SU712606A1

SU712606A1 - Method of operation of convection diaphragm surface of boiler

Info

Publication number: SU712606A1
Application number: SU772553970A
Authority: SU
Inventors: Аркадий Иванович Филимонов; Анатолий Филиппович Гаврилов
Original assignee: Filimonov Arkadij; Gavrilov Anatolij F
Priority date: 1977-12-15
Filing date: 1977-12-15
Publication date: 1980-01-30

Description

Изобретение относится к способам работы конвективных мембранных поверхностей нагрева котлов преимущественно при сжигании сернистых топлив. _£ The invention relates to methods for operating convective membrane heating surfaces of boilers primarily when burning sulfur fuels. _£

Известен способ работы конвективной мембранной поверхности нагрева котла путем подачи в нее теплоносителя, при этом теплоноситель подают одновременно во все трубы поверхности нагрева [1] .A known method of operation of the convective membrane surface of the heating of the boiler by supplying coolant to it, while the coolant is supplied simultaneously to all pipes of the heating surface [1].

Недостатком этого способа является малый срок службы низкотемпературной повер»ности нагрева при сжигании серусодержащих топлив из-за интенсивной сернокислотной коррозии. 'The disadvantage of this method is the short service life of the low-temperature heating surface during the combustion of sulfur-containing fuels due to intense sulfuric acid corrosion. ''

Цель изобретения - увеличение срока службы конвективной низкотемпературной мембранной поверхности· нагрева.The purpose of the invention is to increase the service life of convective low-temperature membrane surface · heating.

Указанная цель достигается тем, что подачу теплоносителя осуществляют в трубы через одну, а после истечения их ресурса подачу теплоносителя осуществляют в смежные трубы.This goal is achieved by the fact that the coolant is supplied to the pipes through one, and after the expiration of their resource, the coolant is supplied to adjacent pipes.

Способ осуществляют следующим образом.The method is as follows.

В трубы конвективной мембранной поверхности нагрева через одну подают теплоноситель с температурой ниже сернокислотной точки росы. Эти трубы З¹ подвергаются интенсивной сернокислотной коррозии. В смежные трубы теплоноситель не подают, температура их остается выше сернокислотной точки росы и они не корродируют. После появления сквозных коррозионных поверхностей в охлаждаемых трубах подачу теплоносителя в них прекращают и осуществляют ее в смежные трубы.In the pipe convective membrane heating surface through one serves a coolant with a temperature below the sulfuric acid dew point. These pipes Z ¹ are subjected to intense sulfuric acid corrosion. The coolant is not supplied to adjacent pipes, their temperature remains above the sulfuric acid dew point and they do not corrode. After the appearance of through corrosion surfaces in the cooled pipes, the flow of coolant into them is stopped and it is carried out in adjacent pipes.

Осуществление предложенного способа позволяет значительно продлить срок службы конвективной мембранной поверхности нагрева котла до ее замены.The implementation of the proposed method can significantly extend the service life of the convective membrane surface of the heating of the boiler until it is replaced.

Claims

The invention relates to methods of operation of convective membrane surfaces of heating boilers predominantly when burning sulfur fuels. The known method of operation of the convective membrane heating surface of the boiler by feeding it with heat carrier l, while the heat carrier is fed once into all pipes of the heating surface l. The disadvantage of this method is the short service life of the low-temperature heating surface when burning sulfur-containing fuels due to intense sulfuric acid corrosion. The purpose of the invention is to increase the service life of the convective low-temperature membrane heating surface. This goal is achieved by the fact that the flow of heat transfer medium is carried out into pipes through one, and after the expiration of their service life, the flow of heat transfer medium is carried out into adjacent pipes. The method is carried out as follows. Through a pipe of a convective membrane heating surface, through one, I deliver a coolant with a temperature below the sulfuric acid dew point. These pipes are subject to intense sulfuric acid corrosion. The coolant is not supplied to adjacent pipes, their temperature remains above the sulfuric acid dew point and they do not corrode. After the occurrence of through-corrosive surfaces in the cooled pipes, the flow of coolant into them is stopped and carried out into adjacent pipes. The implementation of the proposed method allows to significantly extend the service life of the convective membrane heating surface of the boiler prior to its replacement. The invention of the method of operation of the convective membrane heating surface of the boiler by supplying the coolant to it, is necessary in order to increase the life of the coolant into the pipes through one, and after their life has expired, the coolant is supplied to the adjacent pipes. Sources of information taken into account during the examination 1, N. Zhirnov. and others. Peak hot water boilers of high power. 1M., ,, Energie, 1964, p. 133-141.