CN213506523U

CN213506523U - Sludge drying device utilizing waste heat of flue gas of thermal power plant

Info

Publication number: CN213506523U
Application number: CN202021847226.2U
Authority: CN
Inventors: 杜红卫; 翁焕新; 张微
Original assignee: Zhejiang Huichao Environmental Protection Technology Co ltd
Current assignee: Zhejiang Huichao Environmental Protection Technology Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-06-22
Anticipated expiration: 2030-08-28

Abstract

The utility model provides an utilize sludge drying device of thermal power plant flue gas waste heat, including first gyration drying kiln and second gyration drying kiln, the afterbody of first gyration drying kiln, second gyration drying kiln all passes through pipe connection cyclone, cyclone connects water film dust collector through the manifold, water film dust collector passes through the pipe connection exhaust draught fan, the exhaust draught fan passes through the pipe connection chimney, all be equipped with the dust cage directly over first gyration drying kiln feed inlet and the second gyration drying kiln feed inlet, the dust cage surface mounting has the connecting pipe, the one end that the dust cage was kept away from to the connecting pipe links to each other with cyclone and communicates with each other, compares with prior art, the utility model discloses following beneficial effect has: the dust flying at the feed inlet of the rotary drying kiln can be collected in a centralized manner, and the dust flying can be prevented from flying randomly in the working environment to influence the sanitation and the air quality of the working environment.

Description

Sludge drying device utilizing waste heat of flue gas of thermal power plant

Technical Field

The utility model relates to an utilize sludge drying device of steam power plant flue gas waste heat belongs to sludge treatment technical field.

Background

With the rapid development of the economy of China and the rapid growth of urban population, the quantity of urban sewage is continuously increased, meanwhile, the requirement of people on the environmental quality is higher and higher, the treatment rate of industrial wastewater and urban domestic sewage is also continuously improved, which means that the quantity of sludge in sewage treatment plants is increased day by day. The rotary drying kilns are main equipment for sludge drying treatment, and at present, when locally dried sludge is transferred between two adjacent rotary drying kilns, part of the dried sludge easily generates dust at a feed inlet of the rotary drying kilns and is scattered in a working environment at will, so that the air quality of the working environment is influenced, and the working environment is dirty and messy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an utilize sludge drying device of steam power plant flue gas waste heat to when proposing the mud by local mummification and shifting between two adjacent rotary drying kilns in solving above-mentioned background art, the part is by the mud of mummification easily in rotary drying kiln's feed inlet department produce raise dust and waft at will in operational environment, influences operational environment's air quality, and causes the dirty indiscriminate poor problem of operational environment, the utility model discloses realize concentrating the raise dust of collecting rotary drying kiln feed inlet department and wafting.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides an utilize sludge drying device of steam power plant flue gas waste heat, includes first gyration drying kiln and second gyration drying kiln, the afterbody of first gyration drying kiln, second gyration drying kiln all passes through pipe connection cyclone, cyclone connects water dust collector through the collection union coupling, water dust collector passes through the pipe connection draught fan that exhausts, the draught fan that exhausts passes through the pipe connection chimney, all be equipped with the dust cage directly over first gyration drying kiln feed inlet and the second gyration drying kiln feed inlet, dust cage surface mounting has the connecting pipe, the one end that the dust cage was kept away from to the connecting pipe links to each other with cyclone and communicates with each other.

Further, first gyration drying kiln and second gyration drying kiln inlet end are connected with the cloth tuber pipe, the air feed draught fan is connected to the cloth tuber pipe other end, the air feed draught fan gives vent to anger the end through the pipe connection boiler.

Further, be equipped with electrostatic precipitator between air feed draught fan and the boiler, electrostatic precipitator is connected with the boiler through the pipeline, electrostatic precipitator end of giving vent to anger is through the pipe connection air feed draught fan.

Furthermore, the discharge end of the second rotary drying kiln is connected with a conveyer belt, one end of the conveyer belt, which is far away from the second rotary drying kiln, is connected with a bucket belt type elevator, and the other end of the bucket belt type elevator extends to the feed inlet of the first rotary drying kiln.

Furthermore, a stop valve is installed at one end, far away from the dust collection cover, of the connecting pipe, and the other end of the stop valve is communicated with the cyclone dust collector.

Furthermore, a plurality of supporting rods are uniformly arranged on the lower surface of the dust collection cover, and the lower ends of the supporting rods are fixedly connected with a bottom plate with round holes.

The utility model has the advantages that: all set up the dust cage directly over first gyration drying kiln feed inlet and second gyration drying kiln feed inlet, and utilize the connecting pipe to connect dust cage and cyclone, and then under the influence of exhaust draught fan work, the raise dust that wafts around the dust cage flows to the dust cage along with the air in, and get into the cyclone through the connecting pipe in, chimney discharge after cyclone and water film dust remover remove dust, realize concentrating the raise dust that collects gyration drying kiln feed inlet department and waft, prevent that the raise dust from wafting at will and influence operational environment's health and air quality in operational environment.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a sludge drying apparatus using waste heat of flue gas from a thermal power plant according to the present invention;

FIG. 2 is a schematic view showing the assembly of a support rod and a dust hood in the sludge drying apparatus using the residual heat of the flue gas from the thermal power plant of the present invention;

in the figure: 1-a first rotary drying kiln, 2-a dust collecting hood, 3-a bucket belt type elevator, 4-an electrostatic dust collector, 5-a boiler, 6-an air supply induced draft fan, 7-an air distribution pipe, 8-a second rotary drying kiln, 9-a conveying belt, 10-a collecting pipe, 11-a water film dust collector, 12-an exhaust induced draft fan, 13-a chimney, 14-a stop valve, 15-a cyclone dust collector, 16-a connecting pipe, 17-a supporting rod and 18-a bottom plate.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides an utilize sludge drying device of steam power plant flue gas waste heat, including first gyration drying kiln 1 and second gyration drying kiln 8, first gyration drying kiln 1, the afterbody of second gyration drying kiln 8 all passes through pipe connection cyclone 15, cyclone 15 connects water film dust collector 11 through header pipe 10, water film dust collector 11 passes through pipe connection exhaust induced draft fan 12, exhaust induced draft fan 12 passes through pipe connection chimney 13, at first gyration drying kiln 1 and then second gyration drying kiln 8's afterbody installation cyclone 15, detach most dust of tail gas, individual water film dust collector 11 again, further remove dust and degasser, then send into chimney 13 with exhaust induced draft fan 12 with the tail gas that reaches atmospheric emission standard.

A dust hood 2 is arranged right above the feed inlet of the first rotary drying kiln 1 and right above the feed inlet of the second rotary drying kiln 8, a connecting pipe 16 is arranged on the outer surface of the dust hood 2, one end of the connecting pipe 16 far away from the dust hood 2 is communicated with a cyclone dust collector 15, dust hoods 2 are respectively arranged right above the feed inlet of the first rotary drying kiln 1 and the feed inlet of the second rotary drying kiln 8, the dust hoods 2 and the cyclone dust collector 15 are connected by a connecting pipe 16, further, under the influence of the work of the exhaust induced draft fan 12, the flying dust floating around the dust collection cover 2 flows into the dust collection cover 2 along with the air, and enters the cyclone dust collector 15 through the connecting pipe 16, and is discharged from the chimney 13 after being dedusted by the cyclone dust collector 15 and the water film dust collector 11, so that the raised dust scattered at the feed inlet of the rotary drying kiln is collected in a centralized manner, and the raised dust is prevented from being scattered randomly in the working environment to influence the sanitation and the air quality of the working environment.

First gyration drying kiln 1 and the 8 inlet ends of second gyration drying kiln are connected with air distribution pipe 7, air feed draught fan 6 is connected to the air distribution pipe 7 other end, air feed draught fan 6 gives vent to anger the end through pipe connection boiler 5, behind the circuit of switch-on air feed draught fan 6, receive the influence of air feed draught fan 6 work, boiler 5 contains the tail gas of temperature and is carried to first gyration drying kiln 1 and second gyration drying kiln 8 in, the realization utilizes the purpose of steam power plant flue gas waste heat mummification mud.

An electrostatic dust collector 4 is arranged between the air supply induced draft fan 6 and the boiler 5, the electrostatic dust collector 4 is connected with the boiler 5 through a pipeline, the air outlet end of the electrostatic dust collector 4 is connected with the air supply induced draft fan 6 through a pipeline, and the electrostatic dust collector 4 is arranged between the air supply induced draft fan 6 and the boiler 5, so that the smoke and dust in the smoke can be conveniently removed.

The conveyer belt 9 is connected to the discharge end of second gyration drying kiln 8, and the one end connection hopper belt elevator 3 of second gyration drying kiln 8 is kept away from to conveyer belt 9, and the 3 other ends of hopper belt elevator extend to first gyration drying kiln 1 feed inlet department, and conveyer belt 9 and hopper belt elevator 3 shift the mud material in the second gyration drying kiln 8 to in the first gyration drying kiln 1 jointly.

The one end that connecting pipe 16 kept away from dust cage 2 is installed stop valve 14, and the stop valve 14 other end links to each other with cyclone 15 and communicates with each other, when stopping reinforced, closes stop valve 14, improves the effect that exhaust draught fan 12 extracted waste gas in first gyration drying kiln 1 and the second gyration drying kiln 8.

A plurality of supporting rods 17 are uniformly arranged on the lower surface of the dust hood 2, the lower ends of the supporting rods 17 are fixedly connected with a bottom plate 18 with circular holes, and the bottom plate 18 is arranged at the proper positions of the first rotary drying kiln 1 and the second rotary drying kiln 8 by bolts to complete the fixation of the position of the dust hood 2.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an utilize sludge drying device of steam power plant flue gas waste heat, includes first gyration drying kiln (1) and second gyration drying kiln (8), its characterized in that: the afterbody of first gyration drying kiln (1), second gyration drying kiln (8) all passes through pipe connection cyclone (15), cyclone (15) are through collecting main (10) connection water film dust collector (11), water film dust collector (11) are through pipe connection exhaust draught fan (12), exhaust draught fan (12) are through pipe connection chimney (13), all be equipped with dust cage (2) directly over first gyration drying kiln (1) feed inlet and second gyration drying kiln (8) feed inlet, dust cage (2) surface mounting has connecting pipe (16), the one end that dust cage (2) were kept away from in connecting pipe (16) links to each other with cyclone (15) and communicates with each other.

2. The sludge drying device using the residual heat of the flue gas of the thermal power plant as claimed in claim 1, wherein: the air inlet ends of the first rotary drying kiln (1) and the second rotary drying kiln (8) are connected with an air distribution pipe (7), and the other end of the air distribution pipe (7) is connected with the air outlet end of the boiler (5).

3. The sludge drying device using the residual heat of the flue gas of the thermal power plant as claimed in claim 2, wherein: be equipped with electrostatic precipitator (4) between cloth tuber pipe (7) and boiler (5), electrostatic precipitator (4) are connected with boiler (5) through the pipeline, electrostatic precipitator (4) are given vent to anger the end and are passed through pipe connection air feed draught fan (6), air feed draught fan (6) are through pipe connection cloth tuber pipe (7).

4. The sludge drying device using the residual heat of the flue gas of the thermal power plant as claimed in claim 1, wherein: the discharge end of second rotary drying kiln (8) is connected conveyer belt (9), the one end connection hopper belt elevator (3) of second rotary drying kiln (8) is kept away from in conveyer belt (9), hopper belt elevator (3) other end extends to first rotary drying kiln (1) feed inlet department.

5. The sludge drying device using the residual heat of the flue gas of the thermal power plant as claimed in claim 1, wherein: and a stop valve (14) is arranged at one end of the connecting pipe (16) far away from the dust collection cover (2), and the other end of the stop valve (14) is communicated with the cyclone dust collector (15).

6. The sludge drying device using the residual heat of the flue gas of the thermal power plant as claimed in claim 1, wherein: a plurality of supporting rods (17) are uniformly arranged on the lower surface of the dust collection cover (2), and a bottom plate (18) connected with a circular hole is fixed at the lower end of each supporting rod (17).