SU1451431A1

SU1451431A1 - Heat exchanger

Info

Publication number: SU1451431A1
Application number: SU864151085A
Authority: SU
Inventors: Рустам Исмаилович Акчурин; Виктор Васильевич Мазаев; Виктор Иванович Зотов; Михаил Владимирович Красовицкий; Валентина Борисовна Сивашинская
Original assignee: Предприятие П/Я А-3605
Priority date: 1986-11-24
Filing date: 1986-11-24
Publication date: 1989-01-15

Abstract

Изобретение м. б. использовано при очистке водорода от кремнеорганических соединений в производстве силанов и хлор- силанов с использованием методов конденсации и вымораживани примесей из потока. Цель изобретени - повышение экономичности теплообменника. В полости, образованной днищем 2 корпуса 1 и трубной решеткой 3, размещен сосуд 6 с юбкой 7. Форма сосуда 6 конгруэнтна форме днища 2. Юбка 7 установлена с зазором соосно с сосудом 6 с внешней его стороны. Верхний торец 8 юбки 7 расположен выше основани 9 сосуда 6. Патрубок входа хладагента установлен над основанием 9 сосуда 6. Сосуд 6 закреплен на корпусе 1 консольно. Юбка 7 м. б. жестко прикреплена к сосуду 6 посредством ребер 12. Трубы 4 установлены в трубных решетках 3. Конструкци теплообменника позвол ет снизить расход хладагента. Хладагент, наход щийс в трубах 4 и полости 5, испар етс , обеспечива дополнительный подъем парожидкостной смеси по трубам 4 и повыша эффективность испарени . Образовавша с газова подушка в сосуде 6 вытесн ет хладагент, который стремитс заполнить сосуд 6. 1 з.п.ф-лы, 1 ил. i (Л 4 ел ИишА. N 00Invention m. B. used in the purification of hydrogen from organosilicon compounds in the production of silanes and chlorosilanes using the methods of condensation and freezing of impurities from the stream. The purpose of the invention is to increase the efficiency of the heat exchanger. In the cavity formed by the bottom 2 of the housing 1 and the tube sheet 3, a vessel 6 with a skirt 7 is placed. The shape of the vessel 6 is congruent to the shape of the bottom 2. The skirt 7 is installed with a clearance aligned with the vessel 6 on its outer side. The upper end 8 of the skirt 7 is located above the base 9 of the vessel 6. The refrigerant inlet pipe is installed above the base 9 of the vessel 6. The vessel 6 is fixed to the body 1 of the cantilever. Skirt 7 m. B. rigidly attached to the vessel 6 by means of the ribs 12. The pipes 4 are installed in tube sheets 3. The design of the heat exchanger reduces the coolant flow rate. The refrigerant in pipes 4 and cavity 5 evaporates, providing an additional rise of the vapor-liquid mixture through pipes 4 and increasing the evaporation efficiency. Formed with a gas cushion in the vessel 6 displaces the refrigerant, which tends to fill the vessel 6. 1 Cp. F-crystals, 1 sludge. i (L 4 ate IishA. N 00

Description

Изобретение относитс к холодильной и криогенной технике, в частности к аппаратам очистки водорода от кремнеоргани- чеЬких соединений в производствах сила- нор и хлорсиланов с использованием ме- то1дов низкотемпературной конденсации и вымораживани примесей из потока.The invention relates to refrigeration and cryogenic engineering, in particular, to apparatus for the purification of hydrogen from silica compounds in the production of silos and chlorosilanes using methods of low-temperature condensation and freezing of impurities from the stream.

Целью изобретени вл етс повышение эк ономичности за счет снижени расходаThe aim of the invention is to increase the conductivity by reducing the consumption

хладагента. : На чертеже схематично изображен тепло- 10refrigerant. : The drawing shows schematically the heat 10

о менник-вымораживатель.About the mennik-freezer.

I Теплообменник содержит корпус 1 с днищем 2, трубные решетки 3 с установленными между ними трубами 4. В полости 5 М жду трубной решеткой 3 и днишем 2 рас- положен сосуд 6 с юбкой 7, прикрепленной к|сосуду 6. Верхний торец 8 юбки 7 располо- Цен выше основани 9 сосуда 6. Патрубок 10 хладагента расположен над основа- HJieM 9 сосуда 6. Сосуд 6 прикреплен к кбрпусу 1 аппарата посредством консоли 11, 20 а| юбка 7 прикреплена к сосуду 6 посредст- в|)м, например, ребер 12.I The heat exchanger contains a housing 1 with a bottom 2, tube sheets 3 with pipes 4 installed between them. In the 5 M cavity I wait for a pipe grid 3 and the bottom 2 there is a vessel 6 with a skirt 7 attached to | a vessel 6. Upper end 8 of the skirt 7 The price is located above the base 9 of the vessel 6. The refrigerant pipe 10 is located above the base of the HJieM 9 vessel 6. The vessel 6 is attached to the housing 1 of the device by means of a console 11, 20 a | the skirt 7 is attached to the vessel 6 through |) m, for example, the ribs 12.

I Теплообменник работает периодически в циклическом режиме: в первой половине цик- л|а ведут охлаждение аппарата путем пода- хладагента, например криогенной жид- к|ости. Жидкий хладагент через патрубок 10 подачи хладагента в насышенном состо нии ввод т над основанием сосуда 6, он, стека вниз, одновременно попадает в зазор между 1фбкой 7 и сосудом 6, затем скапливаетс в| днище 2 аппарата и заполн ет трубы 4, г(ри этом не попада в сосуд 6, так как там Находитс газова подушка. Хладагент, на- 1од щийс в трубах 4 и в полости 5, ис- 11ар етс , образующийс при этом пар обеспечивает дополнительный вынужденный подъем парожидкостной смеси по трубам 4 и :- ффективность охлаждени аппарата.I The heat exchanger operates periodically in a cyclical mode: in the first half of the cycle, the machine is cooled by supplying a refrigerant, for example, a cryogenic liquid. Liquid refrigerant through the supply pipe 10 in the saturated state is injected above the base of the vessel 6, it stacks down at the same time enters the gap between the tank 7 and the vessel 6, then accumulates in | the bottom 2 of the apparatus and fills the pipes 4, g (this does not fall into the vessel 6, since there is a gas cushion there. The refrigerant, located in the pipes 4 and in the cavity 5, is drained, the steam generated thereby provides additional forced rise of the vapor-liquid mixture through pipes 4 and: - the cooling efficiency of the apparatus.

Образованна газова подушка в сосуде б «ытесн ет жидкий хладагент; который стре- гиитс заполнить внутренний объем сосуда 6.The gas cushion formed in the vessel expelles the liquid refrigerant; which straggles to fill the internal volume of the vessel 6.

пространство корпуса 1 напра чий газ (водород), из которог вают примеси в виде кремне соединений, а очищенный водо аппарата направл ют в произв нов и хлорсиланов. Первую п ла - очистку прекращают пр в межтрубном пространстве кого сопротивлени или при температуры на выходе очищен да, которое по вл етс вследст ни термического сопротивле мена.the space of the housing 1 is direct gas (hydrogen), from which impurities in the form of silica compounds, and the purified water apparatus is sent to derivatives and chlorosilanes. The first slab - cleaning is stopped in the annular space of a resistor or at the outlet temperature of the purification, which appears as a result of thermal resistance.

Вторую половину цикла - рата и очистка его от вымер сей - начинают со слива ж агента из корпуса 1 аппарата, т полости 5. Так как жидкого х счет сосуда 6 и юбки 7 значи ше, чем у прототипа, соответ ри хладагента уменьшаютс .The second half of the cycle — rata and cleaning it from extant semesters — begins with draining the agent from the body 1 of the apparatus, t of the cavity 5. Since the liquid x of the vessel 6 and the skirt 7 is significantly smaller than that of the prototype, the refrigerant is reduced.

Далее производ т отогрев а лением вымерзших примесей, по повтор ют.Next, they are produced by heating the frozen out impurities, by repeating.

Claims

1. A heat exchanger containing bottom plate, pipes, tube sheets, and agent pipe, characterized in that it increases efficiency by refrigerant flow, it is provided with a skirt, which are located in the bottom of the body and crucible, and the shape of the vessel is below the bottom. , the skirt is installed with but with a vessel with its outer end of the skirt located

5 neither the vessel, but the inlet pipe above the base of the vessel, when e is attached to the body console

2. Heat exchanger according to claim 1, in that the skirt is rigidly attached

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After cooling the apparatus into annular 40, for example, by means of fins.

the space of the housing 1 is directed to the working gas (hydrogen), from which impurities in the form of organosilicon compounds are frozen out, and the purified hydrogen is then transferred from the apparatus to the production of silanes and chlorosilanes. The first half of the cycle — cleaning is stopped when the hydraulic resistance increases in the annular space or when the temperature at the outlet of purified hydrogen rises, which appears due to the increase in thermal resistance of heat transfer.

The second half of the cycle — heating the apparatus and cleaning it from the frozen impurities — begins with draining the liquid refrigerant from the body 1 of the apparatus, i.e., from pipes 4 and cavity 5. Since the liquid refrigerant due to vessel 6 and skirt 7 is significantly less than that of prototype, respectively, the loss of refrigerant is reduced.

Next, the apparatus is heated by removing the frozen impurities, after which the cycle is repeated.

Invention Formula

1. A heat exchanger comprising a housing with a bottom plate, pipes fixed in tube sheets and a refrigerant inlet pipe, characterized in that, in order to increase efficiency by reducing refrigerant flow, it is provided with a vessel with a skirt that are placed in the cavity formed by the bottom the body and the tube sheet, the vessel being congruent with the bottom shape, the skirt is installed with a clearance aligned with the vessel on its outer side, the upper end of the skirt is located above the base5 of the vessel, and the refrigerant inlet that the vessel is attached to the cantilever body.

2. A heat exchanger according to claim 1, characterized in that the skirt is rigidly attached to the vessel.

0

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0 for example, by means of edges.