CN213955347U

CN213955347U - Device for increasing load regulation range of boiler

Info

Publication number: CN213955347U
Application number: CN202022601143.1U
Authority: CN
Inventors: 秦勇; 师少杰; 赵林峰; 谢进军
Original assignee: Shanxi Wex Chemical Technology Co ltd
Current assignee: Shanxi Wex Chemical Technology Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-08-13
Anticipated expiration: 2030-11-11

Abstract

The utility model provides an increase boiler load control range's device, including the horizontal oxidation section of boiler, vertical oxidation section, go up the evaporation section, SCR denitration catalyst, bypass, air-blower, draught fan, chimney, lower evaporation section, valve, fuel gets into the boiler and loops through the evaporation section and heat the deoxidization with evaporation section down after horizontal oxidation section, vertical oxidation section and the air mixture by the air-blower supply fully burn produce the high temperature flue gas after, cause the chimney by the draught fan behind the SCR denitration catalyst again to upper and lower evaporation section department sets up the bypass, the air inlet of bypass communicates with each other with the admission line of last evaporation section, and the gas outlet of bypass communicates with each other with the admission line of SCR denitration catalyst. The utility model discloses the device is guaranteeing under the prerequisite of boiler flue gas emission to reach standard, has increased the load control range of boiler.

Description

Device for increasing load regulation range of boiler

Technical Field

The utility model relates to a boiler load adjustment field, concretely relates to increase device of boiler load control range.

Background

Under the current increasingly severe environment-friendly situation, in response to the call of a manager that 'blue water sky is Jinshan Yinshan', boilers required by the production of chemical enterprises are matched with flue gas desulfurization and denitrification devices to ensure that the flue gas is discharged up to the standard. The activity temperature of the SCR denitration catalyst adopted for flue gas denitration is 300-400 ℃, and the production load of the boiler can be met by more than 70% on the premise of ensuring the flue gas temperature of the denitration catalyst, so that the load regulation range of the boiler is reduced, and the capability of the boiler for coping with different production working conditions is limited. Therefore, on the premise of ensuring that the boiler flue gas reaches the standard and is discharged, the method has great significance for increasing the load regulation range of the boiler.

SUMMERY OF THE UTILITY MODEL

To the defect that prior art exists, the utility model aims at providing an increase boiler load control range's device.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides an increase boiler load control range's device, includes the horizontal oxidation section of boiler, vertical oxidation section, goes up the evaporation zone, SCR denitration catalyst, bypass, air-blower, draught fan, chimney, evaporation zone, valve down, fuel gets into the boiler and passes through the horizontal oxidation section, after vertical oxidation section and the air mixture by the air-blower supply fully burns and produce the high temperature flue gas and loop through evaporation zone and evaporation zone down and heat the deoxidization after, leads to the chimney by the draught fan behind SCR denitration catalyst again, characterized by sets up the bypass at upper and lower evaporation zone, the air inlet of bypass communicates with each other with the admission line of last evaporation zone, and the gas outlet of bypass communicates with each other with the admission line of SCR denitration catalyst.

Furthermore, a valve is arranged on the pipeline of the bypass.

Compared with the prior art, the utility model discloses guaranteeing under the prerequisite that boiler flue gas discharge to reach standard, increased the load control range of boiler, the flue gas temperature of advancing SCR denitration catalyst through the valve adjustment on the control bypass to reach and guarantee the purpose of advancing the SCR temperature under any operating mode.

Description of the drawings:

fig. 1 is a schematic view of the device for increasing the load adjustment range of the boiler of the present invention.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments. This embodiment uses the utility model discloses technical scheme implements as the prerequisite, has given detailed implementation mode and specific operation process, nevertheless the utility model discloses a scope of protection is not limited to this embodiment.

The embodiment of the utility model provides an increase boiler load control range's device, horizontal oxidation section 11 including the boiler, vertical oxidation section 12, go up evaporation section 13, SCR denitration catalyst 14, bypass 15, air-blower 16, draught fan 17, chimney 18, evaporation section 19 down, valve 20, fuel gets into the boiler and passes through horizontal oxidation section 11, vertical oxidation section 12 and the air mixture by the air-blower 16 supply after abundant burning produces the high temperature flue gas and loop through evaporation section 13 and evaporation section 19 down and heat the deoxidization, lead to chimney 18 by draught fan 17 after SCR denitration catalyst 14 again, characterized by sets up bypass 15 at upper and lower evaporation section department, the air inlet of bypass 15 communicates with each other with the admission line of last evaporation section 13, the gas outlet of bypass 15 communicates with each other with the admission line of SCR denitration catalyst 14.

Further, a valve 20 is arranged on the pipeline of the bypass 15, and the temperature of the flue gas entering the SCR denitration catalyst is adjusted by controlling the valve on the bypass, so that the purpose of ensuring the temperature of the SCR is achieved under any working condition.

Claims

1. A device for increasing the load regulation range of a boiler comprises a horizontal oxidation section (11), a vertical oxidation section (12), an upper evaporation section (13), an SCR denitration catalyst (14), a bypass (15), an air blower (16), an induced draft fan (17), a chimney (18), a lower evaporation section (19) and a valve (20) of the boiler, wherein fuel enters the boiler, is mixed with air supplied by the air blower (16) through the horizontal oxidation section (11) and the vertical oxidation section (12), is fully combusted to generate high-temperature flue gas, is sequentially heated and deoxidized through the upper evaporation section (13) and the lower evaporation section (19), passes through the SCR denitration catalyst (14) and is guided to the chimney (18) through the induced draft fan (17), the device is characterized in that a bypass (15) is arranged at the upper evaporation section and the lower evaporation section, the air inlet of the bypass (15) is communicated with the air inlet pipeline of the upper evaporation section (13), and the air outlet of the bypass (15) is communicated with the air inlet pipeline of the SCR denitration catalyst (14).

2. An arrangement for increasing the load regulation range of a boiler according to claim 1, characterized in that a valve (20) is arranged in the pipe of the bypass (15).