Apparatus for producing phosphoric acid
专利摘要:
Eine Vorrichtung zur Herstellung von Phosphorsäure durch Verbrennen von gelbem Phosphor besteht aus einem aus säurebeständigem Werkstoff, beispielsweise aus säurebeständigem Stahl, gebauten Verbrennungsturm mit kegelförmigem Mangel und flachem Boden. Der Verbrennungsturm weist in seinem unteren Bereich ein stumpf an den Mantel angesetztes und schräg nach oben gerichtetes Abgasrohr auf, während er in seinem mittleren Bereich von mehreren abwärts gerichteten Einspritzdüsen durchdrungen ist. Nahe seinem oberen Ende ist der Verbrennungsturm von einer konzentrisch angeordneten Säuretasse mit Überlaufwehr umgriffen, wobei das Überlaufwehr aus einem an der Innenseite der Säuretasse vollständig waagerecht angeordneten Rohrring besteht. Die Säuretasse trägt einen konusförmigen Turmdeckel und ist mit ihm dichtschließend verbunden. Weiterben ist der Turmdechel mittig von einem Halterohr mit einer Phosphorzerstäubungsdüse durchdrungen. Der Mantel des Verbrennungsturmes weist ein Kegelverhältnis von 1:10 bis 1:12 auf, während der von dem freitragenden Turmdeckel in Bezug auf die Horizontale gebildete Winkel a mindestens 19° beträgt. In die mittige Öffnung des Turmdeckels ist konzentrisch zum Halterohr ein wassergekühltes Luftführungsrohr eingehängt. 公开号:SU967261A3 申请号:SU792835392 申请日:1979-10-18 公开日:1982-10-15 发明作者:Тюммлер Урсус;Вернер Хуго 申请人:Хехст Аг (Фирма); IPC主号:
专利说明:
(54) DEVICE FOR OBTAINING PHOSPHORIC ACID
权利要求:
Claims (5) [1] The invention relates to chemical reactor designs, and can be used to produce phosphoric acid by burning yellow phosphorus. A device for producing phosphoric acid by burning yellow phosphorus is known, which contains a vertical body, made in the form of an inverted truncated cone, a bottom fixed on its smaller base, a nozzle for removing the exhaust gas, a mold obliquely fixed in the middle part of the body and directed towards the bottom , an annular bowl with an overflow gate, coaxially mounted on the upper end of the body under the lid, an air supply pipe located along the axis of the lid, a yellow phosphorus introduction pipe installed along the body axis in the air inlet pipe, and the nozzle placed at the outlet end of the pipe for introducing yellow phosphorus. In addition, the body made of steel is gummed from the inside and covered with an acid-resistant ceramic shell fl. A disadvantage of the known device is that the elimination of m. ; gummed and coated with ceramics,; a steel tower, which arises in case of insufficient irrigation of its walls with circulating phosphoric acid, because of its multi-layered structure, requires; costly and time consuming. In addition, the lid due to its uncooled ribbing is subjected to wear due to the heat of radiation of the phosphorus flame, and the wear is especially strong in those areas of the lid in which there is insufficient cooling with flowing water. The purpose of the invention is to intensify the process and increase productivity intensive cooling of the cover and the upper end of the case and increase of reliability. The goal is achieved by the fact that the device is equipped with a heat exchanger located in the lid coaxially with the air supply pipe and coaxially outside the pipe for introducing yellow phosphorus, and the overflow valve is made as a tube ring placed on the inside of the upper edge of the cup, the ratio of the truncated cone of the housing is from 1:10 to 1: 12, and the cover is made from. the angle of taper is from 19 to 25. Additionally, the device is equipped with a rim with guide vanes fixed on the air supply pipe, in which the central hole is made with a yellow phosphorus pipe passing through it, the part of the blades adapted to adjust their inclination) concentrically mounted on the upper part of the kraika with respect to the air inlet pipe of the retaining ring and its flexible fit to the cover with a flexible elastic cuff. The heat exchanger is made in the form of concentric tubular coils. The device is also equipped with a concentric-mounted annular cup in the zone of the lower edge of the lid with a drainage chute with overflow pipes located in its lower part and passing through the bottom of the drainage chute. Due to the cone ratio of the burner tower, the phosphoric acid film flowing in the inner wall of the tower to cool it does not detach from the wall and has a sufficient layer thickness. Due to this, the combustion tower made of acid-resistant steel can operate without disturbing external water cooling. . Due to the execution of the incineration tower from a simple acid-resistant steel case, possible leaks can be closed with little. telnom simple device. In the proposed device, the lid of the tower is made at such an angle that, with the smallest possible sheet thickness, it carries itself, and therefore does not require any stiffeners. Therefore, the tower cover can be optimally cooled with overflowing water while preventing its corrosion. Due to the flexible rubber seal which is located on the tower lid, even with varying amounts of cooling water, it is constantly distributed over the surface of the tower lid in the form of a uniform film. Due to the flexibility of the rim, besides tog, the gap between the rim and the lid is automatically cleared. Homogeneous mixing of air-suction air injected with phosphorus through air-assisted air is achieved through the use of guide vanes with a adjustable reflection angle and air-conductive tube. The durability of the air-conductive pipe, the outer side of which is subject to special corrosion, is enhanced by its construction of several Evikov pipe coils wound one to another, through each of which, separately, a tray of cooling water is passed through at high speed. Figure 1 schematically shows the device, a longitudinal section; figure 2 is an enlarged image of the upper region in figure 1. Free-standing. Installed on the foundation 1 of the combustion tower 2, which can expand freely upwards, consists of a cone-shaped body and a flat bottom. The combustion tower 2 has a pipe in its lower region. 3 for the waste gas, which is soldered At an obtuse angle to the body, and directed obliquely upwards. In its middle region, the combustion tower 2 has several downward-facing nozzles 4. The combustion tower 2 near its upper end is enclosed by a concentricly arranged acid bowl 5, which consists of an annular bottom sheet 6 and a cylindrical shell 7. The horizon is fixed exactly. At the upper end of the combustion tower 2, the tubular ring 8 forms an overflow valve of the acid bowl 5. The shell 7 of the cylinder carries at its upper end a cone-shaped cover 9 of the tower 2, which is connected to it gas-tight. The central opening in the tower cover 9 is limited by a top-flange pipe, which is enclosed by a concentrically located retaining ring 11. The pipe 10 is hung by a water-cooled air duct of the pipe 12, which consists of pipe coils wound into one another. The rim of the guide vanes 13 is screwed with the air-conducting tube 12 and the nozzle 10 and has a hole in the center through which the tube-holder 14 passes, which at its end inside the tower 2. for burning carries a nozzle 15 for spraying phosphorus. In addition, in the rim of the guide vanes 13 there are located outside the guide vanes 16. s; the upper flange of the rim of the guide vanes 13 is screwed to the air intake tap 17. The device operates as follows. The water flowing out of the air conduit 12 of the coolant flows through the retaining ring 11 to the cover of the tower 9, and the retaining ring keeps the water at such a level that the nozzle 10 is almost completely washed by the cooling water. Concentric to the p dporny ring 11, there is a flexible rubber edge 18, with which it flows through. the retaining ring 11 cooling water is distributed on the lid 9 of the tower to form a uniform water film. On the cylindrical shell 7 of the acid bowl 5, equipped with several overflows 19, the catching chute 20 is positioned in such a way that a part of the acid bowl 5, which is not filled with acid, is cooled outside of the casing 9 from the lid 9 of the tower 2 with water flowing through the backwater. The cover 9 has several openings for inspecting the inside of the tower, on which are partially washed by water and closed by the covers 21 of the shaft 22. The circulating phosphoric acid is supplied to the acid bowl 5 and to the nozzles 4 by means of a centrifugal pump 23, the suction side of which is connected with an acid store in the lower area of the tower 2 for szhilgani through the pipeline. water 54, heat exchanger 2B and pipe 26 or pipeline 27. Claim 1. Invention of producing phosphoric acid by burning yellow phosphorus, comprising a vertical body made in the form of an inverted truncated cone, a bottom fixed on its smaller base, a branch pipe for the withdrawal of gas, nozzles, obliquely fixed in the middle part of the body and directed towards the side, an annular bowl with an overflow gate, coaxially mounted on the upper end of the body under the lid, air inlet pipe An axially laid lid, a yellow phosphorus inlet pipe, mounted along the body axis in the air supply pipe, and a nozzle placed at the outlet end of the yellow phosphorus inlet pipe, from which process intensification and productivity increase due to intensive cooling of the lid and the upper end of the 6-pole and to ensure reliability; it is equipped with a heat exchanger located in the lid coaxially with the air supply -. a pipe and coaxially outside the pipe to introduce yellow phosphorus, and the overflow valve is designed as a tube ring placed on the inside of the upper edge of the bowl, the truncated cone ratio of the housing is from 1:10 to 1:12, and the lid is made with a taper angle from 19 to 25. [2] 2. The device according to claim 1, characterized in that it is provided with a contour with guide vanes fixed to the air supplying pipe, in which a central opening is made with a yellow phosphorus input pipe passing through it, and a part of the blades are configured to be adjustable their slope. [3] 3. A device according to Claim 1, characterized in that it is provided with a retaining ring concentrically mounted on the upper part of the lid with respect to the air inlet pipe and a freely fitting cover with a flexible elastic cuff. [4] 4. The device according to claim 1, characterized in that the heat exchanger is made in the form of concentric tubular coils. [5] 5. The device according to claim 1, about tl and h, a-. It is provided that it is provided with a fixedly-shaped annular bowl in the zone of the lower edge of the lid with a drainage chute with overflow pipes located in its lower part and passing through the bottom of the drainage chute. . Sources of information taken into account during the examination 1. Winnaker-Kühler. Chemical Technology, Volume I. Inorganic Technology, 1970, pp. 394 and 395. X 17 t. h
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同族专利:
公开号 | 公开日 US4252770A|1981-02-24| EP0010217A2|1980-04-30| DE2964298D1|1983-01-20| DE2845642A1|1980-04-30| EP0010217B1|1982-12-15| EP0010217A3|1980-05-14| AT1986T|1982-12-15| CA1132777A|1982-10-05|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题 US2708620A|1951-04-12|1955-05-17|Fmc Corp|Production of phosphoric acid| DE1041481B|1953-08-11|1958-10-23|Fmc Corp|Process for the production of aqueous phosphoric acid| US3057700A|1959-10-12|1962-10-09|Chemical Construction Corp|Phosphoric acid process| DE1111159B|1960-03-05|1961-07-20|Knapsack Ag|Process and device for the production of polyphosphoric acid| US3272597A|1961-03-03|1966-09-13|Knapsack Ag|Apparatus for producing higher polyphosphoric acids| US3526482A|1961-08-05|1970-09-01|Knapsack Ag|Apparatus for producing polyphosphoric acid| US3254846A|1965-01-21|1966-06-07|Hauck Mfg Co|Oil atomizing burner using low pressure air| DE1551798A1|1967-06-03|1970-09-10|Junkers & Co|Burner system for the combustion of a fuel-air mixture in a closed combustion chamber| NL7115924A|1970-12-11|1972-06-13| JPS52125465A|1975-11-14|1977-10-21|Masahiro Takeda|Method of promoting reaction of fluid mixture in stream feeding way|DE3315630A1|1983-04-29|1984-10-31|Hoechst Ag, 6230 Frankfurt|METHOD AND DEVICE FOR PRODUCING PHOSPHOROXIDE OXIDE USING THE REACTION HEAT| US6238637B1|1998-02-26|2001-05-29|Monsanto Company|Process and apparatus for preparation of phosphorus oxyacids from elemental phosphorus| CN1092601C|1998-07-20|2002-10-16|贵州科学院|Method and equipment for producing blast-furnace phosphoric acid| GB9901680D0|1999-01-26|1999-03-17|Bp Chem Int Ltd|Apparatus for introducing fluid into a stream|
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申请号 | 申请日 | 专利标题 DE19782845642|DE2845642A1|1978-10-20|1978-10-20|DEVICE FOR PRODUCING PHOSPHORIC ACID| 相关专利
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