CN204006029U - The comprehensive drying and incineration system of a kind of built-in mud - Google Patents

The comprehensive drying and incineration system of a kind of built-in mud Download PDF

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Publication number
CN204006029U
CN204006029U CN201420382947.9U CN201420382947U CN204006029U CN 204006029 U CN204006029 U CN 204006029U CN 201420382947 U CN201420382947 U CN 201420382947U CN 204006029 U CN204006029 U CN 204006029U
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China
Prior art keywords
drying box
rotary kiln
conveyer belt
mud
drying
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Expired - Lifetime
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CN201420382947.9U
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Chinese (zh)
Inventor
纪伟勇
李秀朝
张家云
应慧勇
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Zhejiang Sanlian Environmental Protection Technology Co Ltd
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ZHEJIANG SANLIAN ENVIRONMENTAL PROTECTION MACHINERY EQUIPMENT CO Ltd
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  • Treatment Of Sludge (AREA)

Abstract

The utility model provides a kind of sludge drying and burning has been combined, utilize the hot flue gas producing after burning to carry out mummification to mud, remove intermediate flow swivel link from, the comprehensive drying and incineration system of built-in mud of avoiding foul smell to leak, comprise rotary kiln, drying box, secondary combustion chamber and feeder, in drying box, be provided with some conveyer belts that are arranged in parallel from top to bottom, the bottom of drying box is provided with the drying box discharging opening corresponding with the discharge end of orlop conveyer belt, drying box discharging opening is communicated with feeder charging aperture by discharge bucket, the kiln hood of rotary kiln is provided with rotary kiln air inlet, the kiln tail of rotary kiln is provided with rotary kiln air outlet, rotary kiln air outlet is communicated with secondary combustion chamber air inlet, drying box air inlet is arranged at drying box bottom, drying box air outlet is arranged at drying box top, secondary combustion chamber air outlet is communicated with drying box air inlet.

Description

The comprehensive drying and incineration system of a kind of built-in mud
Technical field
The utility model relates to field of sludge treatment, especially relates to the comprehensive drying and incineration system of a kind of built-in mud.
Background technology
In the process of sewage disposal, can produce a large amount of mud, it contains a large amount of organic matters, heavy metal and microorganism etc., conventionally to the processing method of these mud, be landfill or burning, wherein landfill need to take a large amount of soils, and can the larger pollution to the soil reclamation after landfill, land resource waste is serious; Burning disposal is at present to mud solution the most thoroughly, yet mud is after preliminary centrifugal treating, its moisture content is in 80% left and right, the moisture content of mud is higher, cannot directly burn, need to pass through dehydration and drying, make its moisture content be reduced to 20% left and right and just can burn, to the process need high-temperature heating of sludge drying, the consumption of the energy is larger; At present the drying and other treatment of mud and burning disposal are normally divided and are arranged, independently carry out, so equipment investment is larger; Between drying and incineration, also need to add conveying process, the expense of transportation and operation is higher, and easily in transportation, occurs that the problem that foul smell leaks, this series of factors cause the processing cost of mud higher.
Utility model content
In order to overcome above-mentioned deficiency of the prior art, the utility model provides a kind of comprehensive drying and incineration system of built-in mud that combines, utilizes the rear hot flue gas producing of burning to carry out mummification, remove intermediate flow swivel link from, avoid foul smell to leak mud sludge drying and burning.
To achieve these goals, the utility model is by the following technical solutions:
The comprehensive drying and incineration system of a kind of built-in mud of the present utility model, comprise rotary kiln, drying box, be provided with burner secondary combustion chamber and can be to the feeder of charging in rotary kiln, in drying box, be provided with some conveyer belts that are arranged in parallel from top to bottom, adjacent conveyer belt transmission direction discharge end position contrary and top conveyer belt is corresponding with conveyer belt feed end position, below, the bottom of drying box is provided with the drying box discharging opening corresponding with the discharge end of orlop conveyer belt, drying box discharging opening is communicated with feeder charging aperture by discharge bucket, the kiln hood of rotary kiln is provided with rotary kiln air inlet, the kiln tail of rotary kiln is provided with rotary kiln air outlet, rotary kiln air outlet is communicated with secondary combustion chamber air inlet, drying box air inlet is arranged at drying box bottom, drying box air outlet is arranged at drying box top, secondary combustion chamber air outlet is communicated with drying box air inlet.The large calorimetric flue gas producing after mud burns in rotary kiln is after the second-time burning of secondary combustion chamber, from drying box bottom, pass into, contact with the mud of moisture content 80% heat exchange occurs, the mud on each layer of conveyer belt is dried, the also corresponding rising of simultaneous temperature that moisture percentage in sewage sludge reduces.Even if mud moisture content is higher like this, but because mud temperature after heat exchange is higher, thereby also can directly burn, thereby removed transportation from, wait equipment and the operating cost that intermediate flow swivel link produces to drop into, avoided foul smell to leak.
As preferably, described rotary kiln is for being in tilted layout, and the kiln tail of rotary kiln is higher than kiln hood, and described feeder discharging opening is provided with the discharge nozzle that passes into rotary kiln inside from the kiln tail of rotary kiln.Can utilize like this furnace temperature and the rear hot flue gas producing of burning of rotary kiln further to heat and promote mud temperature the mud in discharge nozzle, thereby make mud can be lighted burning rapidly from discharge nozzle is discharged.
As preferably, between described conveyer belt feed end and drying box inwall, be provided with the baffle plate of inclination, baffle plate higher than the side near conveyer belt feed end, is provided with the gas channel that flow direction is contrary with conveyer belt transmission direction near a side of drying box inwall in drying box.The hot like this flue gas gas channel of flowing through in drying box, its flow direction is contrary with conveyer belt transmission direction, by so single guiding air channel, mud is carried out to adverse current mummification, thereby rapidly moisture percentage in sewage sludge is reduced.
As preferably, described rotary kiln is provided with contraction mouth in the one end near kiln tail, is provided with the heat accumulation chamber being communicated with contraction mouth in kiln tail, the relative contraction mouth arranged off-centre of described rotary kiln air outlet, and rotary kiln air outlet place is provided with S shape air channel.By contraction mouth and heat accumulation chamber are set, the time of staying that can further extend hot flue gas, can fully burn, and at kiln tail place accumulation heat, be conducive to keep kiln temperature.Rotary kiln air outlet arranges S shape air channel can further reduce hot flue gas flow rate, improves accumulation of heat effect.In addition, by accumulation of heat, can also further improve the efficiency of heating surface for discharge nozzle, thereby be conducive to improve the speed of charging.
As preferably, described conveyer belt is provided with some along the spaced apart raised line of conveyer belt width direction, is equipped with equally distributed ventilation mesh on described conveyer belt and raised line.Arrange after ventilation mesh and raised line, can improve on the one hand contacting of hot flue gas and mud, make on the other hand hot flue gas after entering drying box, a part flows along the gas channel of conveyer belt and baffle plate formation, another part is through conveyer belt, because the gas flow temperature through conveyer belt is lower, there is temperature difference in two parts air-flow while converging, form microcirculation and can improve drying efficiency.
As preferably, described secondary combustion chamber air inlet place is provided with the arc air inlet duct of arranging along second-time burning chamber interior walls, and direction and the second-time burning chamber interior walls of arc air inlet duct air outlet are tangent.Utilize so tangential air intake, in secondary combustion chamber, form helical form air-flow, both can improve the time of staying of hot flue gas, guarantee the abundant burning of mud volatile matter, be convenient to again dust accumulation after burning to the bottom of secondary combustion chamber.
Therefore, the utlity model has following beneficial effect: (1) carries out combination by sludge drying and burning, reduces intermediate link equipment investment, avoids foul smell to leak; (2) utilize the hot flue gas after sludge incineration to carry out mummification to mud, the thermal efficiency is high, saves the energy; (3) mud of moisture content 80% can directly burn to moisture content 40 ~ 50% in mummification, reduces Treatment of Sludge cost; (4) significantly reduce the generation of bioxin, safety and environmental protection.
Accompanying drawing explanation
Fig. 1 is a kind of structure chart of the present utility model;
Fig. 2 is the flow direction schematic diagram of hot flue gas in the utility model;
Fig. 3 is the structural representation of conveyer belt in the utility model;
Fig. 4 is the profile at secondary combustion chamber top in the utility model.
In figure, drying box 1, drying box air outlet 101, drying box air inlet 102, drying box discharging opening 103, comminutor 2, baffle plate 3, conveyer belt 4, raised line 401, ventilation mesh 402, the arbor wheel 403 of beating, gear wheel 5, reducing gear 6, motor 7, rotary kiln 8, kiln tail 801, heat accumulation chamber 802, contraction mouth 803, kiln hood 804, rotary kiln air inlet 805, rotary kiln air outlet 806, support roller 9, feeder 10, discharge nozzle 10a, secondary combustion chamber 11, secondary combustion chamber air inlet 11a, burner 11b, secondary combustion chamber air outlet 11c, arc air inlet duct 11d, S shape air channel 12, discharge bucket 13.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
In embodiment as shown in Figure 1, the comprehensive drying and incineration system of a kind of built-in mud, comprises rotary kiln 8, drying box 1, secondary combustion chamber 11 and feeder 10.Wherein, the top of drying box 1 is provided with drying box air outlet 101, and the bottom of drying box 1 is provided with drying box air inlet 102 and drying box discharging opening 103.Drying box discharging opening 103 is communicated with feeder 10 charging apertures by discharge bucket 13, the kiln hood 804 of rotary kiln 8 is provided with rotary kiln air inlet 805, the kiln tail 801 of rotary kiln 8 is provided with rotary kiln air outlet 806, rotary kiln air outlet 806 is communicated with secondary combustion chamber air inlet 11a, and secondary combustion chamber air outlet 11c is communicated with drying box air inlet 102.
Rotary kiln 8 completes its support and spacing by support roller 9 and gear wheel 5, and drives its revolutions by motor 7 and reducing gear 6.Rotary kiln 8 is for being in tilted layout, and its kiln tail 801 is higher than kiln hood 804.Rotary kiln 8 is provided with contraction mouth 803 in the one end near kiln tail 801, is provided with the heat accumulation chamber 802 being communicated with contraction mouth 803 in kiln tail 801, relative contraction mouth 803 arranged off-centre of rotary kiln air outlet 806, and rotary kiln air outlet 806 places are provided with S shape air channel 12.Feeder 10 discharging openings are provided with the discharge nozzle 10a that passes into rotary kiln 8 inside from the kiln tail 801 of rotary kiln 8, thereby can in rotary kiln 8, transport mud.In feeder 10, be provided with bipacking-auger mixing arrangement, the mud after mummification can be mixed with fine coal, in discharge nozzle 10a, be provided with screw rod, guarantee that charging is even, prevent mud bridge formation.
In drying box 1, be provided with the conveyer belt 4 being arranged in parallel from top to bottom, in the present embodiment, conveyer belt has five layers, can certainly increase or reduce according to designing requirement.The feed end place of the superiors' conveyer belt is provided with comminutor 2 for charging.Adjacent conveyer belt transmission direction is contrary, is wherein positioned at the conveyer belt of top, and its discharge end position is corresponding with conveyer belt feed end position, below, and mud can fall layer by layer along conveyer belt 4 like this, until fall orlop conveyer belt.Its discharge end of orlop conveyer belt is corresponding with drying box discharging opening 103 positions.
Between conveyer belt 4 feed ends and drying box 1 inwall, be provided with the baffle plate 3 of inclination, baffle plate 3 is near a side of drying box 1 inwall higher than the side near conveyer belt 4 feed ends, and baffle plate 3 has formed gas channel jointly in conjunction with conveyer belt 4.Shown in Fig. 2, hot flue gas flows in drying box 1 from drying box air inlet 102, forms the flow direction gas channel contrary with conveyer belt 4 transmission directions, finally by the air outlet at drying box 1 top, discharges drying box 1.Shown in Fig. 3, conveyer belt 4 is provided with some along the spaced apart raised line 401 of conveyer belt 4 width, is equipped with equally distributed ventilation mesh 402 on conveyer belt 4 and raised line 401.Conveyer belt 4 is provided with the arbor wheel 403 of beating, and in conjunction with the effect of raised line 401, prevents mud and conveyer belt bonding.In addition, on baffle plate 3, vibrator can also be set, can regularly to baffle plate 3, vibrate, prevent that mud is bonded on baffle plate 3.
As shown in Figure 4, in secondary combustion chamber 11, be provided with burner 11b, when hot flue gas enters into secondary combustion chamber 11, can light hot flue gas.Secondary combustion chamber air inlet 11a place is provided with the arc air inlet duct 11d arranging along secondary combustion chamber 11 inwalls, direction and secondary combustion chamber 11 inwalls of arc air inlet duct 11d air outlet are tangent, so that form helical form air-flow in secondary combustion chamber 11, the mixability that improves hot flue gas and air makes its clean-burning while, is convenient to dust accumulation after burning to the bottom of secondary combustion chamber 11.Secondary combustion chamber 11 bottoms can set out cinder notch, so that regularly collect cleaning dust.
The processing process following steps of mud:
(1) mud of moisture content 80% is carried out to sludge drying by drying box, its moisture content drops to 40% ~ 50%.
(2) mud of moisture content 40% ~ 50% is sent into rotary kiln incineration, incineration temperature is 600 ~ 700 ℃, and after sludge incineration, decrement ratio is more than or equal to 85%;
(3) the hot flue gas producing after sludge incineration carries out second-time burning before passing into drying box, and second-time burning after heat flue-gas temperature is 900 ~ 1000 ℃;
(4) through the hot flue gas of step (3) second-time burning, pass into drying box and carry out the sludge drying in step (1), make the moisture percentage in sewage sludge in drying box drop to 40% ~ 50% from 80%, mud temperature finally rises to 280 ~ 300 ℃, and hot flue gas is down to 90 ~ 110 ℃ in drying box air outlet 101 place's temperature simultaneously;
(5) repeating step (2) is to (4).
In step (2), mud increased blend step before burning: in mud, add fine coal, and mud and fine coal are mixed.
In step (2), hot flue gas time of staying in rotary kiln is 2 ~ 4 seconds, and in step (3), the second-time burning time is 3 ~ 6 seconds.
In actual moving process, mud, by comminutor 2, changes into compared with dropping on the superiors' conveyer belt from feed end after loose particles state, carries out mummification successively, until the moisture content of mud drops to 40% ~ 50% through each layer of conveyer belt.Each layer of conveyer belt in drying box 1 controlled by reducing motor independently respectively, can carry out separately speed adjusting, realizes the control for moisture percentage in sewage sludge, thereby while guaranteeing that mud enters feeder 10, moisture control is 40% ~ 50%.
Mud, before entering feeder 10, is introduced in discharge bucket 13, mixes, and stir in feeder 10 in discharge bucket 13 with fine coal, and the screw rod by feeder 10 is sent to mud in rotary kiln 8 and burns.The hot flue gas of sludge incineration is in rotary kiln 8 under contraction mouth 803, heat accumulation chamber 802 and 12 effects of S shape air channel, first can in rotary kiln 8, stop 2 ~ 4 seconds, play accumulation of heat effect, also can heat the feed pipe passing into rotary kiln 8 from kiln tail 801, the mud temperature in feed pipe is further raise simultaneously.
The hot flue gas of discharging from rotary kiln 8 flow into secondary combustion chamber 11, under arc air inlet duct 11d effect, form helical form air-flow in secondary combustion chamber 11, with the abundant mixed combustion of air, temperature reaches 900 ~ 1000 ℃, the time of staying reaches 3 ~ 6 seconds, thereby eliminates bioxin in hot flue gas.Hot flue gas after second-time burning is directly passed in drying box 1, the mud in drying box 1 is carried out to heat exchange, by sludge drying.Moisture percentage in sewage sludge after mummification is 40% ~ 50%, and mud temperature is increased to 280 ~ 300 ℃ simultaneously, so that burn.
Enter the hot flue gas after drying box 1, its part flows along the gas channel of conveyer belt 4 and baffle plate 3 formation, another part is by the ventilation mesh 402 on conveyer belt, from bottom to top through conveyer belt, because the gas flow temperature through conveyer belt is lower, there is temperature difference while converging on conveyer belt top in two parts air-flow, utilizes temperature difference to form microcirculation and can improve drying efficiency.Below temperature energy fast reducing to 350 by so hot flue gas of heat exchange ℃, can effectively prevent the again synthetic of bioxin.Hot flue-gas temperature is finally reduced to 90 ~ 110 ℃, and humidity reaches 20%, from drying box air outlet 101, discharges.Hot flue gas after discharge should be reduced to below 35 degree through further cooling, so as with carry out biological deodorizing and subsequent treatment.

Claims (6)

1. the comprehensive drying and incineration system of built-in mud, it is characterized in that, comprise rotary kiln (8), drying box (1), be provided with burner (11b) secondary combustion chamber (11) and can be to the feeder (10) of the interior charging of rotary kiln (8), in drying box (1), be provided with some conveyer belts that are arranged in parallel from top to bottom (4), adjacent conveyer belt transmission direction discharge end position contrary and top conveyer belt is corresponding with conveyer belt feed end position, below, the bottom of drying box (1) is provided with the drying box discharging opening (103) corresponding with the discharge end of orlop conveyer belt, drying box discharging opening (103) is communicated with feeder (10) charging aperture by discharge bucket (13), the kiln hood (804) of rotary kiln (8) is provided with rotary kiln air inlet (805), the kiln tail (801) of rotary kiln (8) is provided with rotary kiln air outlet (806), rotary kiln air outlet (806) is communicated with secondary combustion chamber air inlet (11a), drying box air inlet (102) is arranged at drying box (1) bottom, drying box air outlet (101) is arranged at drying box (1) top, secondary combustion chamber air outlet (11c) is communicated with drying box air inlet (102).
2. the comprehensive drying and incineration system of a kind of built-in mud according to claim 1, it is characterized in that, described rotary kiln (8) is for being in tilted layout, the kiln tail (801) of rotary kiln (8) is higher than kiln hood (804), and described feeder (10) discharging opening is provided with from the kiln tail (801) of rotary kiln (8) and passes into the inner discharge nozzle (10a) of rotary kiln (8).
3. the comprehensive drying and incineration system of a kind of built-in mud according to claim 1, it is characterized in that, between described conveyer belt (4) feed end and drying box (1) inwall, be provided with the baffle plate (3) of inclination, one side of close drying box (1) inwall of baffle plate (3), higher than the side near conveyer belt (4) feed end, is provided with the gas channel that flow direction is contrary with conveyer belt (4) transmission direction in drying box (1).
4. according to the comprehensive drying and incineration system of a kind of built-in mud described in claim 1 or 2 or 3, it is characterized in that, described rotary kiln (8) is provided with contraction mouth (803) in the one end near kiln tail (801), in kiln tail (801), be provided with the heat accumulation chamber (802) being communicated with contraction mouth (803), described rotary kiln air outlet (806) is contraction mouth (803) arranged off-centre relatively, and rotary kiln air outlet (806) locates to be provided with S shape air channel (12).
5. according to the comprehensive drying and incineration system of a kind of built-in mud described in claim 1 or 2 or 3, it is characterized in that, described conveyer belt (4) is provided with some along the spaced apart raised line of conveyer belt (4) width (401), on described conveyer belt (4) and raised line (401), is equipped with equally distributed ventilation mesh (402).
6. according to the comprehensive drying and incineration system of a kind of built-in mud described in claim 1 or 2 or 3, it is characterized in that, described secondary combustion chamber air inlet (11a) is located to be provided with the arc air inlet duct (11d) of arranging along secondary combustion chamber (11) inwall, and direction and secondary combustion chamber (11) inwall of arc air inlet duct (11d) air outlet are tangent.
CN201420382947.9U 2014-07-11 2014-07-11 The comprehensive drying and incineration system of a kind of built-in mud Expired - Lifetime CN204006029U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105000781A (en) * 2015-07-23 2015-10-28 柳州市德缘科技开发有限责任公司 Microwave filtered mud drying device
CN105036511A (en) * 2015-07-23 2015-11-11 柳州市德缘科技开发有限责任公司 Sugar refinery filter mud microwave dewatering and drying treatment process and dewatering and drying device
CN105066606A (en) * 2015-09-05 2015-11-18 吉首大学 Waste heat drying rotary kiln
CN105090993A (en) * 2014-07-11 2015-11-25 浙江三联环保机械设备有限公司 Built-in comprehensive drying and incinerating system for sludge and drying and incinerating method for sludge
CN105180645A (en) * 2015-09-05 2015-12-23 吉首大学 Rotary kiln system capable of utilizing residual heat for stoving and with no dirt retention on induced draft fan
CN105387697A (en) * 2015-10-08 2016-03-09 镇江裕久智能装备股份有限公司 Aluminum skimming drying machine
CN107185339A (en) * 2017-06-02 2017-09-22 江阴市红柳被单厂有限公司 Sizing oil smoke high-efficient treatment device and processing method that a kind of antistatic is produced
CN110422987A (en) * 2019-07-05 2019-11-08 苏州鑫达资源再生利用有限公司 A kind of drying method for sludge and sludge drying mechanism

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090993A (en) * 2014-07-11 2015-11-25 浙江三联环保机械设备有限公司 Built-in comprehensive drying and incinerating system for sludge and drying and incinerating method for sludge
CN105090993B (en) * 2014-07-11 2017-04-26 浙江三联环保科技股份有限公司 Built-in comprehensive drying and incinerating system for sludge and drying and incinerating method for sludge
CN105000781A (en) * 2015-07-23 2015-10-28 柳州市德缘科技开发有限责任公司 Microwave filtered mud drying device
CN105036511A (en) * 2015-07-23 2015-11-11 柳州市德缘科技开发有限责任公司 Sugar refinery filter mud microwave dewatering and drying treatment process and dewatering and drying device
CN105036511B (en) * 2015-07-23 2017-02-01 柳州市德缘科技开发有限责任公司 Sugar refinery filter mud microwave dewatering and drying treatment process and dewatering and drying device
CN105066606A (en) * 2015-09-05 2015-11-18 吉首大学 Waste heat drying rotary kiln
CN105180645A (en) * 2015-09-05 2015-12-23 吉首大学 Rotary kiln system capable of utilizing residual heat for stoving and with no dirt retention on induced draft fan
CN105387697A (en) * 2015-10-08 2016-03-09 镇江裕久智能装备股份有限公司 Aluminum skimming drying machine
CN107185339A (en) * 2017-06-02 2017-09-22 江阴市红柳被单厂有限公司 Sizing oil smoke high-efficient treatment device and processing method that a kind of antistatic is produced
CN110422987A (en) * 2019-07-05 2019-11-08 苏州鑫达资源再生利用有限公司 A kind of drying method for sludge and sludge drying mechanism

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EE01 Entry into force of recordation of patent licensing contract

Assignee: ZHEJIANG SANLIAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD.

Assignor: Zhejiang Sanlian Environmental Protection Machinery Equipment Co., Ltd.

Contract record no.: 2016330000008

Denomination of utility model: Built-in comprehensive drying and incinerating system for sludge and drying and incinerating method for sludge

Granted publication date: 20141210

License type: Exclusive License

Record date: 20160223

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
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Address after: 323000 Zhejiang Province Cloud Road Lishui Shuige Industrial Zone No. 94

Patentee after: ZHEJIANG SANLIAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD.

Address before: 323000 Zhejiang Province Cloud Road Lishui Shuige Industrial Park No. 94

Patentee before: Zhejiang Sanlian Environmental Protection Machinery Equipment Co., Ltd.