Multifunctional rotary kiln production line

Abstract

The utility model discloses a multifunctional rotary kiln production line which comprises a production line body, and the production line body comprises a rotary kiln body, a kiln head, a kiln tail, a kiln tail box, a plurality of groups of reverse surface coolers, a forward surface cooler, a pulse dust collector, a kiln head combustion chamber, a dust collecting chamber, a thermodetector and an induced draft fan. The rotary kiln has the characteristics that the rotary kiln has the functions of a down-flow rotary kiln and a counter-flow rotary kiln at the same time, is independently switched halfway or simultaneously used according to process requirements, can be used as a volatilization kiln for smelting in the metallurgical field, a calcining or incinerating kiln for solid waste or garbage in the environmental protection field and a drying kiln, and meanwhile, the temperature of high-temperature flue gas can be adjusted; the device has multiple functions, meets the treatment process requirements of multiple fields and multiple materials, and is flexible, simple, convenient and energy-saving in investment; the flue gas cooling area is adjusted at any time, and the flue gas flow is controlled by controlling the opening degree of the valve, so that the temperature and the flow of the flue gas entering the pulse dust collector meet the process requirements, the phenomenon that the flue gas is too low to dew or too high to burn out a cloth bag is avoided, and the temperature and the flowing direction of the high-temperature flue gas can be adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental protection technical field, concretely is a kind of multifunctional rotary kiln production line. BACKGROUND

[0002] Burn, material drying, calcination and non-ferrous metal volatilization smelting and multiple fields. At present, it is single-function kiln, that is, for waste incineration, separate construction of waste incineration kiln is used, separate construction of drying kiln is used for material drying, separate construction of calcination kiln is used for calcination, and separate construction of volatilization kiln is used for non-ferrous metal volatilization smelting and recovery. For small institutions, this construction method causes repeated construction of kiln, occupies resources, has large investment and low utilization rate of separate kiln.

[0003] The rotary kiln can fully utilize heat energy, which is conducive to reducing production cost. The materials in the furnace body can be subjected to uniform high-temperature hot air in a short time with rotary motion, so as to achieve the purpose of rapid thermalization and high-efficiency reaction. The rotary kiln has a very wide application field and is suitable for cement production, lime production, metallurgical industry, chemical industry and other fields. With the continuous progress of technology, the rotary kiln is more and more intelligent and automated, which can better adapt to various production requirements. The rotary kiln has high production efficiency and can greatly improve production efficiency. In the rotary kiln, the materials can be subjected to all-around heating and strong hot air convection, so that the materials can complete the sintering and curing process in a short time. The rotary kiln has high running stability and can meet different production requirements. By adjusting the rotation speed, air volume and feeding amount and other parameters, the normal operation of the rotary kiln can be ensured.

[0004] However, the traditional rotary kiln has the following disadvantages:

[0005] (1) Most rotary kilns are counter-flow rotary kilns, that is, the direction of flue gas flow is opposite to the direction of material flow. This process is prone to cause explosion and other accidents when dealing with complex self-ignitable materials, and cannot adjust the concentration and temperature of flue gas, cannot produce in co-current flow, and lacks flexibility.

[0006] (2) Generally, the products or slag produced by calcination, incineration and volatilization smelting in the rotary kiln are discharged at the kiln head and cooled by water quenching or another cooling device, such as a cooling machine or a cooling kiln. A preheater or a preheating furnace is built at the kiln tail to preheat the raw materials. The structure is complex, the power consumption is large, the investment is large, and the operation cost is high. SUMMARY

[0007] The utility model discloses a multifunctional rotary kiln production line to solve the problem that most rotary kilns are countercurrent rotary kilns, i.e. the direction of flue gas flow is opposite to the direction of material flow, which is prone to cause accidents such as explosion when treating complex self-ignitable materials, and cannot adjust the concentration and temperature of flue gas, cannot produce in the same direction, and lacks flexibility.

[0008] To achieve the above object, the utility model provides the following technical scheme.

[0009] A multifunctional rotary kiln production line, comprising a production line body, the production line body comprising a rotary kiln body, a kiln head, a kiln tail, a kiln tail box, a plurality of groups of reverse surface coolers, a plurality of groups of forward surface coolers, a pulse dust collector, a kiln head combustion chamber, a dust collecting chamber, a temperature measuring instrument and an induced draft fan, the rotary kiln body comprising a kiln tail part, the rotary kiln body being connected to one end of the kiln tail box through the kiln tail, the surface of the kiln tail box being connected to the bottom end of one group of reverse surface coolers through a kiln tail box water tank, the lower part of one group of reverse surface coolers being provided with a stock bin, the stock bin being connected to one end of the next group of reverse surface coolers, a plurality of groups of reverse surface coolers being connected in series, the last group of reverse surface coolers being connected to a bidirectional adjusting cooler, and three groups of bidirectional adjusting coolers being respectively linked to three sets of gas outlet pipelines; the rotary kiln body comprising a kiln head part, the kiln head being internally provided with a flue gas collecting pipeline, the rotary kiln body being connected to the end of the kiln head combustion chamber opposite to the kiln head through the flue gas collecting pipeline, the upper part of the kiln head combustion chamber being connected to one end of the dust collecting chamber through a temperature-resistant connecting pipeline, the temperature measuring instrument being installed on the pipe body of the forward surface cooler, the surface of the forward surface cooler being connected to a forward herringbone pipeline, the forward surface cooler being connected to a dust collecting chamber cooling water tank through the forward herringbone pipeline, the forward surface cooler being connected to the bidirectional adjusting cooler through the stock bin, the bidirectional adjusting cooler being connected to the pulse dust collector air inlet of the pulse dust collector through the gas outlet pipeline, and the bidirectional adjusting cooler being connected to the reverse surface cooler through the stock bin at the lower part thereof, the flue gas collecting pipeline being made of temperature-resistant stainless steel or refractory material, the kiln head combustion chamber being connected to the dust collecting chamber through the temperature-resistant connecting pipeline, and the temperature-resistant connecting pipeline being made of high-temperature-resistant stainless steel or refractory material.

[0010] As a preferred technical scheme of the utility model, the bottom of the kiln head combustion chamber is connected to a track, and the kiln head combustion chamber moves on the track through external force.

[0011] As a preferred technical scheme of the utility model, the bottom of the several groups of reverse surface coolers and the several groups of forward surface coolers and the three groups of bidirectional adjusting coolers are respectively provided with a T-shaped pipe valve, and a silo valve is arranged between the silo and the next silo.

[0012] As a preferred technical scheme of the utility model, one end of the pulse dust collector is provided with a pulse dust collector air inlet, the pulse dust collector air inlet of the pulse dust collector is connected with three groups of bidirectional adjusting coolers through three groups of air outlet pipes, and an air outlet pipe valve is arranged in the middle of the air outlet pipe; the two ends of the two groups of bidirectional adjusting coolers on the side are respectively connected with the reverse surface cooler and the forward surface cooler, the other end of the pulse dust collector is provided with a pulse dust collector air outlet, the pulse dust collector air outlet is connected with a clean air pipe, and then connected with a draught fan, and finally connected with a tail gas treatment system.

[0013] As a preferred technical scheme of the utility model, the kiln head is internally provided with a detachable burner, when the rotary kiln body is used for calcining, coal gas or natural gas ignites a fire source to calcine the material in the rotary kiln body through the detachable burner.

[0014] As a preferred technical scheme of the utility model, the lower part of the kiln head combustion chamber is provided with a grate mounting position, when the production line is used for drying material, the detachable grate is mounted on the kiln head combustion chamber, the kiln head combustion chamber uses coal or biomass fuel to burn, high-temperature flue gas enters the rotary kiln body, the wet material from the discharge pipe on the kiln tail is dried, the flue gas from the kiln tail box enters the reverse surface cooler to be cooled, the opening and closing of the valve are controlled, and then the flue gas cooling area and the flue gas temperature entering the pulse dust collector are controlled, so that the flue gas is prevented from being too low to dew or too high to burn the bag.

[0015] As a preferred technical scheme of the utility model, the kiln tail box is internally provided with a discharge pipe fixedly connected, the kiln tail section preheating cylinder body is used as a preheating section of the material entering the rotary kiln body from the discharge pipe, and the material is preheated; the rotary kiln body is in a micro-negative pressure state, air enters the rotary kiln body from the kiln head space to participate in the process, the kiln head section cooling cylinder body is added as mentioned above, the hot material in the kiln directly exchanges heat with the air, the hot air enters the kiln to participate in the process, fuel can be saved, and the temperature condition of the material reaction in the kiln body is optimized; the added kiln tail section preheating cylinder body is heated by the hot air outside, and then the material is heated by the cylinder stainless steel wall heat conduction, so that the material entering the kiln from the discharge pipe is heated from the outside, and meanwhile, the material exchanges heat with the hot flue gas and tail gas in the rotary kiln body in the kiln tail section preheating cylinder body, so that the material is heated in the kiln and outside the kiln.

[0016] As a preferred technical scheme of the utility model, one side of the rotary kiln body is equipped with a kiln head section cooling cylinder body, the other side of the rotary kiln body is equipped with a kiln tail section preheating cylinder body, the outer side of the kiln head section cooling cylinder body and the outer side of the kiln tail section preheating cylinder body are both equipped with a heat preservation jacket, one side of the rotary kiln body is equipped with a blower, one side of the blower is connected with one end of the heat preservation jacket, the outer side of the kiln head section cooling cylinder body is equipped with a hot air collecting ring-shaped sleeve, the outer side of the kiln tail section preheating cylinder body is equipped with a hot air distribution ring-shaped sleeve, the rotary kiln body is increased with the kiln head section cooling cylinder body and the kiln tail section preheating cylinder body in the conventional kiln body design length, the increased cylinder body is made of heat-resistant stainless steel, and the middle section of the rotary kiln body adopts an inner lining refractory brick structure; the kiln head section cooling cylinder body is a cooling section of hot materials in the rotary kiln body, the hot materials in the rotary kiln body are cooled to the process required temperature through the heat exchange of the inner and outer surfaces of the cylinder body, and are directly packaged or enter the next process, the outer cylinder is provided with the heat preservation jacket, the blower blows air into the heat preservation jacket for forced ventilation cooling, the hot air after heat exchange is collected by the hot air collecting ring-shaped sleeve, and the hot air flows to the hot air distribution ring-shaped sleeve of the kiln tail section preheating cylinder body.

[0017] As a preferred technical scheme of the utility model, one side of the kiln tail box is fixedly connected with a kiln tail herringbone connecting pipeline, and the kiln tail box is connected with a kiln tail box water tank through the kiln tail herringbone connecting pipeline.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] 1. The utility model has the characteristics of simultaneously having the functions of the forward flow rotary kiln and the reverse flow rotary kiln, and can be switched or used simultaneously according to the process requirements, can be used as a volatile kiln in the metallurgical field, can be used as a calcination or incineration kiln for solid waste or garbage in the environmental protection field, and can be used as a drying kiln, the high-temperature flue gas temperature can be adjusted, multiple functions are possessed, the process requirements of multiple fields and multiple materials can be met, and energy saving and investment are achieved.

[0020] 2. The utility model can adjust the flue gas cooling area at any time, the size of the flue gas flow is controlled by controlling the opening degree of the valve, so that the flue gas temperature and flow entering the pulse dust collector meet the process requirements, dew condensation or bag burning caused by too low or too high flue gas is avoided, the high-temperature flue gas temperature can be adjusted, and the flue gas flow direction can be adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view of the production line general layout of the utility model;

[0022] Figure 2 It is a top view of the production line general layout of the utility model;

[0023] Figure 3 It is a front view of the waste heat utilization system of the utility model;

[0024] Figure 4 is a top view of the waste heat utilization system of the utility model;

[0025] Figure 5 is a front view of the cooling and dust collecting system of the utility model;

[0026] Figure 6 is a front view of the pulse dust collector component connection of the utility model;

[0027] Figure 7 is a top view of the pulse dust collector component connection of the utility model;

[0028] Figure 8 is a left view of the pulse dust collector component connection of the utility model;

[0029] Figure 9 is a front view of the kiln head part connection of the utility model;

[0030] Figure 10 is a dust collecting flue gas temperature adjusting process using the utility model.

[0031] In the figure: 1, rotary kiln body; 2, kiln head; 3, kiln tail; 4, kiln tail box; 5, reverse surface cooler; 6, forward surface cooler; 7, pulse dust collector; 8, kiln head combustion chamber; 9, dust collecting chamber; 10, temperature measuring instrument; 11, stock bin valve; 12, induced draft fan; 13, stock bin; 14, herringbone pipe valve; 15, outlet pipe valve; 16, clean gas pipe; 17, pulse dust collector air inlet; 18, pulse dust collector air outlet; 19, flue gas collecting pipe; 20, temperature-resistant connecting pipe; 21, track; 22, forward herringbone pipe; 23, dust collecting chamber cooling water tank; 24, detachable burner; 25, grate; 26, downcomer; 27, kiln tail herringbone connecting pipe; 28, kiln tail box water tank; 29, kiln head section cooling cylinder; 30, kiln tail section preheating cylinder; 31, heat preservation jacket; 32, blower; 33, hot air collecting annular sleeve; 34, two-way adjusting cooler; 35, production line body; 36, hot air distribution annular sleeve; 37, outlet pipe. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] Please refer to Figures 1-9The utility model provides a kind of multifunctional rotary kiln production line, including production line body 35, production line body 35 includes rotary kiln body 1, kiln head 2, kiln tail 3, kiln tail box 4, several groups of reverse surface cooler 5, several groups of forward surface cooler 6, pulse dust collector 7, kiln head combustion chamber 8, dust collecting chamber 9, temperature measuring instrument 10 and induced draft fan 12, one end of rotary kiln body 1 is connected with one end of kiln tail 3, rotary kiln body 1 is connected with one end of kiln tail box 4 by kiln tail 3, kiln tail box 4 is connected with the bottom end of a group of reverse surface cooler 5 by kiln tail box water tank 28, the bottom end of a group of reverse surface cooler 5 is equipped with bunker 13, each bunker 13 is equipped with temperature measuring instrument 10, bunker 13 is connected with one end of next group of reverse surface cooler 5, several groups of reverse surface cooler 5 are arranged in series, last reverse surface cooler 5 is connected with one group of three groups of bidirectional adjusting cooler 34 close to through bunker 13, three groups of bidirectional adjusting cooler 34 are connected with three groups of gas outlet pipeline 37 respectively, three groups of gas outlet pipeline 37 are connected with the pulse dust collector inlet 17 of pulse dust collector again, gas outlet pipeline 37 middle part is equipped with gas outlet pipeline valve 15;The other end of rotary kiln body 1 is connected with kiln head 2, the inside of kiln head 2 is fixedly connected with flue gas collecting pipeline 19, rotary kiln body 1 is connected with the end of kiln head combustion chamber 8 opposite by flue gas collecting pipeline 19, kiln head combustion chamber upper portion 8 is connected with one end of dust collecting chamber 9 by temperature-resistant connecting pipeline 20, forward surface cooler 6 is connected with dust collecting chamber cooling water tank 23 by forward herringbone pipeline 22, the bottom end of a group of forward surface cooler 6 is equipped with bunker 13, each bunker 13 is equipped with temperature measuring instrument 10, bunker 13 is connected with one end of next group of forward surface cooler 6, several groups of forward surface cooler 6 are arranged in series, last forward surface cooler 6 is connected with one group of three groups of bidirectional adjusting cooler 34 close to through bunker 13, bidirectional adjusting cooler 34 is connected with the pulse dust collector inlet 17 of pulse dust collector 7 by gas outlet pipeline 37;Flue gas collecting pipeline 19 is made of temperature-resistant stainless steel or refractory material, kiln head combustion chamber 8 is connected with dust collecting chamber 9 by temperature-resistant connecting pipeline 20, temperature-resistant connecting pipeline 20 is made of high-temperature-resistant stainless steel or refractory material.

[0034] The bottom end of kiln head combustion chamber 8 is connected with track 21, and kiln head combustion chamber 8 moves on track 21 by external force.

[0035] The bottom of several groups of reverse surface cooler 5 and several groups of forward surface cooler 6, three groups of bidirectional adjusting cooler 34 is equipped with herringbone pipeline valve 14 respectively, bunker valve 11 is installed between bunker 13 and next bunker 13, gas outlet pipeline valve 15 is arranged in the middle of gas outlet pipeline 37, and each bunker 13 is equipped with temperature measuring instrument 10.

[0036] The pulse dust collector 7 is provided with a pulse dust collector air inlet 17 at one end, the pulse dust collector air inlet 17 of the pulse dust collector 7 is connected with three groups of air outlet pipes 37 respectively, the three groups of air outlet pipes 37 are connected with three groups of two-way adjusting coolers respectively, the other end of the pulse dust collector 7 is provided with a pulse dust collector air outlet 18.

[0037] The detachable burner 24 is mounted on the surface of the kiln head 2, the detachable burner 24 is installed on the kiln head 2, when the rotary kiln body 1 is used for calcination function, the coal gas or natural gas passes through the detachable burner 24, ignites the fire source to carry out calcination operation.

[0038] The grate 25 is arranged at the lower part of the kiln head combustion chamber 8, when the production line is used for drying materials, the detachable grate 25 is installed on the kiln head combustion chamber 8, the kiln head combustion chamber 8 uses coal or biomass fuel to burn, high-temperature flue gas enters the rotary kiln body 1, the wet material from the discharge pipe 26 on the kiln tail 3 is dried, the flue gas enters the reverse surface cooler 5 from the kiln tail box 4, the control valve is opened and closed, thereby controlling the flue gas cooling area and the flue gas temperature entering the pulse dust collector 7, to avoid the flue gas from being too low to condense or too high to burn the bag.

[0039] The discharge pipe 26 is fixedly arranged in the kiln tail box 4, the kiln tail section preheating cylinder 30 serves as a preheating section of the material entering the rotary kiln body 1 from the discharge pipe 26, and preheats the material; the rotary kiln body 1 is in a micro-negative pressure state, air enters the rotary kiln body 1 from the space of the kiln head 2 to participate in the process, as described above, the kiln head section cooling cylinder 29 is added, the hot material in the kiln directly exchanges heat with the air, the hot air enters the kiln to participate in the process, which can save fuel and optimize the temperature conditions of the material reaction in the kiln body; the kiln tail section preheating cylinder 30 is heated by the hot air outside, and then the material is heated by the heat conduction of the stainless steel wall of the cylinder, so that the material entering the kiln from the discharge pipe is heated from the outside, and at the same time, the material exchanges heat with the hot flue gas and tail gas in the rotary kiln body 1 in the kiln tail section preheating cylinder 30, so that the material is heated inside and outside the kiln.

[0040] The one side of the rotary kiln body 1 is provided with a kiln head section cooling cylinder 29, and the other side of the rotary kiln body 1 is provided with a kiln tail section preheating cylinder 30; the outer side of the kiln head section cooling cylinder 29 and the outer side of the kiln tail section preheating cylinder 30 are both provided with a heat preservation jacket 31; the rotary kiln body 1 is provided with a blower 32, and the one side of the blower 32 is connected with the one end of the heat preservation jacket 31; the outer side of the kiln head section cooling cylinder 29 is provided with a hot air collecting annular sleeve 33, and the outer side of the kiln tail section preheating cylinder 30 is provided with a hot air distribution annular sleeve 36; the rotary kiln body 1 is increased in length by the kiln head section cooling cylinder 29 and the kiln tail section preheating cylinder 30 in the conventional kiln body design; the increased cylinder is made of heat-resistant stainless steel; and the middle section of the rotary kiln body 1 adopts an inner lining refractory brick structure; the kiln head section cooling cylinder 29 serves as a cooling section of hot materials in the rotary kiln body 1, and through heat exchange between the inner and outer surfaces of the cylinder, the hot materials in the rotary kiln body 1 are cooled to a process required temperature, directly packaged or entered into a next process; the outer cylinder is provided with the heat preservation jacket 31, the blower 32 blows air into the heat preservation jacket 31 for forced ventilation cooling, and the hot air after heat exchange is collected by the hot air collecting annular sleeve 33 and flows to the hot air distribution annular sleeve 33 of the kiln tail section preheating cylinder 30.

[0041] The kiln tail box 4 is provided with a kiln tail box water tank 28, and the one side of the kiln tail box water tank 28 is fixedly connected with a kiln tail herringbone connecting pipeline 27.

[0042] Referring to Figure 10 , the dust collection flue gas temperature adjusting steps of the utility model are as follows:

[0043] Step one, design an annular system: the kiln head 2, the kiln tail 3, the kiln tail box 4, the reverse surface cooler 5, the forward surface cooler 6, the bidirectional adjusting cooler 34, the pulse dust collector 7, the kiln head combustion chamber 8, the flue gas collecting pipeline 19, the dust collecting chamber 9 and the temperature measuring instrument 10 jointly constitute an annular system;

[0044] Step two, adjust the flue gas temperature: according to the process requirement of the pulse dust collector 7 to the inlet air temperature, by controlling the opening and closing and the opening degree of each valve such as the material bin valve 11, the herringbone pipeline valve 14 and the outlet air pipeline valve 15, the number of coolers through which the flue gas passes is controlled, and the flue gas cooling area size is determined, so that the flue gas temperature entering the pulse dust collector 7 reaches the requirement; the flue gas is filtered by the pulse dust collector 7, discharged from the pulse dust collector outlet 18, enters the clean air pipeline 16, and then enters the flue gas environmental protection treatment system for treatment and discharge after reaching the standard.

[0045] Example 1:

[0046] The utility model discloses, kiln head 2, kiln tail 3, kiln tail box 4, reverse surface cooler 5, forward surface cooler 6, two -way adjusting cooler 34, pulse dust collector 7, kiln head combustion chamber 8, flue gas collection pipeline 19, dust collecting chamber 9 and pyrometer 10 common annular system is constituted, according to the process requirement of pulse dust collector 7 to inlet air temperature, through the control of each valve opening and closing and the opening of material bin valve 11, herringbone pipeline valve 14, air outlet pipeline valve 15 etc., control the number of flue gas through cooler, decide the size of flue gas cooling area, to make the flue gas temperature that enters pulse dust collector 7 reach the requirement, avoid flue gas dewing too low or burning bag too high, flue gas is discharged after passing through pulse dust collector 7 by pulse dust collector air outlet 18 and enters net gas pipeline 16, and then enters flue gas environmental protection treatment system and discharges after reaching the standard, when reverse incineration or calcination, flue gas enters kiln tail box 4 from rotary kiln body 1, and kiln tail box 4 collects the flue gas in rotary kiln body 1, and the coarse particle in flue gas settles and primarily cools here, and flue gas enters reverse surface cooler 5 further cooling from kiln tail herringbone connecting pipeline 27 from kiln tail box water tank 28, and kiln head combustion chamber 8 uses coal and other fuel combustion, and produces high-temperature flue gas and enters rotary kiln body 1, and dries wet material from kiln tail 3 upper and lower material pipe 26, and flue gas enters reverse surface cooler 5 cooling from kiln tail box 4, and then carries out flue gas dust collection, when forward incineration or calcination, flue gas enters kiln head combustion chamber 8 through flue gas collection pipeline 19, and kiln head combustion chamber 8 collects the flue gas that does not burn completely in rotary kiln body 1 and further burns, and simultaneously, kiln head combustion chamber 8 plays the role of settling chamber, then enters dust collecting chamber 9 through temperature-resistant connecting pipeline 20, and coarse particle flue dust settles and carries out flue gas preliminary cooling in dust collecting chamber 9, and flue gas enters forward surface cooler 6 further cooling from forward herringbone pipeline 22 from dust collecting chamber cooling water tank 23.

[0047] Example 2:

[0048] The utility model discloses, the kiln head 2 of rotary kiln kiln body 1 is equipped with kiln head section cooling cylinder body 29, and the kiln head section cooling cylinder body 29 is equipped with heat preservation jacket 31 and hot air collection ring cover outside, and the kiln tail 3 is equipped with kiln tail section preheating cylinder body 30, and the kiln tail section preheating cylinder body 30 is equipped with heat preservation jacket 31 and hot air collection ring cover 33, and the rotary kiln kiln body 1 adopts the lining refractory brick structure, and the tail kiln tail 3 of rotary kiln kiln body 1 is connected with kiln tail box 4, and the kiln tail box 4 is connected with reverse surface cooler 5, and the reverse surface cooler 5 below is equipped with bunker 13, and the bunker 13 is connected with next group reverse surface cooler 5, and the bunker 13 is through automatic control or manually controlled valve, and the valve is bunker valve 11, and the reverse surface cooler 5 is connected with the control valve of bunker 13, and the control valve is herringbone pipe valve 14, and a group of reverse surface cooler 5 is connected in series, and the reverse surface cooler 5 adopts herringbone pipe, and the last reverse surface cooler 5 is connected with two -way regulation cooler 34, and the two -way regulation cooler 34 is connected with adjacent two -way regulation cooler 34, and the two -way regulation cooler 34 below is bunker 13, and the bunker 13 is through automatic control or manually controlled valve, and the valve is bunker valve 11, and the two -way regulation cooler 34 is connected with the control valve of bunker 13, and the control valve is herringbone pipe valve 14, and the two -way regulation cooler 34 is connected with gas outlet pipe respectively, and the gas outlet pipe is connected with pulse dust collector inlet 17 respectively, and the pulse dust collector 7 is equipped with pulse dust collector inlet 17 and pulse dust collector outlet 18, and the gas outlet pipe is equipped with gas outlet pipe valve 15, and the pulse dust collector outlet 18 is connected with clean gas pipe 37, and the clean gas pipe 16 is connected with induced draft fan 12, and the induced draft fan 12 is connected with flue gas treatment system.

[0049] Example 3:

[0050] The utility model discloses, in the drying production time, the furnace grate 25 is installed under kiln head combustion chamber 8, closes kiln head combustion chamber 8 upper temperature -resistant connecting pipe 20 and valve.

[0051] Example 4:

[0052] The utility model discloses, in the calcination production time, need to use coal gas or natural gas heating calcination, dismounts kiln head combustion chamber 8 and temperature -resistant connecting pipe 20's connecting sleeve ring and with flue gas collection pipe 19's connecting sleeve ring, uses external force to move kiln head combustion chamber 8, and kiln head combustion chamber 8 advances to the stipulated position along the track 21, and installs detachable burner 24 in flue gas collection pipe 19.

[0053] Example 5:

[0054] The utility model discloses, the surface cooler 6 of reverse surface cooler 5, bunker 13, two -way regulation cooler 34, gas outlet pipe, pulse dust collector inlet 17 and pulse dust collector outlet 18 all are equipped with temperature measuring instrument 10, according to temperature measuring instrument 10 temperature and production process need and temperature requirement control valve's opening and closing.

[0055] Example 6:

[0056] The utility model discloses, for drying production process, such as the connecting mode of the production line each part of example 1-5, the furnace grate 25 is installed under kiln head combustion chamber 8, closes the valve of kiln head combustion chamber 8 upper temperature -resistant connecting pipeline 20, opens the herringbone pipeline valve 14 of two -way regulation cooler 34, opens the air outlet pipeline valve 15 of air outlet pipeline, closes the air outlet pipeline valve 15 of other air outlet pipeline, closes the bunker valve 11 of bunker 13 between two -way regulation cooler 34, opens the bunker valve 11 of the bunker 13 of remaining reverse surface cooler 5, closes the herringbone pipeline valve 14 of remaining all reverse surface cooler 5, starts rotary kiln body 1, after rotary kiln body 1 rotation normal, kindling ignites the biomass particle in kiln head combustion chamber 8, starts pulse dust collector 7, starts induced draft fan 12, under the action of induced draft fan 12, hot flue gas is from kiln head combustion chamber 8 through flue gas collection pipeline 19, flows into rotary kiln body 1, then in turn flows into kiln tail box 4, kiln tail herringbone connecting pipeline 27, the bunker 13 under reverse surface cooler 5, and hot flue gas in turn according to the order through remaining bunker 13, two -way regulation cooler 34, air outlet pipeline, and hot flue gas again enters pulse dust collector 7 from pulse dust collector air inlet 17 and is filtered into pure gas, is conveyed through induced draft fan 12 and is discharged into desulfurization and tail gas treatment system by pure gas pipeline 16.When the temperature in the rotary kiln body 1 reaches the required temperature, the feeding operation starts from the feeding pipe 26, and the wet material enters the kiln tail section preheating cylinder 30, the rotary kiln body 1, and the kiln head section cooling cylinder 29 in sequence for drying, while the air blower 32 is started to collect the residual heat for preheating the kiln tail section preheating cylinder 30 and the material in the kiln. The hot flue gas and the wet material flow in opposite directions, and heat exchange occurs between them. The material is gradually dried, and the temperature of the hot flue gas gradually decreases to become wet hot flue gas. The temperature instrument 10 monitors the flue gas temperature, and according to the temperature, the corresponding number of reverse surface coolers 5 is opened by opening the herringbone pipe valve 14. If the cooling area is insufficient to cool the flue gas to the required temperature, the bidirectional adjusting cooler 34 and the gas outlet pipe 37 are sequentially started, the corresponding herringbone pipe valve 14 is opened, and the corresponding bunker valve 11 is closed until the flue gas temperature of the pulse dust collector 7 meets the requirements. The dried material is discharged from the kiln head 2 and transported to the next process. This process is a reverse production process, which is used for incineration production process. The connection mode of each part of the production line in Examples 1-2 is as follows: the bunker valve 11 at the temperature-resistant connecting pipe 20 of the kiln head combustion chamber 8 is in an open state, the herringbone pipe valve 14 of the forward surface cooler 6 is in a closed state, the bunker valve 11 of the corresponding bunker 13 of all forward surface coolers 6 is in an open state, the herringbone pipe valve 14 of the bidirectional adjusting cooler 34 is in an open state, the bunker valve 11 between the bunkers 13 of the bidirectional adjusting cooler 34 is closed, the gas outlet pipe valve 15 of the gas outlet pipe is opened, the gas outlet pipe valves 15 of the gas outlet pipe one and the gas outlet pipe two are closed, the rotary kiln body 1 is started, and after the rotary kiln body 1 rotates normally, the pulse dust collector 7 is started, the combustible material is ignited, and the feeding pipe 26 is put into operation. The incineration raw material rolls and moves from the kiln tail section preheating cylinder 30 to the rotary kiln body 1 and the kiln head section cooling cylinder 29. The incinerated material is discharged from the kiln head 2 outlet and transported to the specified location for stacking. Under the action of the induced draft fan 12, the incineration flue gas enters the kiln head combustion chamber 8 through the flue gas collecting pipe 19, and the incomplete combustion flue gas continues to burn here. The heavy particulate matter falls to the bottom of the kiln head combustion chamber 8 and is periodically cleaned and stacked. The flue gas enters the dust collecting chamber 9 through the temperature-resistant connecting pipe 20, and the heavy particulate matter settles in the lower bunker and is periodically cleaned.

[0057] Step one, the flue gas further through the dust chamber 9 herringbone connecting pipe flow into the silo 13 under the surface cooler 6, flue gas in turn according to the order through the rest of the silo 13, bidirectional adjustment cooler 34, gas pipeline three 16, flue gas from the pulse dust collector inlet 17 into the pulse dust collector 7 filter into the clean gas, by clean gas pipeline 16 through the induced draft fan 12 into the desulfurization and tail gas treatment system, this process is the forward production process; temperature measuring instrument 10 monitoring flue gas temperature, according to the temperature conditions to determine the cooling area, open the need to increase the cooling area corresponding to the number of herringbone pipe valve 14 surface cooler 6, if the cooling area is not enough to cool the flue gas to meet the temperature requirements, continue to use the bidirectional adjustment cooler 34 and gas pipeline 37, bidirectional adjustment cooler 34 and gas pipeline, open the corresponding herringbone pipe valve 14, close the corresponding silo valve 11, until the pulse dust collector 7 flue gas temperature requirements, this process is the forward production process, observe the temperature rise and fall of the kiln head combustion chamber 8 and the dust chamber 9, observe the flue gas flow, when the temperature of the kiln head combustion chamber 8 is more than 1000℃, the temperature of the dust chamber 9 is more than 900℃;

[0058] Step two, refer to the forward cooling and dust collection operation process in step one of the forward production process, start the reverse production process, after the reverse production is stable, close the forward production process, the forward and reverse production process according to the production situation switching, or at the same time, by controlling the opening of the gas pipeline valve 15 on the gas pipeline 37 and the gas pipeline 37, adjust the stability of the flue gas temperature and gas flow, ensure the stable production;

[0059] Step three, for volatile smelting production process, preferentially use the reverse production process, the forward production process as auxiliary production process, operation according to step one and step two;

[0060] Step four, for calcination production process, need to use coal gas or natural gas heating calcination, disassembly kiln head combustion chamber 8 and the connection sleeve ring of temperature-resistant connecting pipeline 20 and the connection sleeve ring of flue gas collecting pipeline 19, use external force to move kiln head combustion chamber 8, kiln head combustion chamber 8 travels along the track 21 to the specified position, install detachable burner 24 in flue gas collecting pipeline 19, open the miter valve 14 of the air outlet pipeline valve 15 of the air outlet pipeline 37, close the air outlet pipeline valve 15 of the air outlet pipeline, the air outlet pipeline 37, close the bunker valve 11 of the bunker 13 between the bidirectional adjusting cooler 34, open the bunker valve 11 of the bunker 13 under the remaining reverse surface cooler 5, close the miter valve 14 of the remaining all reverse surface cooler 5, start the rotary kiln body 1, after the rotary kiln body 1 rotates normally, start the pulse dust collector 7, start the induced draft fan 12, open the coal gas or natural gas valve, ignite the detachable burner 24, under the action of the induced draft fan 12, the flue gas flow flows into the rotary kiln body 1, and then flows into the kiln tail box 4, the kiln tail miter connecting pipeline 27, the bunker 13 under the reverse surface cooler 5 in sequence, the flue gas flows through the remaining bunker 13, the bidirectional adjusting cooler 34, the air outlet pipeline 37 in sequence, and then the flue gas enters the pulse dust collector 7 from the pulse dust collector inlet 17 to be filtered into clean gas, which is transported through the induced draft fan 12 and discharged into the desulfurization and tail gas treatment system; increase the flame temperature of the detachable burner 24, when the temperature of the rotary kiln body 1 reaches the required temperature, start the air blower 32 to collect the waste heat and participate in the preheating of the kiln tail section preheating cylinder 30 and the material in the kiln, the flame and the flue gas flow in the opposite direction of the material flow, and the raw materials are gradually calcined, the flue gas flows in the above direction, and the temperature instrument 10 monitors the flue gas temperature to determine the cooling area according to the temperature, open the miter pipeline valve 14 of the corresponding number of reverse surface coolers 5 that need to increase the cooling area, if the cooling area is insufficient to cool the flue gas to the required temperature, continue to use the bidirectional adjusting cooler 34 and the air outlet pipeline 37 in sequence, open the corresponding miter pipeline valve 14, close the corresponding bunker valve 11, until the flue gas temperature requirement of the pulse dust collector 7 is reached; according to the temperature adjustment requirement, determine whether the bidirectional adjusting cooler 34 and the air outlet pipeline 37 are opened or closed or the opening size, then further meet the temperature requirement of the flue gas entering the pulse dust collector inlet 17, the calcined product is discharged from the kiln head 2 and transported to the next process, and this process is a reverse production process.

[0061] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-functional rotary kiln production line comprising a production line body (35), characterized in that: The production line body (35) comprises a rotary kiln body (1), a kiln head (2), a kiln tail (3), a kiln tail box (4), a plurality of groups of reverse surface coolers (5), forward surface coolers (6), pulse dust collectors (7), a kiln head combustion chamber (8), a dust collecting chamber (9), a temperature measuring instrument (10) and an induced draft fan (12), one end of the rotary kiln body (1) is connected with one end of the kiln tail (3), the rotary kiln body (1) is connected with one end of the kiln tail box (4) through the kiln tail (3), a kiln tail box water tank (28) on the kiln tail box (4) is connected with the bottom end of a group of reverse surface coolers (5), the bottom end of a group of the reverse surface coolers (5) is provided with a stock bin (13), the stock bin (13) is connected with one end of the next group of reverse surface coolers (5), a plurality of groups of reverse surface coolers (5) are connected in series through the stock bin (13) in this way, the last group of reverse surface coolers is connected with a bidirectional adjusting cooler (34) through the stock bin (13), and the bidirectional adjusting cooler (34) is composed of three groups of coolers with the same structure connected in series.

2. A multi-functional rotary kiln production line according to claim 1, characterized in that: The bottom end of the kiln head combustion chamber (8) is connected with a track (21).

3. A multi-functional rotary kiln production line according to claim 1, characterized in that: The bottom parts of the plurality of groups of reverse surface coolers (5) and the plurality of groups of forward surface coolers (6) and the three groups of bidirectional adjusting coolers (34) are respectively provided with splayed pipe valves (14), and the stock bin (13) and the next stock bin (13) are provided with stock bin valves (11).

4. A multi-functional rotary kiln production line according to claim 1, characterized in that: One end of the pulse dust collector (7) is provided with a pulse dust collector air inlet (17), the pulse dust collector air inlet (17) of the pulse dust collector (7) is connected with three groups of two-way adjusting coolers (34) through three groups of air outlet pipes (37) respectively, the middle of the air outlet pipe (37) is provided with an air outlet pipe valve (15); the two ends of the two groups of two-way adjusting coolers (34) on the side are connected with the reverse surface cooler (5) and the forward surface cooler (6) respectively, the other end of the pulse dust collector (7) is provided with a pulse dust collector air outlet (18), the pulse dust collector air outlet (18) is connected with a clean gas pipe (16), connected with a induced draft fan (12), and finally connected with a tail gas treatment system.

5. A multi-functional rotary kiln production line according to claim 1, characterized in that: The surface of the kiln head (2) is provided with a detachable burner (24).

6. A multi-functional rotary kiln production line according to claim 1, characterized in that: The lower part of the kiln head combustion chamber (8) is provided with a grate (25).

7. A multi-functional rotary kiln production line according to claim 1, characterized in that: One side of the rotary kiln body (1) is provided with a kiln head section cooling cylinder (29), the other side of the rotary kiln body (1) is provided with a kiln tail section preheating cylinder (30), the outer side of the kiln head section cooling cylinder (29) and the outer side of the kiln tail section preheating cylinder (30) are both provided with a heat preservation jacket (31), one side of the rotary kiln body (1) is provided with a blower (32), one side of the blower (32) is connected with one end of the heat preservation jacket (31), the outer side of the kiln head section cooling cylinder (29) is provided with a hot air collecting annular sleeve (33), the outer side of the kiln tail section preheating cylinder (30) is provided with a hot air distribution annular sleeve (36).

8. A multi-functional rotary kiln production line according to claim 1, characterized in that: One side of the kiln tail box (4) is fixedly connected with a kiln tail herringbone connecting pipeline (27), the kiln tail box (4) is connected with a kiln tail box water tank (28) through the kiln tail herringbone connecting pipeline (27).

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