CN104949331A

CN104949331A - Electric heater for heating cold hydrogenated silica powder-containing fluid

Info

Publication number: CN104949331A
Application number: CN201510421901.2A
Authority: CN
Inventors: 彭美锦; 经文彪
Original assignee: Jiangsu Cirulate Electrothermal Equipment Co Ltd
Current assignee: Jiangsu Cirulate Electrothermal Equipment Co Ltd
Priority date: 2015-07-19
Filing date: 2015-07-19
Publication date: 2015-09-30

Abstract

The invention provides an electric heater for heating a cold hydrogenated silica powder-containing fluid. The electric heater comprises a hearth; a coil pipe is arranged in the hearth; an electric heating device is arranged on the circumference of the coil pipe. The electric heater has the advantages that the formation of a protective layer on the surface of an electric heating tube is prevented effectively; the internal heat transmission efficiency of the electric heating tube is improved; the electric heating tube is prevented from being burnt out, so as to effectively avoid the damage of the whole heater.

Description

A kind of cold hydrogenation silicon powder-containing electric heater for fluid

Technical field

The present invention relates to the technical field of electric heater, particularly one cold hydrogenation silicon powder-containing electric heater for fluid.

Background technology

Existing cold hydrogenization of silicon tetrachloride electric heater adopts electrothermal tube heating, and containing a large amount of silica flour in air-flow, in heating process, silicon powder deposit is on electrothermal tube surface; form thermal-protective coating; in the course of time not out, internal temperature is more and more higher for the heat transfer of electrothermal tube inside, until burn out electrothermal tube.

Summary of the invention

For the deficiency that prior art exists; the invention provides a kind of cold hydrogenation silicon powder-containing fluid heating electric heater, effectively prevent electrothermal tube surface from forming protective layer, ensure that the heat conduction efficiency of electrothermal tube inside; prevent burning out of electrothermal tube, thus avoid the damage of whole heater.

To achieve these goals, the present invention realizes by the following technical solutions: a kind of cold hydrogenation silicon powder-containing fluid heating electric heater, it comprises burner hearth, is provided with coil pipe in burner hearth, and described coil pipe periphery is provided with electric heater unit.

It improves further and is: burner hearth comprises upper furnace and lower hearth, and upper furnace and described lower hearth removably connect; Electric heater unit is heating wire; Be provided with multilayer coil pipe in burner hearth, between multilayer coil pipe, be communicated with formation import, an outlet.

In said structure of the present invention; owing to being provided with coil pipe in burner hearth; coil pipe periphery is provided with electric heater unit; cold hydrogenation silicon powder-containing fluid passes in coil pipe; by the electric heater unit heating outside coil pipe; effectively prevent electrothermal tube surface from forming protective layer, avoid the damage of burner hearth, thus avoid the damage of whole heater.

Accompanying drawing explanation

Fig. 1 is the present invention's cold hydrogenation silicon powder-containing fluid heating electric heater front view;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the top view of Fig. 1.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention's cold hydrogenation silicon powder-containing fluid heating electric heater is further described:

See Fig. 1, Fig. 2 and Fig. 3, a kind of cold hydrogenation silicon powder-containing electric heater for fluid, it comprises burner hearth 1, burner hearth 1 comprises upper furnace 1a and lower hearth 1b, in burner hearth, 1 is provided with three layers of coil pipe 2, formation import 3 is communicated with between three layers of coil pipe, an outlet 4, three layers of coil pipe 2 periphery are provided with electricity and add silk 5, the fluids such as silicon powder-containing silicon tetrachloride or hydrogen walk coil pipe 2 tube side, shell side thermal field is arranged in outside, effectively prevent silicon from forming protective layer on electrothermal tube surface, avoid the damage of burner hearth, thus avoid the damage of whole heater, thorax comprises upper furnace and lower hearth, thermal field is divided two-layer up and down, can conveniently take apart, coil pipe is changed.

Burner hearth 1 periphery is provided with heat-insulation layer 6, prevents heat from leaking, improves the efficiency of heating surface.

Be provided with thermocouple 7 in burner hearth 1, realize the measurement to temperature in burner hearth.

In above-described embodiment, the mounting means of heating wire has multiple, can be arranged on coil pipe periphery, also can layered arrangement, as long as realizing the heating of hydrogenation silicon powder-containing fluid cold in coil pipe is all protection scope of the present invention.

The number of plies of coil pipe also can be arranged according to the space size of burner hearth.

Silicon powder deposit, in coil pipe, after a period of time, as fire box temperature raises obviously, represents that silica flour thickness seriously hinders heat transfer, opens burner hearth the first half, taken out by this section of coil pipe and change, and puts into or for subsequent use after clearing up.

Silicon powder deposit is in coil pipe, and judge that deposit thickness is by fire box temperature, easy to operate, burner hearth heating part is unaffected, and the life-span is long, solves cold hydrogenation silicon powder-containing fluid heating problem again with lower cost.

Judge whether this cleaning silica flour because this invention have employed by fire box temperature, burner hearth is unaffected, obtains cold hydrogenation silicon powder-containing fluid heating problem with lower cost.

Claims

1. a cold hydrogenation silicon powder-containing fluid heating electric heater, it comprises burner hearth, it is characterized in that: be provided with coil pipe in described burner hearth, and described coil pipe periphery is provided with electric heater unit.

2. one according to claim 1 cold hydrogenation silicon powder-containing fluid heating electric heater, it is characterized in that, described burner hearth comprises upper furnace and lower hearth, and described upper furnace and described lower hearth removably connect.

3. one according to claim 1 cold hydrogenation silicon powder-containing fluid heating electric heater, is characterized in that, described electric heater unit is heating wire.

4., according to the arbitrary described one cold hydrogenation silicon powder-containing fluid heating electric heater of claim 1-3, it is characterized in that, in described burner hearth, be provided with multilayer coil pipe, between described multilayer coil pipe, be communicated with formation import, an outlet.