SU856484A1 - Method of crystallizing sublimating substances - Google Patents
Method of crystallizing sublimating substances Download PDFInfo
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- SU856484A1 SU856484A1 SU782673860A SU2673860A SU856484A1 SU 856484 A1 SU856484 A1 SU 856484A1 SU 782673860 A SU782673860 A SU 782673860A SU 2673860 A SU2673860 A SU 2673860A SU 856484 A1 SU856484 A1 SU 856484A1
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(54) СПОСОБ КРИСТАЛЛИЗАЦИИ СУБЛИМИРУЮЩИХСЯ(54) METHOD OF CRYSTALLIZATION OF SUBLIMIZED
ВЕЩЕСТВSUBSTANCES
Изобретение относитс к химической технологии и может примен тьс в процессах очистки и выделени из парогазового потока нафталина, антрохинона, фенантрена, бензойной и терефталевой кислот, нафтолов, резорцина, фталевого ангидрида, серы, иода и других сублимирующихс веществ органического и неорганического синтеза, способных конденсироватьс из паровой фазы в твердое состо ние в процессах очистки газов от этих продуктов. Известен способ кристаллизации сублимирующихс веществ из парогазового потока путем охлаждени последнего в псевдоожиженном слое с насадкой из инертных твердых частиц округлой фор.мы 1. Недостатком известного способа вл етс низка производительность, большой расход хладагента, сложность регенерации частиц , привод ща к усложнению процесса. Цель изобретени - увеличение производительности , уменьшение расхода хладагента и упрощение процесса. Поставленна цель достигаетс тем, что согласно известному способу кристаллизации сублимирующихс веществ из парогазового потока путем охлаждени последнего в псевдоожиженном слое с насадкой из инертных твердых частиц округлой формы, охлаждение осуществл ют путем мелкодисперсного распылени хладагента в слой до перехода его в парообразное состо ние. Причем диаметр частиц насадки должен быть равен 1 X X 10 м, плотность 6Х 10 - 10Х 10 кг/м, а число псевдоожижени - 1,5-6. Кроме того, в качестве хладагента используют воду, расход которой регулируют по температуре пара над слоем. Пример 1. Провод т кристаллизацию паров нафталина из парогазового потока. Дл этого воздух с расходом 20 кг/ч, с концентрацией нафталина 30 X 10 кг/кг воздуха и температурой 81°С подают в конденсатордесублиматор с псевдоожиженным слоем. Насадкой сло служит фракци никелевых частиц парообразной формы диаметром 1,8Х 10 2,1 X 10 м. Высота сло насадки 4 X число псевдоожижени 2,2, температура конденсации 38,5°С. Дл охлаждени производ т распыление воды с температурой 20°С пневматической форсункой. Расход воды реThe invention relates to chemical technology and can be used in the processes of purification and separation of naphthalene, antroquinone, phenanthrene, benzoic and terephthalic acids, naphthols, resorcinol, phthalic anhydride, sulfur, iodine and other sublimated organic and inorganic synthesis substances capable of condensing from the vapor-gas stream. vapor phase to solid state in gas cleaning processes for these products. The known method of crystallization of freeze-dried substances from the vapor-gas stream by cooling the latter in a fluidized bed with a nozzle of inert solid particles of a rounded shape 1. The disadvantage of the known method is low productivity, high consumption of refrigerant, complexity of particle regeneration, which complicates the process. The purpose of the invention is to increase productivity, reduce refrigerant consumption and simplify the process. This goal is achieved by the fact that according to the known method of crystallization of sublimating substances from the vapor-gas flow by cooling the latter in a fluidized bed with a nozzle of inert solid particles of round shape, cooling is accomplished by finely spraying the refrigerant into the layer before it becomes vapor. Moreover, the diameter of the particles of the nozzle should be equal to 1 X X 10 m, density 6X 10 - 10X 10 kg / m, and the number of fluidization - 1.5-6. In addition, water is used as a refrigerant, the flow of which is controlled by the temperature of the steam above the bed. Example 1. A crystallization of naphthalene vapor from a vapor-gas stream is carried out. For this, air with a flow rate of 20 kg / h, with a naphthalene concentration of 30 X 10 kg / kg of air and a temperature of 81 ° C is fed to a fluidized bed condenser. The nozzle of the layer is a fraction of vapor-shaped nickel particles with a diameter of 1.8 x 10 2,1 X 10 m. The height of the nozzle layer is 4 X, the number of fluidization is 2.2, the condensation temperature is 38.5 ° C. For cooling, water is sprayed with a temperature of 20 ° C by a pneumatic nozzle. Re water flow
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782673860A SU856484A1 (en) | 1978-10-09 | 1978-10-09 | Method of crystallizing sublimating substances |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782673860A SU856484A1 (en) | 1978-10-09 | 1978-10-09 | Method of crystallizing sublimating substances |
Publications (1)
Publication Number | Publication Date |
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SU856484A1 true SU856484A1 (en) | 1981-08-23 |
Family
ID=20789213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782673860A SU856484A1 (en) | 1978-10-09 | 1978-10-09 | Method of crystallizing sublimating substances |
Country Status (1)
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SU (1) | SU856484A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4552566A (en) * | 1982-01-21 | 1985-11-12 | Ise Kagaku Kogyo Kabushiki Kaisha | Globulous products of subliming substance, its manufacturing process and manufacturing apparatus |
US5236466A (en) * | 1991-08-30 | 1993-08-17 | Chilean Nitrate Corporation | Fast cooling of partially solidified granules of low melting, subliming substances obtained by prilling |
US5437691A (en) * | 1991-08-30 | 1995-08-01 | Chilean Nitrate Corporation | Production of spherical shaped products of subliming substances |
-
1978
- 1978-10-09 SU SU782673860A patent/SU856484A1/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4552566A (en) * | 1982-01-21 | 1985-11-12 | Ise Kagaku Kogyo Kabushiki Kaisha | Globulous products of subliming substance, its manufacturing process and manufacturing apparatus |
US5236466A (en) * | 1991-08-30 | 1993-08-17 | Chilean Nitrate Corporation | Fast cooling of partially solidified granules of low melting, subliming substances obtained by prilling |
US5437691A (en) * | 1991-08-30 | 1995-08-01 | Chilean Nitrate Corporation | Production of spherical shaped products of subliming substances |
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