Steam diffusing and recycling system of built-in sintering large flue waste heat boiler

Abstract

The utility model relates to a steam diffusing and recycling system of a built-in sintering large flue waste heat boiler, which comprises a built-in large flue waste heat boiler, a built-in large flue waste heat boiler drum, a steam organic working medium Rankine cycle power generation device, a condensate water tank, a condensate water pump, a first electric valve, a second electric valve, a third electric valve and a fourth electric valve. The diffusion pipeline is provided with a first electric valve, the diffusion pipeline behind the first electric valve is provided with a steam branch pipeline, the steam branch pipeline is sequentially provided with a second electric valve and a steam organic working medium Rankine cycle power generation device, and a condensed water outlet of the steam organic working medium Rankine cycle power generation device is connected with a condensed water tank. The system has the advantages that steam diffusion loss is effectively avoided, water consumption of the system is saved, noise and environmental pollution are reduced, and the generated electric energy can generate considerable economic benefits.

Description

TECHNICAL FIELD

[0001] The utility model relates to built-in large flue waste heat boiler steam diffusion recovery technical field, especially to a kind of built-in sintering large flue waste heat boiler's steam diffusion recovery system. BACKGROUND

[0002] Built-in sintering large flue waste heat boiler has high heat exchange efficiency, small footprint, and does not need to set up ash removal device, and is widely used. The built-in sintering large flue waste heat boiler is usually built together with the sintering main line, and the steam produced by the large flue is usually sent to the waste heat utilization system and the production steam. The large flue waste heat system is usually built one to two months later than the sintering main line, and the steam cannot be transported after being put into operation, and can only be diffused.

[0003] If the built-in large flue waste heat boiler is always dry and burned without water when the sintering main line is built and the large flue waste heat system is not built, the equipment will be damaged. If the boiler feed water is introduced, the steam diffusion water consumption is huge. According to the calculation of a 10t / h boiler diffusion for two months, the water consumption can reach 14400t, which will cause great waste, especially when the system water source is desalted water, the desalted water system needs to be operated all the time, and the cost is more expensive. After the large flue waste heat system is put into operation, due to the unstable operation of the waste heat system and the production steam system, the built-in large flue waste heat boiler produces steam diffusion frequently, and the steam diffusion process produces a lot of noise and a large amount of exhaust steam, which has a great impact on environmental protection. UTILITY MODEL CONTENTS

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a steam diffusion recovery system of built-in sintering large flue waste heat boiler, which utilizes steam branch pipeline arranged in the diffusion pipeline, steam branch pipeline is provided with steam organic working medium rankine cycle power generation device, and the condensate produced after power generation is sent into the boiler feed water main pipe by condensate pump to enter the built-in large flue waste heat boiler again for recycling, which effectively avoids the steam diffusion loss caused by the steam produced by the large flue boiler when it cannot be normally connected to the grid, saves the water consumption of the system, reduces the noise and environmental pollution, and the produced electric energy can produce considerable economic benefits.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a kind of built-in sintering large flue waste heat boiler's steam emission recovery system, including built-in large flue waste heat boiler, built-in large flue waste heat boiler drum, steam organic working medium rankine cycle power generation device, condensate tank, condensate pump, 1 electric valve, 2 electric valve, 3 electric valve and 4 electric valve, the built-in large flue waste heat boiler is connected built-in large flue waste heat boiler drum, the drum outlet is connected emission pipeline and outer sending steam pipeline, the emission pipeline is provided with 1 electric valve, 1 electric valve is provided with steam branch pipeline after emission pipeline, 2 electric valve and steam organic working medium rankine cycle power generation device are sequentially provided on the steam branch pipeline, steam organic working medium rankine cycle power generation device condensate outlet is connected condensate tank, and condensate tank is connected boiler feed water main pipe by condensate pump, and 3 electric valve is provided on the outer sending steam pipeline.

[0007] Further, the built-in sintering large flue waste heat boiler is arranged in the large flue.

[0008] Further, the emission pipeline is provided with 4 electric valve after steam branch pipeline.

[0009] Compared with the prior art, the utility model has the advantages that:

[0010] 1) when large flue waste heat steam cannot be connected to the grid, steam is generated through steam branch pipeline, and the condensate after steam generation is recycled in the built-in large flue waste heat boiler, thereby avoiding steam emission loss when steam generated by the large flue boiler cannot be normally connected to the grid, recycling the condensate, recycling the steam, improving steam utilization rate, saving water consumption, saving resource consumption, reducing steam emission, reducing noise and environmental pollution, and the generated electricity can generate considerable economic benefits and improve steam utilization value.

[0011] 2) emission pipeline short-term emission can alleviate unstable steam connection or normal use of organic working medium rankine cycle power generation device during initial investment of large flue waste heat system, prevent damage to large flue waste heat system and emission system, improve utilization rate of large flue waste heat system and emission system, and improve steam emission effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a flow chart of the steam emission recovery system of the built-in sintering large flue waste heat boiler.

[0013] In the figure: 1. built-in large flue waste heat boiler; 2. built-in large flue waste heat boiler drum; 3. steam organic Rankine cycle power generation device; 4. condensate tank; 5. condensate pump; 6. 1# electric valve; 7. 2# electric valve; 8. 3# electric valve; 9. 4# electric valve; 10. bleeder pipe; 11. steam branch pipe; 12. boiler feed water main pipe; 13. steam delivery pipe. DETAILED DESCRIPTION

[0014] The specific embodiment of the utility model will be further described below in combination with the drawings:

[0015] As Figure 1 shown, the working principle of a steam bleeder recovery system of a built-in sintering large flue waste heat boiler: the bleeder pipe 10 provided on the built-in large flue waste heat boiler drum 2 is divided into steam branch pipes 11, the steam branch pipes 11 are provided with steam organic Rankine cycle power generation devices 3, when the steam generated by the built-in large flue waste heat boiler 1 cannot be connected to the grid, the steam passes through the steam organic Rankine cycle power generation devices 3 to generate electricity along the steam branch pipes 11, the condensate of the steam after power generation is connected to the boiler feed water main pipe 12 through the condensate tank 4 and the condensate pump 5, the boiler feed water main pipe is connected to the built-in large flue waste heat boiler 1 through the built-in large flue waste heat boiler drum 2, the condensate of the steam is recycled again, the steam is recycled, resources are saved, energy consumption is reduced, water resources are saved, steam utilization rate is improved, steam bleeder amount is reduced, voice and environmental pollution are reduced, the generated electric energy can produce considerable economic benefits, steam utilization value is improved, the built-in large flue waste heat boiler drum 2 is provided with the bleeder pipe 10, in the case that the organic Rankine cycle power generation device 3 or the large flue waste heat system is unstable, the bleeder pipe 10 can be bleeded for a short time, preventing the steam discharge from adversely affecting the bleeder system or the large flue waste heat system, preventing the bleeder system and the large flue waste heat system from being damaged by steam impact, prolonging the service life of the bleeder system and the large flue waste heat system, improving the utilization rate, and improving the steam bleeder effect.

[0016] As Figure 1As shown, a built-in sintering large flue waste heat boiler steam emission recovery system, including built-in large flue waste heat boiler 1, built-in large flue waste heat boiler drum 2, steam organic Rankine cycle power generation device 3, condensate tank 4, condensate pump 5, 1# electric valve 6, 2# electric valve 7, 3# electric valve 8 and 4# electric valve 9, the built-in large flue waste heat boiler 1 is connected built-in large flue waste heat boiler drum 2, the built-in large flue waste heat boiler drum 2 outlet is connected emission pipeline 10 and outer sending steam pipeline 13, the emission pipeline 10 is provided with 1# electric valve 6, the emission pipeline 10 after 1# electric valve 6 is provided with steam branch pipeline 11, the steam branch pipeline 11 is sequentially provided with 2# electric valve 7 and steam organic Rankine cycle power generation device 3, and the steam organic Rankine cycle power generation device 3 condensate outlet is connected with condensate tank 4, and the condensate tank 4 is connected with boiler feed water main pipe 12 through condensate pump 5, and the outer sending steam pipeline 13 is provided with 3# electric valve 8.

[0017] Further, the built-in sintering large flue waste heat boiler 1 is arranged in the large flue.

[0018] Further, the emission pipeline 10 is provided with 4# electric valve 9 after the steam branch pipeline 11.

[0019] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art in the technical range disclosed by the present application, according to the technical scheme and the conception of the present application, equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A built-in sintering large flue gas waste heat boiler steam emission recovery system, comprising a built-in large flue gas waste heat boiler, a built-in large flue gas waste heat boiler drum, a steam organic working medium Rankine cycle power generation device, a condensate tank, a condensate pump, a 1# electric valve, a 2# electric valve, a 3# electric valve and a 4# electric valve, the built-in large flue gas waste heat boiler is connected with the built-in large flue gas waste heat boiler drum, characterized in that, The steam drum outlet is connected with a diffusion pipeline and an outer steam pipeline, the diffusion pipeline is provided with a 1# electric valve, the diffusion pipeline after the 1# electric valve is provided with a steam branch pipeline, the steam branch pipeline is sequentially provided with a 2# electric valve and a steam organic working medium Rankine cycle power generation device, the steam organic working medium Rankine cycle power generation device is connected with a condensate tank through a condensate outlet, the condensate tank is connected with a boiler feed water main through a condensate pump, and the outer steam pipeline is provided with a 3# electric valve.

2. The steam emission recovery system of a built-in sintering large flue waste heat boiler according to claim 1, characterized in that, The built-in sintering large flue waste heat boiler is arranged in the large flue.

3. The steam emission recovery system of a built-in sintering large flue waste heat boiler according to claim 1, characterized in that, The diffusion pipeline is provided with a 4# electric valve after the steam branch pipeline.

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