸性水溶液，其包含硫酸根离子和三价铁离子或硫酸盐，氯化物和铁离子，c）酸性水溶液在60-220℃的温度下保持2-12小时 用于通过水解制备固体，基于硫酸盐和氢氧化物的三价铁化合物，例如氢氧化铁硫酸盐或钠黄钾铁矾，以及d）纯的和固体硫酸盐和氢氧化物的三价铁化合物，例如硫酸铁和氢氧化钠黄钾铁矾 与酸性水溶液分离。 用于制备羟基硫酸铁和钠黄钾铁矾的方法不同之处在于制备钠黄钾铁矾时，制备酸性水溶液，除了硫酸盐和铁离子或硫酸盐，氯化物和铁离子之外，还含有 水溶性钠化合物，在这种情况下，在步骤c）的水解中形成钠黄钾铁矾而不是硫酸铁。

公开(公告)号：WO1995003697A1

公开(公告)日：1995-02-09

申请号：PCT/FI1994000331

申请日：1994-07-27

Applicant: KEMIRA OY ,  HARJU-JEANTY, Pontus ,  JUPPO, Ari ,  AHLSKOG, Torbjörn ,  JOKINEN, Kari

Inventor： KEMIRA OY

IPC: A01N25/30

CPC classification number: A01N25/30 ,  A01N33/08 ,  A01N47/22 ,  A01N47/06 ,  A01N43/90 ,  A01N43/707 ,  A01N43/58 ,  A01N43/12 ,  A01N37/40 ,  A01N31/02 ,  A01N2300/00

Abstract: A herbicide composition comprising one or more active ingredients, known per se, such as benzofuran, bipyridine, hydroxybenzonitrile, carbamoyl phenyl carbamate, pyridazine, quinoline, sulphonyl urea or triazine herbicide, and one or more activity-promoting agents for improving the efficacy of the active ingredient/ingredients. According to the invention, the herbicide comprises at least one activity-promoting agent which is tetraalkoxylated alkyl diamine with general formula (I) in which R1, R2, R3 and R are groups which, independent of each other, conform to formula (II), in which one of groups A and B is hydrogen and the other a lower alkyl group, and p+q = 5-150, and n = 1-6, whereby the molecular weight of the compound according to formula (I) is in the range of about 1 000-40 000.

Abstract translation: 包含一种或多种本身已知的活性成分的除草剂组合物，例如苯并呋喃，联吡啶，羟基苄腈，氨基甲酰基苯基氨基甲酸酯，哒嗪，喹啉，磺脲或三嗪除草剂，以及一种或多种用于改善 活性成分/成分。 根据本发明，除草剂包含至少一种活性促进剂，其是通式（I）的四烷氧基化烷基二胺，其中R 1，R 2，R 3和R 4是彼此独立地符合式 （II）中，A和B中的一个是氢，另一个是低级烷基，p + q = 5-150，n = 1-6，由此式（I ）在约1 000-40 000的范围内。