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Sintering steam dragging system and method

A technology of steam traction and steam boiler, which is applied in the direction of steam engine device, non-variable pump, process efficiency improvement, etc. It can solve the problems of waste of resources and high energy consumption, and achieve the effect of reducing energy consumption

Pending Publication Date: 2022-07-08
BERIS ENG & RES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional sintering waste heat utilization method is that after the sintering waste heat generates electricity, the electric energy is incorporated into the internal power grid of the factory, and the sintering fan is then powered from the power grid to drive the fan to work. This method consumes a lot of energy and causes a lot of waste of resources. To improve the settings to better utilize the energy of the main steam and further reduce energy consumption is a technical problem that needs to be solved

Method used

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  • Sintering steam dragging system and method
  • Sintering steam dragging system and method
  • Sintering steam dragging system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] This embodiment provides a sintering steam drag system, including: a plurality of main exhaust fan structures and a waste heat boiler, the main shaft fan structure includes a steam turbine, a variable speed clutch, a synchronous motor and a sintering main shaft fan connected in sequence, and the steam turbine passes through The variable speed clutch is connected with the main shaft fan, and adopts the overrunning clutch technology to realize the combination and separation of the main exhaust fan; the steam turbine of each main shaft fan structure is connected to the waste heat boiler through the waste heat main steam pipeline;

[0029] When the speed of the low-speed shaft of the variable speed clutch is equal to the speed of the sintered main fan, the variable speed clutch connects the steam turbine and the fan, so that the steam turbine drives the main exhaust fan, and the synchronous motor is adjusted by the excitation system, and the output power gradually decreases t...

Embodiment approach

[0031] As an embodiment, the steam turbine includes a waste heat steam source, a steam turbine high-pressure cylinder, a steam turbine low-pressure cylinder, a surface heat exchanger, a generator, and a condenser or a steam exhaust device. The steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder are connected to the power generation The waste heat steam source is provided by the waste heat boiler through the waste heat main steam pipeline. The waste heat steam source is divided into two paths, one of which is the main steam a is connected to the high pressure cylinder of the steam turbine, and the other main steam b is connected to the surface heat exchanger. The exhaust steam of the high-pressure cylinder of the steam turbine is connected to the surface heat exchanger through a pipeline, and the exhaust steam c of the high-pressure cylinder of the steam turbine and the main steam b conduct heat exchange in the surface heat exchanger. The steam outle...

Embodiment 2

[0040] The present embodiment provides a working method of a sintered steam drag system, including:

[0041] The high temperature steam generated by the waste heat boiler is transported to the steam turbine through the waste heat main steam pipeline and drives the steam turbine;

[0042] After the steam turbine drives the speed change clutch to decelerate, when the speed of the low speed shaft of the speed change clutch is equal to the speed of the sintered main fan, the speed change clutch connects the steam turbine and the fan, so that the steam turbine drives the main exhaust fan;

[0043] The excitation system of the synchronous motor is adjusted, so that the output power is gradually reduced to achieve the purpose of energy saving; at this time, the energy required by the main exhaust fan mainly comes from the steam turbine, and the insufficient part is compensated by the synchronous motor.

[0044] A plurality of main exhaust fan structures and waste heat boilers, the ma...

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Abstract

The invention provides a sintering steam dragging system and method.The sintering steam dragging system comprises a waste heat steam boiler and a plurality of main exhaust fan structures, each main shaft fan structure comprises a steam turbine, a variable speed clutch, a synchronous motor and a sintering main shaft fan which are sequentially connected, and the steam turbine is connected with the main shaft fan through the variable speed clutch; combination and separation with the main exhaust fan are realized by adopting an overrunning clutch technology; the steam turbine of each main shaft fan structure is communicated with the waste heat steam boiler through a waste heat main steam pipeline; a steam turbine directly drives a fan to reduce secondary conversion of energy after waste heat power generation, meanwhile, a coaxial motor is used as a compensation machine and a starting machine, and the motor is used for compensation and standby for the part with insufficient waste heat steam energy; steam distribution of the double-main-exhaust-fan system is reasonably controlled, energy of main steam can be better utilized, and energy consumption is further reduced.

Description

technical field [0001] The invention belongs to the technical field of waste heat power generation, and in particular relates to a sintering steam drag system and method. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Sintering project is the most energy-intensive link in modern steel production, mainly consuming sintering fuel coal and a large amount of electricity. The sintering main exhaust fan is the electrical equipment with the largest electric energy consumption in the whole sintering production. The traditional driving method of the fan is the direct driving of the motor. As the energy-saving production requirements of the sintering machine become more and more strict, the utilization factor of the sintering machine also increases, and the thicker material layer requires the power of the main exhaust fan of the sintering machine ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K25/14F01K11/02F01K13/00F01D15/08F01D15/12F04D25/04
CPCF01K25/14F01K11/02F01K13/00F01D15/08F01D15/12F04D25/04Y02P10/25
Inventor 张建强王帅
Owner BERIS ENG & RES CORP
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