Dry-process cement rotary kiln discrete air channel structure
Technical field
The utility model relates to a kind of building equipment, especially a kind of dry-process cement rotary kiln, specifically a kind of dry-process cement rotary kiln discrete air channel structure.
Background technology
As everyone knows, for energy savings, the heat that dry-process cement rotary kiln generally utilizes cooler to produce is sent in dore furnace and the rotary kiln, and the high-temperature gas part after the cooler exchange is gone into rotary kiln (secondary wind), and another part is gone into tertiary-air pipe to dore furnace.For the heat that cooler is produced can be sent in the corresponding wind channels, conventional practice all is to set big wicket cover, as shown in Figure 1, such shortcoming is that kiln wind and dore furnace wind are can not the interface on amount clear, often guarantee the amount and the temperature value of rotary kiln high-temperature gas, but do not guarantee the amount and the temperature value of dore furnace high-temperature gas, cause resolution ratio to descend, the decline of whole system output, energy consumption are risen.This structure has also increased manufacturing cost greatly simultaneously, the efficient cooler of present the 4th generation low voltage control air-flow, the high-temperature gas of temperature value and the amount of fully giving security, just there is no need a secondary wind and tertiary air and be mixed in extraction in the marquee, if continue traditional way, not only can't guarantee the uniform distribution of heat, also increase the cost of manufacturing, maintenance, be necessary existing air channel structure is improved.
Summary of the invention
The purpose of this utility model is that the heat distribution that causes at the shared big wicket of existing secondary wind and tertiary air road is irregular, the phase mutual interference is big, make and the high problem of maintenance cost, design a kind of secondary wind and tertiary air air intake passage dry-process cement rotary kiln discrete separate, that need not big wicket air channel structure.
The technical solution of the utility model is:
A kind of dry-process cement rotary kiln discrete air channel structure, it comprises secondary air duct 1 and tertiary air road 2, the air inlet that it is characterized in that described tertiary air road 2 is connected with the low temperature air outlet 4 of cooler 3 middle front parts, and the air inlet of described secondary air duct 1 is connected with the high temperature air outlet 5 of cooler front portion.
The leaving air temp of described low temperature air outlet 4 is not less than 900 ℃, and the leaving air temp of described high temperature air outlet 5 is not less than 1050 ℃.
The beneficial effects of the utility model:
The utility model has made full use of the controlled characteristics of air-flow of existing cooler, respectively from different position directly introduce temperature required high-temperature gas corresponding wind channels with tertiary air to the requirement of temperature value according to secondary wind, it is even not only to have temperature, and removed traditional big wicket for a short time, make manufacturing cost and maintenance cost reduce greatly.
Specially other opening extracts high-temperature gas of going into dore furnace for three times of the present utility model from cooler top.Make secondary wind go into kiln and tertiary air and go into stove and be independent of each other, mutually noninterfere all obtains higher temperature (secondary wind 〉=1050 °, tertiary air 〉=900 °) and sufficient air quantity.To guaranteeing that full kiln system has the heating power of an optimization to distribute and played important guarantee effect.
The utility model is simple in structure, and is easily manufactured, and cost is low.
Description of drawings
Fig. 1 is the secondary wind of existing dry-process cement rotary kiln and the air channel structure schematic diagram of tertiary air.
Fig. 2 is the secondary wind of dry-process cement rotary kiln of the present utility model and the air channel structure schematic diagram of tertiary air.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 2.
A kind of dry-process cement rotary kiln discrete air channel structure, it comprises secondary air duct 1 and tertiary air road 2, the air inlet in described tertiary air road 2 is connected with the low temperature air outlet 4 of cooler 3 middle front parts, and the air inlet of described secondary air duct 1 is connected with the high temperature air outlet 5 of cooler front portion.As can be seen from Figure 2, other opening extracts high-temperature gas (tertiary air) of going into dore furnace for three times of the present utility model from cooler top.This just makes secondary wind go into kiln 6 and tertiary air to go into stove 7 and be independent of each other, and mutually noninterfere all obtains higher temperature (secondary wind 〉=1050 ℃, tertiary air 〉=900 ℃) and sufficient air quantity.To guaranteeing that full kiln system has the heating power of an optimization to distribute and played important guarantee effect.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.