CN102721276A - Energy-saving transformation system for ceramic kiln - Google Patents

Abstract

The invention discloses an energy-saving transformation system for a ceramic kiln. The hearth of the furnace body is sequentially divided into a preheating zone, a sintering zone and a cooling zone. A number of burners are arranged on the sintering zone; Connect, use the high-temperature air in the pre-tropical zone to generate power; the exhaust gas from the power generation device is introduced into the furnace of the pre-tropical zone. The invention has the following beneficial effects: (1) make full use of the high-temperature package taste energy in the preheating zone, and generate power for other equipment without affecting production, which can achieve the optimal and rational use of resources; (2) fully Use the exhaust gas generated by the power generation device and the exhaust gas in the cooling zone to heat the air for combustion support, so as to achieve the purpose of effectively recycling the heat source; (3) It can be improved on the basis of existing equipment without changing the main structure of the existing equipment, and the realization is very simple; (4) ) can save energy to a great extent, reduce heat loss and environmental pollution.

Description

Ceramic Kiln Energy Saving Transformation System

technical field

The invention relates to an energy-saving system for a kiln, in particular to an energy-saving transformation system for an energy-saving ceramic kiln.

Background technique

The existing ceramic kiln system includes preheating zone, sintering zone and cooling zone. The temperature in the preheating zone can reach over 1000 degrees, but in the ceramic production process, the preheating temperature required for waste heat only needs to be about 300 degrees. A large amount of high-grade energy is thus wasted in the preheating zone. In addition, the combustion air provided by the combustion lance in the sintering zone needs to be preheated, so as to achieve a good combustion effect and reduce the emission of pollutants. However, special equipment and energy consumption are required for air preheating. Therefore, the existing ceramic kiln system has deficiencies such as high energy consumption and low efficiency due to imperfect structure.

Contents of the invention

The purpose of the present invention is to address the shortcomings of the above-mentioned prior art, and provide a ceramic kiln structure based on the existing ceramic kiln structure, so as to utilize the redundant high-grade energy in it, and can effectively use its own exhaust heat for preheating. Air-burning ceramic kiln energy-saving retrofit system.

The present invention is realized in the following way: in the ceramic kiln energy-saving transformation system, the hearth of the furnace body is successively divided into a preheating zone, a sintering zone and a cooling zone, and several burners are arranged on the sintering zone; the preheating zone and the The power generation device is connected, and the high-temperature air in the pre-tropical zone is used for power generation; the flue gas discharged from the power-generation device is introduced into the furnace of the pre-tropical zone, so that the high-grade energy with high temperature in the pre-tropical zone can be effectively used, but it will not affect the ceramic kiln production.

A number of retaining walls are arranged alternately in the furnace of the preheating zone to prolong the air traveling process in the preheating zone and improve the effect of low-temperature waste heat.

A jacket is installed on the outer wall of the furnace of the preheating zone, the jacket is connected with the hot air pipe, and the inlet fan is connected to the jacket for introducing air.

The furnace of the cooling zone is provided with a first air induction pipe connected to the furnace of the preheating zone, which is used to use the waste heat air of the cooling zone to supplement the shortage of the preheating zone air, and achieve the purpose of fully utilizing the waste heat to save energy .

A heat exchanger is arranged outside the furnace of the cooling zone, and the heat exchanger is connected and communicated with the hot air pipe, and the heat exchanger is connected and communicated with the cooling zone through the second air induction pipe.

The flue gas from the power generation device is provided with a branch pipeline to pass through the mixer and then connected to the heat exchanger to provide part of the hot air for the heat exchanger.

A barrier is provided between the sintering zone and the cooling zone for maintaining the temperature in the sintering zone and improving the sintering effect.

Compared with the prior art, the present invention has the following beneficial effects: (1) Make full use of the high temperature package taste energy in the preheating zone, and generate electricity for use by other equipment without affecting production, so as to achieve resource optimization Reasonable use; (2) Make full use of the exhaust gas produced by the power generation device and the exhaust gas of the cooling zone to heat the air for combustion, and achieve the purpose of effectively recycling the heat source; (3) It can be improved on the basis of existing equipment without changing the main structure of the existing equipment , the implementation is very simple; (4) It can save energy to a great extent, reduce heat loss and environmental pollution.

Description of drawings

Fig. 1 is a structural schematic diagram of the ceramic kiln energy-saving transformation system of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Ceramic kiln energy-saving transformation system, as shown in Figure 1, the hearth of the furnace body is divided into a preheating zone 3, a sintering zone 13 and a cooling zone 9 in turn, the sintering zone 13 is provided with a number of burners for sintering 6. The furnace of the preheating zone 3 is connected to a power generation device 12, and the power generation device 12 uses the high-temperature air in the preheating zone 3 to generate electricity, and the exhaust gas from the power generating device 12 is introduced into the preheating zone 3 of the ceramic kiln. In the furnace, this can effectively use the high-grade energy of the preheating zone, but it will not affect the production of the ceramic kiln. A plurality of retaining walls 10 are arranged alternately in the preheating zone 3 to prolong the air traveling process in the preheating zone and improve the effect of low temperature preheating.

The outer wall of the furnace of the preheating zone 3 is equipped with a jacket 2, the jacket 2 is connected with the hot air pipe 5 through the communication pipe 4, and the fan 1 is connected on the jacket 2 for introducing air, and using the furnace The heat from the outer wall is used for heating to support combustion. The cooling zone 9 is provided with a first air induction duct 18 connected to the preheating zone 3 in the furnace, which is used to use the waste heat air in the cooling zone 9 to supplement the air shortage of the preheating zone 3 and to achieve the purpose of fully utilizing the waste heat , to save energy.

A heat exchanger 8 is arranged outside the furnace of the cooling belt 9, and the heat exchanger 8 is connected to the hot air pipe 5, and the heat exchanger 8 is connected to the cooling belt 9 through a second air-introduction duct 19. The inside of the furnace is connected and communicated, and is used for referencing the waste heat air in the cooling zone 9 for combustion support. The cooling zone is provided with an introduction fan 15, which is used to introduce air into the cooling zone 9 for mixing with the waste heat air, and then export it to the heat exchanger 8 to prevent the negative pressure of the cooling zone 9 from causing smoke Flow too fast. A blocking portion 16 is provided between the sintering belt 13 and the cooling belt 9 for maintaining the temperature in the sintering belt 13 to improve the sintering effect. The flue gas from the power generation device 12 is provided with a branch pipeline 7 and connected to the heat exchanger 8 after passing through the mixer 14 to provide part of the hot air for the heat exchanger 8 . The preheating belt 3 can be drawn out through the relatively low-temperature air at the inlet of the pipeline for connecting with the drying device 17 . In order to make full use of the thermal energy in the pre-tropical zone 3, the purpose of multifunctional utilization of thermal energy is achieved and resources are saved. Wherein, in the hearth, the pipeline for leading out air is connected with the exhaust fan, and in order to achieve the pressure balance in the hearth, a number of inlet fans 15 are arranged in the hearth for introducing air. The hot air pipe 5 is provided with an automatic control valve so that the fuel and the combustion-supporting air can achieve the best combustion mixing ratio.

The above implementation examples are not limitations of the present invention, and those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the present invention, so all equivalent technical solutions should also belong to The category of the present invention, the patent protection scope of the present invention should be defined by each claim.

Claims (7)

1. ceramic kiln reducing energy consumption system, it is characterized in that: be divided into preheating zone, sintering belt and salband in the burner hearth of its body of heater successively, said sintering belt is provided with some burners; Said preheating zone is connected with TRT, quotes that high temperature air generates electricity in the preheating zone; Said TRT discharging flue gas imports in the burner hearth of preheating zone.

2. according to the described ceramic kiln reducing energy consumption of claim 1 system, it is characterized in that: alternately in the burner hearth of said preheating zone be provided with some barricades, be used to make the air walking flow process in the preheating zone to be extended.

3. according to the described ceramic kiln reducing energy consumption of claim 1 system, it is characterized in that: the burner hearth lateral wall of said preheating zone is equipped with chuck, and said chuck is connected with warm-air pipe, connects on the said chuck to import blower fan.

4. according to the described ceramic kiln reducing energy consumption of claim 3 system, it is characterized in that: the burner hearth of said salband is provided with the first air inducing pipeline and is connected with said preheating zone burner hearth is interior.

5. according to the described ceramic kiln reducing energy consumption of claim 4 system; It is characterized in that: the burner hearth of said salband is outside equipped with heat exchanger; Said heat exchanger is connected with said warm-air pipe and communicates, and said heat exchanger is connected with said salband through the second air inducing pipeline and communicates.

6. according to the described ceramic kiln reducing energy consumption of claim 1 system, it is characterized in that: the flue gas that said TRT comes out is provided with branch line and is connected with heat exchanger through behind the blender.

7. according to the described ceramic kiln reducing energy consumption of claim 1 system, it is characterized in that: be provided with stop part between said sintering belt and the said salband.

Images