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Heating system by utilization of waste heat of blast furnace slag flushing water and method thereof

A blast furnace slag flushing and slag flushing water technology, applied in hot water central heating systems, heating systems, heating methods, etc., can solve the problems of large investment in urban heating network construction, difficult adjustment of heating load, and large station area , to achieve the effects of small footprint, fast filtration speed and low investment cost

Inactive Publication Date: 2013-07-10
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Central heating is mainly provided by large-scale thermal power plants or thermal power companies with steam or hot water as a heat source, and heat is supplied to the community through various heat exchange stations. The construction investment is large, the cycle is long, and there is a matching problem between the power load and the heating load, and the heating load is not easy to adjust; the regional boiler heating is mainly provided by the regional boiler room as the heat source, and the construction of the boiler room, coal yard, and thermal pipelines is required. Investment Large, large station area, boiler discharges a lot of SO 2 , NO X and other harmful gases and CO 2 Greenhouse gases, causing environmental pollution

Method used

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  • Heating system by utilization of waste heat of blast furnace slag flushing water and method thereof
  • Heating system by utilization of waste heat of blast furnace slag flushing water and method thereof
  • Heating system by utilization of waste heat of blast furnace slag flushing water and method thereof

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Effect test

Embodiment 1

[0029] refer to figure 1 and figure 2As shown, the present embodiment is a heating system utilizing waste heat of blast furnace slag flushing water, including a blast furnace slag flushing system 1, a sedimentation tank 2, a water absorption pool 3, a first slurry pump 4, a filter 5, a heat exchanger 6 and The heating pump 7 and the slag flushing system of the blast furnace adopt the slag flushing system used in the existing INBA water slag flushing process. The water inlet of the filter 5 is connected with the water absorption pool 3, and its water outlet is connected with the slag flushing water inlet 5-1 of the filter 5, and the slag flushing water outlet 5-2 of the filter 5 is connected with the first water inlet of the heat exchanger 6 for heating. The secondary heating water outlet of the pump 7 communicates with the second water inlet of the heat exchanger 6 . Among them, the water absorption tank 3 is used for storage and secondary precipitation of the slag washing ...

Embodiment 2

[0042] Different from the above-mentioned embodiment, in this embodiment, the set value of the pressure difference between the upper and lower parts of the fiber bundle filter layer 5-5 is 0.05MPa, the backwash water pressure is 0.4MPa, the backwash time is 20min, and the single fiber bundle The diameter is 20μm, the length is 2m, the porosity is 98%, and the distance between adjacent fibers in the fiber bundle is 15mm.

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Abstract

The invention provides a heating system by the utilization of waste heat of blast furnace slag flushing water and a method thereof, so as to effectively recover waste heat of blast furnace slag flushing water, supply heating to users and achieve the purse of energy saving and emission reduction. The heating system by the utilization of waste heat of blast furnace slag flushing water contains a blast furnace slag flushing system, a sedimentation basin, a water suction pool, a first slag slurry pump, a filter, a heat exchanger and a heating pump. A slag flushing water outlet of the blast furnace slag flushing system communicates with the sedimentation basin, which communicates with the water suction pool. A water inlet of the first slag slurry pump communicates with the water suction pool. The water outlet communicates with a slag flushing water inlet of the filter. A slag flushing water outlet of the filter communicates with a first water inlet of the heat exchanger. A secondary heating water outlet of the heating pump communicates with a secondary water inlet of the heat exchanger. According to the invention, waste heat of blast furnace slag flushing water is fully utilized for heating. Therefore, investment cost is low and recovery period is short. In addition, in comparison with present bunker coal heating, the heating system provided by the invention has advantages of no discharge of gases such as SO2, NOX, CO2 and the like, energy saving and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of sewage filtration, and in particular relates to a system and method for heating by using waste heat of blast furnace slag flushing water. Background technique [0002] At present, my country generally adopts coal-based central heating and regional boiler heating. Central heating is mainly provided by large-scale thermal power plants or thermal power companies with steam or hot water as a heat source, and heat is supplied to the community through various heat exchange stations. The construction investment is large, the cycle is long, and there is a matching problem between the power load and the heating load, and the heating load is not easy to adjust; the regional boiler heating is mainly provided by the regional boiler room as the heat source, and boiler rooms, coal yards, thermal pipelines, etc. need to be constructed. Investment Large, large station area, boiler discharges a lot of SO 2 , NO X and o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B3/08C21B7/14F24D3/04
CPCC21B2400/024C21B2400/072C21B2400/08Y02P10/20
Inventor 仪垂杰周扬民
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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