SU644548A1

SU644548A1 - Gas centrifugal purification method

Info

Publication number: SU644548A1
Application number: SU762343027A
Authority: SU
Inventors: Василий Гаврилович Говоров
Original assignee: Govorov Vasilij G
Priority date: 1976-03-10
Filing date: 1976-03-10
Publication date: 1979-01-30

Description

1one

Изобретение относитс к технике газоочистки и может найти применение в различных област х промышленности.This invention relates to a gas cleaning technique and may find application in various industries.

Известен способ очистки газа путем направлени потоков навстречу друг другу 1. При взаимодействии этих газовых потоков аэрозоли, содержащиес в газе, сепарируютс сначала из основного внутреннего потока в вспомогательный наружный поток , а затем направл ютс на выгрузку.The known method of gas purification by directing the flows towards each other 1. When these gas flows interact, the aerosols contained in the gas are separated first from the main internal flow into the auxiliary external flow, and then sent for unloading.

Недостаток известного способа заключаетс взначительных энергозатратах, необходимых дл поддержани соответствующих давлений потоков газа, а также в том, что внутренний поток движетс в сторону, иротивоположную направлению вывода аэрозолей , что ухудшает условие их извлечени .A disadvantage of the known method is the considerable energy consumption required to maintain the respective pressures of the gas streams, as well as the fact that the internal flow moves in the opposite direction to the output of aerosols, which worsens the condition of their extraction.

Известен также способ центробежной очистки газа, включаюш,ий подвод газа в аппарат двум вращающимис внешним и внутренним потоками, движущимис поступательно вниз. Потоки газа вращаютс при этом в одном направлении 2.There is also known a method of centrifugal gas cleaning, including the gas supply to the apparatus by two rotating external and internal flows moving downwards. The gas flows rotate in the same direction 2.

При очистке газа по известному способу частицы аэрозол отбрасываютс центробежной силой к стенке аппарата, при этом имеет место рикошетирование частиц и вторычный захват их потоком, что ведет к снижению степени очистки газа.When cleaning gas in a manner known per se, aerosol particles are thrown away by centrifugal force against the wall of the apparatus, ricocheting of particles and secondary capture by their flow takes place, which leads to a decrease in the degree of gas purification.

С целью интенсификации процесса очистки газа по предлагаемому способу внешнему и внзтреннему потокам газа сообщают противоположное направление вращени , аIn order to intensify the process of gas purification of the proposed method, the external and external gas flows are informed by the opposite direction of rotation, and

количество газа, подаваемого во внешний поток, берут равным 10-40% от общего количества очищаемого газа.the amount of gas supplied to the external stream is taken equal to 10-40% of the total amount of gas to be purified.

При осуществлении очистки газа в поле центробежных сил по предлагаемому способу иаличие внешнего потока, вращающегос в противоположном направлении по отношению к основному, центральному потоку, снижает вторичный унос аэрозолей , вызванный их рекошетированием от стенок корпз са , и ведет к повышению общей степени очистки газа.When performing gas cleaning in the field of centrifugal forces according to the proposed method, the presence of an external flow rotating in the opposite direction with respect to the main, central flow reduces the secondary entrainment of aerosols caused by their re-cutting from the walls of the building and leads to an increase in the overall degree of gas purification.

Claims

Example 1. Flue gases in the amount of 1000, at a temperature of 180 ° C, containing ash in the amount of 5.5 g / m, are served under an overpressure of 500 mm of water. Art. into an apparatus in which the gases are divided into two streams. The internal flow with a volume of 700 is twisted clockwise, the outside: the flow of 300 with a volume of 300 in the opposite direction. Both streams, having passed the separation volume, are discharged into the atmosphere through an exhaust pipe located in the center. An analysis of the outlet gas showed that the concentration of dust in the gas decreased to OD g / nm. The degree of dust extraction was 98.2%. Example 2. Nitrous gas in the amount of 900 at a temperature of 30 ° C, containing a spray of nitric acid in the amount of 1.75 g / nm, served under an overpressure of 450 mm water. Art. to the separation zone, where they are divided into two streams: the internal stream with a volume of 630 is twisted clockwise, and the external stream with a volume of 270 is counterclockwise. Both streams having passed the separation volume are removed to the atmosphere. An analysis of the outlet gas showed that the content of nitric acid aerosols decreased to 0.04 g / nm. The recovery rate was 95.6%. Claims The method of centrifugal gas cleaning, including the gas supply to the apparatus by two rotating external and internal flows moving progressively down, characterized in that, in order to intensify the cleaning process, the flows are fed the opposite direction of rotation, and the amount of gas supplied to the external flow is em 10-40% of the total amount of gas to be purified. Sources of information taken into account in the examination 1. Germany patent number 1092281, cl. 50th 3/00, 1953.

2. USSR author's certificate number 413961, cl. B 04 C 5/04, 1972.