CN102730694A

CN102730694A - Reduction furnace bell gas curtain heat-insulating and energy-saving structure

Info

Publication number: CN102730694A
Application number: CN2012101901379A
Authority: CN
Inventors: 赵建; 盛斌; 刘美芬; 王中华; 徐辰盛
Original assignee: SHUANGLIANG NEW ENERGY EQUIPMENT CO Ltd
Current assignee: SHUANGLIANG NEW ENERGY EQUIPMENT CO Ltd
Priority date: 2012-06-11
Filing date: 2012-06-11
Publication date: 2012-10-17

Abstract

The invention relates to a reduction furnace bell gas curtain heat-insulating and energy-saving structure. The structure comprises a reduction furnace bell body (1), a bell flange (2), a buffering half-loop tube (3), a gas inlet pipe (4), and a tail gas outlet pipe (5). The gas inlet pipe (4) is arranged on the outer side of the bell flange (2). The buffering half-loop tube (3) is arranged on the inner side of the bell flange (2). A circle of small holes are arranged on the upper part of the buffering half-loop tube (3). According to the invention, a gas curtain heat-insulating and energy-saving structure is adopted, such that radiant heat brought away by bell cooling water is effectively reduced, the heat is concentrated in the bell inner cavity, such that the energy consumption of the reduction furnace is effectively reduced.

Description

Reduction furnace bell jar gas curtain isolation energy-saving structure

Technical field

The present invention relates to polycrystalline silicon reducing furnace, be specifically related to a kind of structure of polysilicon industry reduction furnace bell jar gas curtain heat-insulating and energy-saving.

Background technology

Along with the Europe debt crisis and U.S. polysilicon to China " two anti-case "; Present Chinese polysilicon photovoltaic industry has got into severe winter again; Present international polysilicon price landing to 20$/kg; The production cost of domestic polysilicon has been approached even be lower than to this price, and a lot of enterprises have begun to stop production, technological transformation, and cost efficiency is extremely urgent.

The production of polysilicon cost mainly is a power consumption cost, and the reduction power consumption has accounted for 50% of total power consumption, so reduce the power consumption that the reduction furnace power consumption can obviously reduce production of polysilicon.

And reduction furnace is when producing polysilicon, and its reaction energy needed is less than 5% of reduction power consumption, and most energy consumptions all is that the water coolant that is reduced stove is taken away with reduction tail gas.

Summary of the invention

The objective of the invention is to overcome above-mentioned deficiency, provide a kind of and can effectively reduce the reduction furnace bell jar gas curtain isolation energy-saving structure that the bell jar water coolant is taken away heat.

The objective of the invention is to realize like this: a kind of reduction furnace bell jar gas curtain isolation energy-saving structure; Said structure comprises reduction furnace bell jar body, bell jar flange, buffering semi-ring pipe, gas inlet tube and tail gas outlet pipe; Gas inlet tube is arranged on the bell jar flange outside; It is inboard that buffering semi-ring pipe is arranged on the bell jar flange, and buffering semi-ring pipe top is provided with a circle aperture.

Mixed gas gets into buffering semi-ring pipe from the gas inlet tube in the bell jar flange outside, and the circle aperture on buffering semi-ring pipe rushes at the bell jar top then, and forms gas curtain one in the bell jar inner wall surface; The thermal radiation that this road gas curtain can effectively deaden silicon rod and distributed concentrates on heat in the stove, thereby cuts down the consumption of energy; Gas on the gas curtain that was heated by silicon rod; Turn back at the bell jar top, after the silicon rod surface reaction, finally flow out reduction furnace from the tail gas outlet pipe.

The invention has the beneficial effects as follows:

The present invention has adopted bell jar gas curtain isolation energy-saving structure, forms one deck gas curtain thermal isolation film at reduction furnace bell jar inwall on the structure, effectively reduces the heat that the bell jar water coolant is taken away, thereby reduces the reduction furnace energy consumption.

Description of drawings

Fig. 1 is a reduction furnace bell jar gas curtain isolation energy-saving structure synoptic diagram of the present invention.

Reference numeral among the figure:

Reduction furnace bell jar body 1, bell jar flange 2, buffering semi-ring pipe 3, gas inlet tube 4, tail gas outlet pipe 5, silicon rod 6, spacer 7.

Embodiment

Referring to Fig. 1, Fig. 1 is a reduction furnace bell jar gas curtain isolation energy-saving structure synoptic diagram of the present invention.As can beappreciated from fig. 1; Reduction furnace bell jar gas curtain isolation energy-saving structure of the present invention; Comprise reduction furnace bell jar body 1, bell jar flange 2, buffering semi-ring pipe 3, gas inlet tube 4 and tail gas outlet pipe 5; Gas inlet tube 4 is arranged on bell jar flange 2 outsides, and buffering semi-ring pipe 3 is arranged on bell jar flange 2 inboards, and buffering semi-ring pipe 3 tops are provided with a circle aperture.

Claims

1. reduction furnace bell jar gas curtain isolation energy-saving structure; It is characterized in that said structure comprises reduction furnace bell jar body (1), bell jar flange (2), buffering semi-ring pipe (3), gas inlet tube (4) and tail gas outlet pipe (5); Gas inlet tube (4) is arranged on bell jar flange (2) outside; Buffering semi-ring pipe (3) is arranged on bell jar flange (2) inboard, and buffering semi-ring pipe (3) top is provided with a circle aperture.