CN101343073B

CN101343073B - Dewatering industrial stove for carnaillite hydrous chloromagnesite

Info

Publication number: CN101343073B
Application number: CN200810096524XA
Authority: CN
Inventors: 部燕茹; 熊凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-12
Filing date: 2008-05-12
Publication date: 2010-06-09
Anticipated expiration: 2028-05-12
Also published as: CN101343073A

Abstract

The invention belongs to the chemical machinery field, particularly relating to a dehydration industrial furnace of carnallite plus bischofite. The furnace comprises a coal injection machine, a dust catcher, a furnace body, a smoke-steam recovery device, etc., wherein, a combustion chamber, one to four heating chambers communicated with one another in series, and one to two preheating chambers are arranged in the furnace body, the coal injection machine is communicated with the combustion chamber, the combustion chamber is communicated with the heating chambers, one to four reaction kettles are disposed in the heating chamber, one to four preheating kettles are arranged in the preheating chambers, fire-separating walls are disposed in the heating chamber and the preheating chambers, the preheating chambers are connected with the dust catcher, and a tail gas recovery pipe is communicated with a sealing cover and is connected with a fan. The dehydration industrial furnace has the advantages of simple structure, convenient operation, effectively controlling environmental pollution, eliminating potential safety hazards, meeting the process requirements, stable product quality and low energy consumption.

Description

A kind of dehydration industrial furnace of carnaillite water feeding chloromagnesite

One, technical field:

The invention belongs to chemical machinery field, particularly a kind of dehydration industrial furnace of carnaillite water feeding chloromagnesite.

Two, background technology:

The magnesium resource of China is very abundant, and only the reserves in Qinghai Cha Erhan salt lake are just up to 16.7 hundred million tons, mainly with bischofite (MgCl ₂6H ₂O) form existence also is enriched in natural carnallitite (KClMgCl ₂6H ₂O) in.In the existing technology, carnallitite and bischofite are mixed, putting into cauldron heats, be heated to discharging behind the dewatering state and promptly get the dehydrating prods of carnallitite bischofite, though this method is simple, its environmental pollution is big, often cause pot accident that collapses, potential safety hazard is big, and unstable product quality, the energy consumption height.

Three, Fa Ming content

The dehydration industrial furnace that the purpose of this invention is to provide a kind of carnaillite water feeding chloromagnesite, it is by coal powder injection machine (2), fly-ash separator (7), body of heater (15), compositions such as flue gas retrieving arrangement, be provided with a combustion chamber (3) in the body of heater (15), 1-4 the heating chamber (16) that series connection is communicated with, 1-2 preheating chamber (17), coal powder injection machine (2) is connected with combustion chamber (3), combustion chamber (3) is connected with heating chamber (16), be provided with 1-4 reactor (5) in each heating chamber (16), reactor (5) supports with bearing (4) and is unsettled, heating chamber (16) is connected with preheating chamber (17), be provided with 1-4 still preheater (18) in the preheating chamber (17), still preheater (18) supports with bearing (4) and is unsettled, the still mouth of still preheater (18) is higher than the still mouth of reactor (5), be provided with heated-separated wall (12) in heating chamber (16) and the preheating chamber (17), the runner setting of high-temperature flue gas is pressed in the setting of heated-separated wall, preheating chamber (17) is connected with exhanst gas outlet (6), exhanst gas outlet (6) is connected with fly-ash separator (7), fly-ash separator (7) is connected with evacuated tube (8), body of heater (15) is built into refractory brick, add thermal insulation layer, reactor (5) is the standard-sized sheet mouth, the reactor mouth stretches out body of heater (15), sealing cover (11) covers at reactor (5) to be gone up and is installed on the body of heater (15), tail gas recycle pipe (13) is connected with sealing cover (11), and link to each other with blower fan (1), sealing cover (11) is provided with input and output material lid (14), input and output material lid (14) is directly over reactor, and filling tube (9) is connected with still preheater (18), and is connected with reactor (5) by valve (10).The present invention is work like this, add carnallitite and auxiliary material at reactor (5) by processing requirement earlier, add bischofite in the still preheater (18), heating flame chamber (3) is to the spontaneously inflammable temperature of coal dust, open coal powder injection machine Coal powder spray in the combustion chamber, the hurried rising of chamber temperature, opening fly-ash separator (7) high-temperature flue gas begins to flow in body of heater, and reacting by heating still (5), high-temperature flue gas tail gas heating still preheater (18), when reactor (5) is heated to technology temperature required (700-800 ℃), open valve (10), the bischofite in the still preheater can join in the reactor (5) lentamente, open blower fan (1), discharge water vapor and tail gas in the reactor, water vapor and tail gas are carried out the technology absorption, reach non-pollution discharge.The present invention has following advantage, and the one, reactor (5) is carried out integral body heating, the heating surface area of reactor (5) is big, less scaling, can not cause to collapse pot phenomenon and take place, and has eliminated the potential safety hazard in the production process and has improved energy utilization rate; The 2nd, utilize waste heat bischofite can be dehydrated into magnesium chloride dihydrate in advance, saved the energy; The 3rd, magnesium chloride dihydrate passes through filling tube (9) can control its feed rate with valve (10) when the reinforced dehydration of reactor, make magnesium chloride dihydrate can be in reactor flash-evaporation dehydration, meet processing requirement, improved quality product; The 4th, by fly-ash separator flue gas has been carried out the dedusting discharging, by blower fan water vapor in the reactor and tail gas (HCl) have been carried out concentrated recovery, utilize processing method can accomplish qualified discharge, so just accomplished the purpose of protection environment; The 5th, series connection is provided with 1-4 heating chamber, and 1-2 preheating chamber rationally utilized the energy fully, accomplished energy-saving and cost-reducing purpose; The 6th, simple in structure, easy to operate and controlled.

Four, description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the B-B sectional view of Fig. 1;

Fig. 3 is the C-C sectional view of Fig. 1;

Fig. 4 is an another kind of structural representation of the present invention;

Fig. 5 is the D-D sectional view of Fig. 4;

Fig. 6 is the E-E sectional view of Fig. 4.

1. blower fans, 2. coal powder injection machines, 3. combustion chambers, 4. bearings, 5. reactors, 6. exhanst gas outlets, 7. fly-ash separators, 8. evacuated tube, 9. filling tubes, 10. valves, 11. sealing covers, 12. heated-separated walls, 13. tail gas recycle pipes, 14. input and output materials cover 15. bodies of heater, 16. heating chambers, 17. preheating chambers, 18. still preheaters among the figure

Five, embodiment

The dehydration industrial furnace of 1 one kinds of carnaillite water feeding chloromagnesites of embodiment, it is by coal powder injection machine (2), fly-ash separator (7), body of heater (15), compositions such as flue gas retrieving arrangement, be provided with a combustion chamber (3) in the body of heater (15), two heating chambers (16), a preheating chamber (17), coal powder injection machine (2) is connected with combustion chamber (3), combustion chamber (3) is connected with heating chamber (16), be provided with two reactors (5) in the heating chamber (16), reactor (5) supports with bearing (4) and is unsettled, heating chamber (16) is connected with preheating chamber (17), be provided with two still preheaters (18) in the preheating chamber (17), still preheater (18) supports with bearing (4) and is unsettled, the still mouth of still preheater (18) is higher than the still mouth of reactor (5), be provided with heated-separated wall (12) in heating chamber (16) and the preheating chamber (17), the runner setting of high-temperature flue gas is pressed in the setting of heated-separated wall, preheating chamber (17) is connected with exhanst gas outlet (6), exhanst gas outlet (6) is connected with fly-ash separator (7), fly-ash separator (7) is connected with evacuated tube (8), body of heater (15) is built into refractory brick, adds thermal insulation layer, and reactor (5) is the standard-sized sheet mouth, the reactor mouth stretches out body of heater (15), sealing cover (11) covers at reactor (5) to be gone up and is installed on the body of heater (15), and tail gas recycle pipe (13) is connected with sealing cover (11), and links to each other with blower fan (1), sealing cover (11) is provided with input and output material lid (14), input and output material lid (14) is directly over reactor, and filling tube (9) is connected with still preheater (18), and is connected with reactor (5) by valve (10).

The dehydration industrial furnace of 2 one kinds of carnaillite water feeding chloromagnesites of embodiment, it is by coal powder injection machine (2), fly-ash separator (7), body of heater (15), compositions such as flue gas retrieving arrangement, be provided with a combustion chamber (3) in the body of heater (15), four heating chambers (16) that series connection is communicated with, a preheating chamber (17), coal powder injection machine (2) is connected with combustion chamber (3), combustion chamber (3) is connected with heating chamber (16), be provided with four reactors (5) in each heating chamber (16), reactor (5) supports with bearing (4) and is unsettled, heating chamber (16) is connected with preheating chamber (17), be provided with two still preheaters (18) in the preheating chamber (17), still preheater (18) supports with bearing (4) and is unsettled, the still mouth of still preheater (18) is higher than the still mouth of reactor (5), be provided with heated-separated wall (12) in heating chamber (16) and the preheating chamber (17), the runner setting of high-temperature flue gas is pressed in the setting of heated-separated wall, preheating chamber (17) is connected with exhanst gas outlet (6), exhanst gas outlet (6) is connected with fly-ash separator (7), fly-ash separator (7) is connected with evacuated tube (8), body of heater (15) is built into refractory brick, add thermal insulation layer, reactor (5) is the standard-sized sheet mouth, the reactor mouth stretches out body of heater (15), sealing cover (11) covers at reactor (5) to be gone up and is installed on the body of heater (15), tail gas recycle pipe (13) is connected with sealing cover (11), and link to each other with blower fan (1), sealing cover (11) is provided with input and output material lid (14), input and output material lid (14) is directly over reactor, and filling tube (9) is connected with still preheater (18), and is connected with reactor (5) by valve (10).

The dehydration industrial furnace of 3 one kinds of carnaillite water feeding chloromagnesites of embodiment, it is by coal powder injection machine (2), fly-ash separator (7), body of heater (15), compositions such as flue gas retrieving arrangement, be provided with a combustion chamber (3) in the body of heater (15), two heating chambers (16) that series connection is communicated with, a preheating chamber (17), coal powder injection machine (2) is connected with combustion chamber (3), combustion chamber (3) is connected with heating chamber (16), be provided with three reactors (5) in each heating chamber (16), reactor (5) supports with bearing (4) and is unsettled, heating chamber (16) is connected with preheating chamber (17), be provided with two still preheaters (18) in the preheating chamber (17), still preheater (18) supports with bearing (4) and is unsettled, the still mouth of still preheater (18) is higher than the still mouth of reactor (5), be provided with heated-separated wall (12) in heating chamber (16) and the preheating chamber (17), the runner setting of high-temperature flue gas is pressed in the setting of heated-separated wall, preheating chamber (17) is connected with exhanst gas outlet (6), exhanst gas outlet (6) is connected with fly-ash separator (7), fly-ash separator (7) is connected with evacuated tube (8), body of heater (15) is built into refractory brick, add thermal insulation layer, reactor (5) is the standard-sized sheet mouth, the reactor mouth stretches out body of heater (15), sealing cover (11) covers at reactor (5) to be gone up and is installed on the body of heater (15), tail gas recycle pipe (13) is connected with sealing cover (11), and link to each other with blower fan (1), sealing cover (11) is provided with input and output material lid (14), input and output material lid (14) is directly over reactor, and filling tube (9) is connected with still preheater (18), and is connected with reactor (5) by valve (10).

Claims

1. the dehydration industrial furnace of a carnaillite water feeding chloromagnesite, it is characterized in that it is by coal powder injection machine (2), fly-ash separator (7), body of heater (15), the flue gas retrieving arrangement is formed, be provided with a combustion chamber (3) in the body of heater (15), 2-4 the heating chamber (16) that series connection is communicated with, 1-2 preheating chamber (17), coal powder injection machine (2) is connected with combustion chamber (3), combustion chamber (3) is connected with heating chamber (16), be provided with 1-4 reactor (5) in each heating chamber (16), reactor (5) supports with bearing (4) and is unsettled, heating chamber (16) is connected with preheating chamber (17), be provided with 1-4 still preheater (18) in the preheating chamber (17), still preheater (18) supports with bearing (4) and is unsettled, the still mouth of still preheater (18) is higher than the still mouth of reactor (5), be provided with heated-separated wall (12) in heating chamber (16) and the preheating chamber (17), the runner setting of high-temperature flue gas is pressed in the setting of heated-separated wall, preheating chamber (17) is connected with exhanst gas outlet (6), exhanst gas outlet (6) is connected with fly-ash separator (7), fly-ash separator (7) is connected with evacuated tube (8), body of heater (15) is built into refractory brick, add thermal insulation layer, reactor (5) is the standard-sized sheet mouth, the reactor mouth stretches out body of heater (15), sealing cover (11) covers at reactor (5) to be gone up and is installed on the body of heater (15), tail gas recycle pipe (13) is connected with sealing cover (11), and link to each other with blower fan (1), sealing cover (11) is provided with input and output material lid (14), input and output material lid (14) is directly over reactor, and filling tube (9) is connected with still preheater (18), and is connected with reactor (5) by valve (10).