CN201351143Y

CN201351143Y - Dust-removing and desulfurization environment-friendly lime kiln

Info

Publication number: CN201351143Y
Application number: CNU200920101523XU
Authority: CN
Inventors: 丁眉忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-11
Filing date: 2009-02-11
Publication date: 2009-11-25
Anticipated expiration: 2019-02-11

Abstract

The utility model relates to the technical field of lime kilns, in particular to a dust-removing and desulfurization environment-friendly lime kiln for solving the problems that smoke and dust emission from the prior lime kiln does not meet standards, thereby polluting the environment and affecting physical and mental health of workers. The dust-removing and desulfurization environment-friendly lime kiln comprises a kiln body, a furnace is arranged in the kiln body, a lime discharge outlet is arranged at the bottom part of the furnace, a pot-shaped kiln cover is arranged at the top part of the furnace, and a feed inlet is formed at the center of the kiln cover; an annular smoke and dust exhaust pipe is sleeved at the top part of the furnace and positioned below the kiln cover, a smoke and dust outlet which is communicated with the annular smoke and dust exhaust pipe is formed on the circumference of the inner wall of the furnace, one side of the annular smoke and dust exhaust pipe is connected with a smoke and dust exhaust header pipe, and a primary induced draft fan and a primary lime water tank are arranged on the smoke and dust exhaust header pipe; a secondary induced draft fan and a secondary lime water tank are arranged on the smoke and dust exhaust header pipe which passes through the primary lime water tank, the repeated desulfurization and dust-removing treatment is carried out, thereby having no waste water or waste gas, achieving or exceeding the national emission standards, being in line with the requirements on energy conservation and emission reduction, reducing energy consumption, leading the structure to be simple and practical, lowering the cost and having certain promotional value and using value.

Description

Dust-removal and desulfurizing environmental protection limestone kiln

Technical field

The utility model relates to the lime burner furnace technical field, is specially a kind of dust-removal and desulfurizing environmental protection limestone kiln.

Background technology

The equipment of lime calcining mainly is roasting kiln at present, producing lime at home mostly is by roasting method production with traditional limestone kiln, with the Wingdale is raw material, and Wingdale contains lime carbonate, the calcium-oxide of making a living after the burning, soak and be white lime calcium hydroxide, concrete sintering procedure is in lime burner furnace, spreads at the bottom of kiln, and one deck Wingdale one deck coal pushes up until kiln, burn from bottom fire hall stomion fire then, after several days at the bottom of the kiln discharge port just can go out lime.In the sintering procedure, because burning is insufficient, black smoke is billowing in the output zone, dust is all over the sky, mostly directly enter the atmosphere, and contain a large amount of sulfide in the black smoke, polluted surrounding environment greatly from the kiln top, do not meet the environmental requirement of country, the more important thing is workman's physical and mental health has been caused very big influence soot emissions.

Summary of the invention

The utility model is not up to standard in order to solve in the sintering procedure of existing limestone kiln soot emissions, and contaminate environment influences the able-bodied problem of workman, and a kind of dust-removal and desulfurizing environmental protection limestone kiln is provided.

The utility model is to adopt following technical scheme to realize: dust-removal and desulfurizing environmental protection limestone kiln, comprise the kiln body, be provided with burner hearth in the kiln body, burner hearth bottom is provided with the lime discharge port, innovative point of the present utility model is that roof of the furnace is provided with the pot shape kiln lid airtight with it, and the Yao Gai center has charging opening; Roof of the furnace and be positioned at kiln lid below and be set with ring-type soot emissions pipe, the inboard wall of burner hearth border has the flue dust outlet that is communicated with ring-type soot emissions pipe, ring-type soot emissions pipe one side is connected with the soot emissions house steward, a lime pond of an induced draft fan being housed on the soot emissions house steward and being communicated with an induced draft fan outlet.The volume of smoke that produces in the burner hearth of limestone kiln, under the effect of an induced draft fan, the flue dust outlet that is positioned at different directions from kiln lid below sucks ring-type soot emissions pipe, soot emissions house steward successively, an airtight lime pond of final suction, clean, react, decompose, make calcium, sulphur and other dust in the flue dust sink at the bottom of the pond, and the tar that contains is kept afloat, purified gas is through the total tube drainage of soot emissions.Calcium carbonate aqueous solution is equipped with in above-mentioned lime pond, and is as follows with the reaction mechanism of sulfide in the flue dust:

CaCO ₃+ SO ₂+ H ₂O → CaSO ₄↓+H ₂↑+H ₂O+CO ₂↑, this shows that the sulfide in the flue dust is converted into alkali solid through transforming postprecipitation in basin bottom, and the gas that enters in the atmosphere is clean hydrogen and carbonic acid gas.

In order further to optimize the structure in this limestone kiln, the utility model also comprises following structure design, the secondary lime pond of the secondary induced draft fan also being housed on the soot emissions house steward through a lime pond and being communicated with the outlet of secondary induced draft fan, can carry out secondary desulfurization, final dusting, play further cleaning action; Described flue dust outlet is evenly distributed on the inboard wall of burner hearth border, and the flue dust in the burner hearth is evenly risen along whole kiln body; Described ring-type soot emissions pipe and soot emissions house steward are magnetic tube, have advantages such as high temperature resistant, long service life.

Compared with prior art, the waste gas that limestone kiln described in the utility model produces is through desulfurization and dedusting processing repeatedly, expellant gas is pure and fresh, do not have waste water, reach and exceed discharging standards, meet the requirement of energy-saving and emission-reduction, and reduced energy consumption, the features simple structure practicality, cost is lower, has certain popularization value and use value.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the structural representation of pot shape kiln lid and ring-type soot emissions pipe and soot emissions house steward among Fig. 1

Among the figure: 1-kiln body 2-burner hearth 3-lime discharge port 4-kiln lid 5-charging opening 6-ring-type soot emissions pipe 7-flue dust outlet 11-secondary induced draft fan 12-secondary lime pond, a lime pond of a 8-soot emissions induced draft fan 10-of house steward 9-

Embodiment

Dust-removal and desulfurizing environmental protection limestone kiln, as shown in Figure 1, the direction of arrow is the gas trend among the figure, comprise kiln body 1, be provided with burner hearth 2 in the kiln body 1, burner hearth 2 bottoms have lime discharge port 3, and burner hearth 2 tops are provided with the pot shape kiln lid 4 airtight with it, kiln covers 4 centers and has charging opening 5, and the charging opening top also is equipped with gas blower; As shown in Figure 2, burner hearth 2 tops and be positioned at kiln and cover 4 belows and be set with ring-type soot emissions pipe 6, burner hearth 2 inwall borders have the flue dust outlet 7 that is communicated with ring-type soot emissions pipe 6, quantity is 3 and uniform distribution, ring-type soot emissions pipe 6 one sides are connected with soot emissions house steward 8, a lime pond 10 of an induced draft fan 9 being housed on the soot emissions house steward 8 and being communicated with an induced draft fan outlet, the secondary lime pond 12 of secondary induced draft fan 11 also being housed on the soot emissions house steward 8 through a lime pond 10 and being communicated with the outlet of secondary induced draft fan; Ring-type soot emissions pipe 6 and soot emissions house steward 8 are magnetic tube.

Claims

1, a kind of dust-removal and desulfurizing environmental protection limestone kiln, comprise kiln body (1), be provided with burner hearth (2) in the kiln body (1), burner hearth (2) bottom is provided with lime discharge port (3), it is characterized in that burner hearth (2) top is provided with the pot shape kiln lid (4) airtight with it, kiln lid (4) center has charging opening (5); Burner hearth (2) top and be positioned at kiln lid (4) below and be set with ring-type soot emissions pipe (6), burner hearth (2) inwall border has the flue dust outlet (7) that is communicated with ring-type soot emissions pipe (6), ring-type soot emissions pipe (6) one sides are connected with soot emissions house steward (8), a lime pond (10) of an induced draft fan (9) being housed on the soot emissions house steward (8) and being communicated with an induced draft fan outlet.

2, dust-removal and desulfurizing environmental protection according to claim 1 limestone kiln is characterized in that the secondary lime pond (12) of secondary induced draft fan (11) also being housed on the soot emissions house steward (8) through a lime pond (10) and being communicated with the outlet of secondary induced draft fan.

3, dust-removal and desulfurizing environmental protection according to claim 1 and 2 limestone kiln is characterized in that flue dust outlet (7) is evenly distributed on burner hearth (2) inwall border.

4, dust-removal and desulfurizing environmental protection according to claim 1 and 2 limestone kiln is characterized in that ring-type soot emissions pipe (6) and soot emissions house steward (8) are magnetic tube.