CN203513577U

CN203513577U - Drying or low-temperature dry-distillation device for brown coal or low-coalification long flame coal

Info

Publication number: CN203513577U
Application number: CN201320359922.2U
Authority: CN
Inventors: 蔡京鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-22
Filing date: 2013-06-22
Publication date: 2014-04-02
Anticipated expiration: 2023-06-22

Abstract

The utility model discloses a drying or low-temperature dry-distillation device for brown coal or low-coalification long flame coal. The device is characterized in that a tunnel type drying chamber comprises a preheating section and a high-temperature section, wherein a plurality of exhausting holes are formed in the top of the high-temperature section, and a plurality of hot air or steam inlets are formed in the bottom or the side part of the high-temperature section; a plurality of excess tail gas inlets are formed in the bottom or the side part of the preheating section and are communicated with the exhausting holes of the high-temperature section through an excess tail gas exhausting pipeline of the high-temperature section, and a plurality of tail gas and condensate water discharging holes are formed in the bottom of the preheating section. According to the drying or low-coalification dry-distillation device, after tail gas exhausted from the high-temperature section is completely or partially reheated by an external heat source heater or mixed with fresh hot air, hot air and steam with the required temperatures, flow rates and fluxes are reformed and are utilized for carrying out drying or dry distillation on materials, and the tail gas can further partially enter the preheating section to preheat dried materials and empty the materials subjected to environment-friendly processing, so that the device has an environment-friendly effect, is simple in structure, is easy to control and produce in batch and is low in manufacturing cost, and the evaporation heat can be partially recycled.

Description

The oven dry of brown coal or low rotten long-flame coal or low-temperature pyrolysis device

Technical field

The utility model relates to coal drying field, especially relates to oven dry or the low-temperature pyrolysis field of brown coal and low rotten long-flame coal.

Background technology

For many years both at home and abroad for the moisture content that reduces brown coal and low rotten long-flame coal, improve the technical matters of ature of coal and done a large amount of research trials, the method adopting is of a great variety, but also there is no proven technique flow process, there is many drawbacks, mainly containing: 1.. the coal after oven dry still has the shortcoming of brown coal completely, and easily spontaneous combustion, weathering, easy water suction are got damp.2.. dry method is dried because brown coal burning-point is low, and during oven dry, hot blast directly contacts with coal, dangerous large, the even blast of easily catching fire; Tail vapour is carried coal dust secretly, and it is poor that degree is controlled in environmental pollution; When wet method (steam) is dried, steam consumption is large, and power consumption is large, and production cost is high, and equipment manufacturing cost is expensive.3.. drying plant is complicated, is difficult to maximize produce, and cost of investment is high, and production cost is high.

Utility model content

The problem existing for prior art, the utility model provides oven dry or the low-temperature pyrolysis device of a kind of brown coal or low rotten long-flame coal.Through this device dry or low-temperature pyrolysis after material moisture content reduce significantly, particularly brown coal or low rotten long-flame coal, its resorption is minimum, and spontaneous combustion, weathering do not occur, unit thermal value increases substantially; Volume significantly dwindles, and granule strength increases; The moisture content evaporating in material can most ofly be discharged with water of condensation form, and environmental protection is easy to control, the partially recycled utilization of vaporization heat, and production cost is low; The simple cost of equipment is low, is easy to produce in enormous quantities.

For achieving the above object, technical solutions of the utility model are:

The oven dry of brown coal or low rotten long-flame coal or low-temperature pyrolysis device, this device includes a tunnel type drying chamber, this tunnel type drying chamber comprises a high temperature section, and the top of described high temperature section is arranged at intervals with a plurality of venting ports, and is provided with a plurality of hot blasts or steam admission port in its bottom or sidepiece; The speed of one coal charger is controlled, and to discharge end, moves and be installed in tunnel drying shed from the feed end of high temperature section; It is outdoor that one heat source generator arranges tunnel type drying, and be communicated with venting port and hot blast or the steam admission port of tunnel type drying chamber, the hot blast that its output temperature, flow velocity and flow are controlled or steam.

Further, described tunnel type drying chamber also comprises a preheating section, and the bottom of preheating section or sidepiece are provided with a plurality of unnecessary tail gas admission ports, is communicated with, and is separately provided with a plurality of tail gas and condensate drain outlet by a unnecessary exhaust emission tube road with a plurality of venting ports of high temperature section.

Further, be mounted with a plurality of metal charge pipes on described coal charger, a plurality of metal charge pipes interval arranges.

Further, on the unnecessary exhaust emission tube road that is communicated with the unnecessary tail gas admission port of preheating section and the venting port of high temperature section, be provided with a cleaning apparatus.

The utility model is contained in material (particle of brown coal or low rotten long-flame coal) in metal charge pipe, the heating agent of being exported by heat source generator (hot blast or steam) does not contact coal particle, make flammable materials (particle of brown coal or low rotten long-flame coal) in drying process, not contact oxygen, do not produce the danger of burning, blast.Metal charge pipe is installed on coal charger, can realize the oven dry of the relative inactive of material, is particularly conducive to the modification of brown coal or low rotten long-flame coal particle, volume-diminished, and strength increase, does not get damp, not spontaneous combustion, not efflorescence.The utility model coal charger is that speed is controlled, and the hot blast of heat source generator output or temperature, flow velocity and the flow of steam are controlled, effectively guarantees that brown coal particle dries under best temperature and time.But the tail gas that high temperature section is discharged all or part of after external heat source generator reheats or mixes with the hot blast newly adding, again form hot blast and the steam of required temperature, flow velocity and flow, carry out oven dry or the destructive distillation of material, also can a part enter preheating section, carry out emptying after the preheating of material drying and environmental protection treatment.The large portion of the latent heat of vaporization reclaims, and environmental protection is easy to control.The utility model drying system is easy to the batch production of maximizing, and industrialization application program is simple, and equipment manufacturing cost is low, and production cost is low.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a part of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the structural representation of the utility model oven dry or low-temperature pyrolysis device;

Fig. 2 is the high temperature section structural representation of the utility model oven dry or low-temperature pyrolysis device.

Embodiment

In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

A kind of brown coal as shown in Figure 1 or the oven dry of low rotten long-flame coal or low-temperature pyrolysis device, this device includes tunnel type drying chamber 1, coal charger 2, metal charge pipe 3 and heat source generator 4.

Described tunnel type drying chamber 1 comprises preheating section A and high temperature section B, and preheating section A and high temperature section B can be communicated with setting, also can between arrange across a certain distance mutually.The high temperature section B producing as shown in Figure 2, its top is provided with a plurality of venting ports 11, and is provided with a plurality of hot blasts or steam admission port 13 in its bottom or sidepiece, and the bottom of described high temperature section B also can be provided with more than one condensate drain outlet 12.The bottom of described preheating section A or sidepiece are provided with a plurality of unnecessary tail gas admission ports 15, by the unnecessary exhaust emission tube of high temperature section road 16, be communicated with a plurality of venting ports 11 of high temperature section, with the feed end in tunnel type drying chamber 1 to discharge end form one by low temperature to the asymptotic keeping warmth space of high temperature.On the unnecessary exhaust emission tube road 16 that is communicated with the unnecessary tail gas admission port 15 of preheating section A and the venting port 11 of high temperature section B, be provided with a cleaning apparatus 17 and a unnecessary tail gas control valve 18, described cleaning apparatus 17 is preferably electrostatic precipitator.Described preheating section A is provided with a plurality of tail gas and condensate drain outlet 19, emptying after sweetener 5 environmental protection treatment from water of condensation or the tail gas of tail gas and condensate drain outlet 19 discharges.Described tail gas and condensate drain outlet 19 can be arranged on the top of preheating section A or sidepiece with emptying tail gas, can be arranged on bottom or the emptying water of condensation of sidepiece of preheating section A.

Described coal charger 2 speed are controlled, and are set to a plurality ofly, and coal charger 2 also moves and is installed in tunnel drying shed to high temperature section B from preheating section A, and namely coal charger 2J moves to discharging end from the charging end of tunnel type drying chamber 1.The speed that described coal charger 2 can set slides on the track 14 being provided with in tunnel drying shed 1 by driving arrangements such as tractor or top cars.

Described metal charge pipe 3 can be one or more intervals and is installed on every coal charger 2, to move with coal charger 2 one, leaves certain spaced slot between metal charge pipe 3, is beneficial to ventilate.Metal charge pipe 3 can be cylindric, can be also flat column.

Described heat source generator 4 arranges outside tunnel type drying chamber 1, and described heat source generator 4 can be the device of interchanger, Coalhotairfurnace or other generation high-temperature hot-airs.Described heat source generator 4 is communicated with venting port 11 and hot blast or the steam admission port 13 of tunnel type drying chamber 1.The tail gas of discharging from the venting port 11 of high temperature section B all or most ofly by heat source generator 4, reclaimed and passed into the bottom of high temperature section B or a plurality of hot blasts of sidepiece or steam admission port 13 reheating and enter high temperature section B and recycle.These heat source generator 4 hot blasts of output or temperature, flow velocity and the flow of steam are controlled.The hot blast or the steam that set temperature, flow velocity, flow pass into from bottom or the sidepiece of tunnel type drying chamber 1.Hot blast or steam are discharged to the top of tunnel type drying chamber 1 by the gap between metal charge pipe 3, and heating of metal material pipe 3 simultaneously, and then the material in metal charge pipe 3 is dried or low-temperature pyrolysis.

Said apparatus, except can be used for oven dry or low-temperature pyrolysis brown coal or low rotten long-flame coal, also can be used for the dry of unclassified stores.Now take and dry or low-temperature pyrolysis brown coal or low rotten long-flame coal are example, illustrate and adopt said apparatus to dry or the method for low-temperature pyrolysis, step is as follows:

1. charging: the particle of brown coal or low rotten long-flame coal is packed in the metal charge pipe 3 that a plurality of heat conductivilitys on coal charger 2 are good.

2. charging: the coal charger 2 of having feeded enters in tunnel type drying chamber 1 from the feed end of tunnel type drying chamber 1; The bottom of tunnel type drying chamber 1 or sidepiece pass into hot blast or the steam of the temperature with drying capacity, flow velocity and the flow that preset, and hot blast or steam can be that one or more pass into.The top of drying shed is arranged at intervals with a plurality of venting ports.

3. dry or low-temperature pyrolysis: coal charger 2 moves to discharge end from the feed end of tunnel type drying chamber 1 by the speed presetting, and with the speed setting, by driving arrangements such as tractor or top cars, to discharge end, moves.So that be contained in brown coal in metal charge pipe 3 or the particle of low rotten long-flame coal heats up gradually, dry or destructive distillation; The tail gas producing in oven dry or retort process is discharged from a plurality of venting ports 11 at top, tunnel type drying chamber.The water evaporates of the particle of brown coal or low rotten long-flame coal is also discharged from metal charge pipe, be blended in hot blast or steam and heat just entering the low-temperature material post of tunnel type drying chamber 1, part steam again can disengaged vapor heat-transmission can after be condensed into water and discharge from the condensate drain outlet 12 of 1 bottom, tunnel type drying chamber.

The utility model also reclaims by adding heat source generator 4 tail gas that a plurality of venting ports 11 are discharged, tail gas that a plurality of exhaust oral pores 11 are discharged is all or part of pass into heat source generator 4 and reheat after, in the high temperature section B that again passes into tunnel type drying chamber 1 from hot blast or the steam admission port 13 of tunnel type drying chamber 1, participate in and dry or low-temperature pyrolysis work.Because the hot blast in tail gas is with certain temperature, in the water vapor carrying, contain a large amount of vaporization heat, recycling can be saved a large amount of heat energy.Meanwhile, because the specific heat of steam and thermal conductivity are high, the content that improves steam in hot blast contributes to improve drying efficiency and speed.

Described heat source generator 4 can be coal heating, also can use other type of heating.Heat source generator 4 can pass into clean air, become the hot blast with drying capacity after heat source generator 4 heating after, from discharge end, pass in tunnel type drying chamber 1, after being dried, metal charge pipe 3 discharges from the feed end of tunnel type drying chamber 1 or tail gas and condensate drain outlet 11, because the hot blast by heat exchange itself is clean, in drying course, the particle with brown coal or low rotten long-flame coal does not directly contact, and the tail gas environmental protection of discharge is easily controlled.By the control of unnecessary tail gas control valve 18, the tail gas of discharging from the venting port 11 of high temperature section B can part pass into preheating section A after cleaning apparatus 17 purifies, material fully and after 3 heat exchanges of metal charge pipe is lowered the temperature in preheating section A, it is emptying after sweetener 5 environmental protection treatment that steam major part is condensed into water, the large portion of the latent heat of vaporization reclaims, and environmental protection is easy to control.

4. the complete brown coal of drying or low-temperature pyrolysis or the particle of low rotten long-flame coal, after overcooling, then draw off through coal charger 2 from discharge end is sent in metal charge pipe 3, are finished product.

Above-mentioned explanation illustrates and has described preferred embodiment of the present utility model, as previously mentioned, be to be understood that the utility model is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can, in utility model contemplated scope described herein, by technology or the knowledge of above-mentioned instruction or association area, change.And the change that those skilled in the art carry out and variation do not depart from spirit and scope of the present utility model, all should be in the protection domain of the utility model claims.

Claims

1. the oven dry of brown coal or low rotten long-flame coal or low-temperature pyrolysis device, is characterized in that: this device comprises:

Tunnel type drying chamber, comprises a high temperature section, and the top of described high temperature section is arranged at intervals with a plurality of venting ports, and is provided with a plurality of hot blasts or steam admission port in its bottom or sidepiece;

Coal charger, its speed is controlled, and to discharge end, moves and be installed in tunnel drying shed from the feed end of high temperature section;

Heat source generator, arranges tunnel type drying outdoor, and is communicated with venting port and hot blast or the steam admission port of tunnel type drying chamber, the hot blast that its output temperature, flow velocity and flow are controlled or steam.

2. the oven dry of brown coal as claimed in claim 1 or low rotten long-flame coal or low-temperature pyrolysis device, is characterized in that: on described coal charger, be mounted with a plurality of metal charge pipes, a plurality of metal charge pipes interval arranges.

3. the oven dry of brown coal as claimed in claim 1 or 2 or low rotten long-flame coal or low-temperature pyrolysis device, it is characterized in that: described tunnel type drying chamber also comprises a preheating section, the bottom of preheating section or sidepiece are provided with a plurality of unnecessary tail gas admission ports, by a unnecessary exhaust emission tube road, be communicated with a plurality of venting ports of high temperature section, and be separately provided with a plurality of tail gas and condensate drain outlet.

4. the oven dry of brown coal as claimed in claim 3 or low rotten long-flame coal or low-temperature pyrolysis device, is characterized in that: on the unnecessary exhaust emission tube road that is communicated with the individual unnecessary tail gas admission port of preheating section and the venting port of high temperature section, be provided with a cleaning apparatus.