CN214456966U - High-concentration organic sewage vaporization and catalytic incineration equipment - Google Patents
High-concentration organic sewage vaporization and catalytic incineration equipment Download PDFInfo
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Abstract
The utility model provides a high-concentration organic sewage vaporizing and catalytic incineration device, which comprises an evaporation heater, a gas-liquid separator, a heat storage incinerator, a steam compressor, a circulating water pump and a heat exchanger, wherein a refrigerant outlet of the heat exchanger is communicated with the gas-liquid separator; the gas-liquid separator is communicated with the tube pass inlet of the evaporation heater, and the tube pass outlet of the evaporation heater is communicated with the gas-liquid separator; the secondary steam outlet of the gas-liquid separator is communicated with the heat accumulation incinerator through the outlet of a steam compressor, and the steam outlet of the heat accumulation incinerator is communicated with the shell pass inlet of the evaporation heater; the shell pass condensate water outlet of the evaporation heater is communicated with the heat medium inlet of the heat exchanger; the combustion chamber of the regenerative incinerator comprises a combustion chamber and a plurality of regenerative chambers communicated with the combustion chamber; the outlet of the steam compressor is communicated with the heat storage chambers, and each heat storage chamber of the heat storage incinerator is provided with a secondary steam reversing valve. The utility model is used for the decomposition and oxidation of pollutants in the secondary steam treatment in the processes of high-concentration organic sewage vaporization and catalytic incineration.
Description
Technical Field
The utility model relates to a sewage treatment technique especially relates to a high concentration organic sewage vaporization, catalytic incineration equipment.
Background
Chemical enterprises in the industries of coal chemical industry, petrochemical industry and the like usually generate a large amount of organic sewage in production. Due to the difference of the production products and the production processes, the types and the concentrations of organic pollutants and harmful chemical substances in the produced organic wastewater are greatly changed. For example, organic sewage generated by coal chemical and petrochemical enterprises contains dozens of toxic and harmful pollutants represented by aromatic hydrocarbons, ammonia, hydrogen sulfide and other pollutants, and the COD concentration of the organic sewage reaches more than 5-20 g/l. A large amount of high-concentration organic polluted sewage is also generated in the industries of municipal waste treatment, pharmacy, food and the like. Contain ammonia, hydrogen sulfide, organic pollutant in the leachate that municipal industry landfill produced, leachate COD reaches 3000 ~ 20000 mg/l. The toxic and harmful organic pollutants in the sewage usually have the characteristics of good chemical stability and poor biodegradability, and are difficult to decompose by adopting a chemical oxidation method and a biological degradation method under the normal temperature condition. In the aspect of sewage treatment, coal chemical industry and petrochemical industry enterprises widely adopt the technologies of solvent extraction, steam desorption, biodegradation, chemical oxidation, electrochemical oxidation, membrane filtration and the like. The technology has certain effect on treating organic sewage, but has the problems of high treatment cost, long process flow and large investment on treatment devices. In order to meet the requirements of environmental standards, sewage treatment technologies meeting the requirements of the environmental standards are urgently needed by the chemical enterprises.
The incineration method is an effective method for treating high-concentration organic sewage, and under the condition of keeping the temperature in the incinerator to be about 1100 ℃, the high-concentration organic sewage is sprayed into the incinerator through an atomizing nozzle to be combusted, so that organic pollutants in the sewage are oxidized and decomposed. Under the conditions of large organic sewage amount and high inorganic salt content, the process has the problems of large fuel gas consumption, long process flow of flue gas purification treatment process, high investment and high operating cost. The evaporation concentration process is a common treatment method for high-salt organic sewage concentration decrement discharge, a heat pump technology of a vapor compressor (MVR) is widely used in the evaporation concentration process, the sewage is subjected to heat exchange vaporization with secondary vapor after being pressurized by the vapor compressor (MVR) through an evaporator, the vapor is condensed into water to be discharged, and inorganic salt in the high-salt sewage is extracted from a concentrated solution through a crystallization process. The process has the characteristics of simple flow and low energy consumption. When the evaporation concentration process is used for treating high-concentration organic sewage containing volatile pollutants (ammonia, hydrogen sulfide, VOC and the like), the concentration of the volatile organic matters is increased in the evaporation concentration process of the sewage, so that a large amount of volatile organic matters enter secondary steam, so that condensed water generated by the secondary steam during condensation heat exchange contains a large amount of organic pollutants, and discharged condensed water cannot meet the corresponding environmental protection standard of the discharged sewage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high concentration organic sewage vaporization, catalysis incineration equipment to the a great deal of problem that current organic sewage treatment exists, this process flow is simple, reasonable, compact, high-efficient, can be arranged in high concentration organic sewage vaporization, the catalysis to burn pollutant decomposition oxidation in the technology of handling secondary steam.
In order to achieve the above object, the utility model adopts the following technical scheme: a high-concentration organic sewage vaporization and catalytic incineration device comprises an evaporation heater, a gas-liquid separator, a heat storage incinerator, a vapor compressor (MVR), a circulating water pump and a heat exchanger, wherein a high-concentration organic sewage pipeline is communicated with a refrigerant inlet of the heat exchanger, and a refrigerant outlet of the heat exchanger is communicated with the gas-liquid separator; an outlet at the bottom of the gas-liquid separator is communicated with an evaporation heater tube pass inlet through a circulating water pump, and an evaporation heater tube pass outlet is communicated with the gas-liquid separator; the secondary steam outlet of the gas-liquid separator is communicated with the inlet of a steam compressor, the outlet of the steam compressor is communicated with a heat storage incinerator, and the steam outlet of the heat storage incinerator is communicated with the shell pass inlet of the evaporation heater; the shell pass condensed water outlet of the evaporation heater is communicated with a heat medium inlet of the heat exchanger, and the shell pass non-condensable gas outlet of the evaporation heater is communicated with a subsequent working section;
the combustion chamber of the regenerative incinerator comprises a plurality of parallel regenerative chambers and a combustion chamber, and the combustion chamber is communicated with the plurality of regenerative chambers; the gas pipeline and the oxygen-containing gas pipeline are communicated with the combustion chamber (or the combustion chamber heat radiation pipe); the outlet of the steam compressor is communicated with the heat storage chambers, and each heat storage chamber of the heat storage incinerator is provided with a secondary steam reversing valve.
Furthermore, a heat accumulator and a catalyst bed layer are arranged in the heat accumulator, the catalyst bed layer is positioned above the heat accumulator, and the catalyst bed layer is arranged in the heat accumulator and can improve the pyrolysis efficiency of VOC and water vapor in secondary steam and the conversion efficiency of gasification reaction.
Furthermore, the heat accumulator in the heat accumulation chamber is made of honeycomb ceramics, ceramic balls, quartz glass balls, alumina balls or silica balls with good heat exchange performance.
Furthermore, a secondary steam reversing valve is arranged at the bottom of the heat storage chamber and is respectively connected with an outlet of the steam compressor, the heat storage chamber and the evaporation heater.
Furthermore, the heat accumulation incinerator is provided with three heat accumulation chambers, a combustion chamber and a matched gas burner (or a heat radiation pipe), the three heat accumulation chambers are respectively communicated with the combustion chamber, a reversing valve periodically switches the entering or the discharging of secondary steam, and the switching mode of the heat accumulation-heat exchange process is as follows:
1) the secondary steam valve (connected with the compressor and the steam) of the third heat storage chamber is opened, the high-temperature secondary steam valve (connected with the evaporation heater) is closed, and the secondary steam enters the third heat storage chamber; the high-temperature secondary steam valves of the first regenerator and the second regenerator are opened, the secondary steam valves are closed, and high-temperature secondary steam is discharged from the first regenerator and the second regenerator;
2) the secondary steam valve of the first heat storage chamber is opened, the high-temperature secondary steam valve is closed, the secondary steam valve of the second heat storage chamber is closed, and the high-temperature secondary steam valve is opened; the secondary steam valve of the third regenerator is opened, and the high-temperature steam valve is closed; the secondary steam enters the first heat storage chamber and the third heat storage chamber, and the high-temperature secondary steam is discharged from the second heat storage chamber;
3) the secondary steam valve of the first heat storage chamber is opened, the high-temperature secondary steam valve is closed, the secondary steam valve of the second heat storage chamber is closed, the high-temperature secondary steam valve is opened, the secondary steam valve of the third heat storage chamber is closed, and the high-temperature secondary steam valve is opened; the secondary steam enters the first heat storage chamber, and the high-temperature secondary steam is discharged from the second heat storage chamber and the third heat storage chamber.
The utility model discloses another purpose still discloses a high concentration organic sewage vaporization, catalytic incineration technology, including following step:
step 1, exchanging heat between the high-concentration organic sewage and condensed water discharged by an evaporation heater 1 in a heat exchanger 6, and conveying the heated organic sewage to a gas-liquid separator 2;
step 3, pressurizing and conveying secondary steam discharged from the top of the gas-liquid separator 2 to the heat storage incinerator 3 through a steam compressor 4;
step 5, spraying the coal gas and the oxygen-containing gas into a combustion chamber through a mixed burner for combustion, keeping the temperature of the combustion chamber at 800-1050 ℃, enabling ammonia, hydrogen sulfide, VOC and oxygen in secondary steam entering the combustion chamber to generate an oxidation combustion reaction, and enabling high-temperature secondary steam discharged from the combustion chamber to enter a second heat storage chamber and a third heat storage chamber;
step 6, allowing the high-temperature secondary steam entering the second regenerator and the third regenerator to pass through a catalyst bed layer, and further decomposing and burning residual pollutants in the high-temperature secondary steam; high-temperature secondary steam after decomposition and combustion exchanges heat with the low-temperature heat accumulator, the high-temperature secondary steam is discharged from a heat accumulation chamber of the incinerator after heat exchange and cooling, and the discharged secondary steam enters a shell pass of the evaporation heater 1;
and 7, exchanging heat between secondary steam in the shell pass of the evaporation heater 1 and organic sewage circulating water in the tube pass, transferring steam condensate water discharged by the evaporation heater 1 to the heat exchanger 6 to exchange heat with the organic sewage, and discharging part of non-condensable gas accumulated in the evaporation heater 1 through a non-condensable gas discharge outlet.
The following chemical reactions take place in the regenerative incinerator:
CmHn+H2O_→CO2+H2
CmHn+O2→CO2+H2O
H2+O2→H2O
NH3+O2→H2O+N2
H2S+O2→S02+H2O
further, the temperature of the hot organic sewage discharged by the evaporation heater 1 in the step 2 is 3-6 ℃ higher than the operation temperature of the gas-liquid separator 2.
Further, the secondary steam in the step 4 is pressurized by the steam compressor 4, and the secondary steam pressure at the outlet of the steam compressor 4 needs to be higher than the operating pressure of the gas-liquid separator 2 by more than 30-80 kPa.
Further, the oxygen-containing gas in the step 5 is air or oxygen-enriched gas; in order to reduce the waste gas amount generated by gas combustion in the combustion chamber and reduce the concentration of non-condensable gas in high-temperature secondary steam, oxygen-enriched gas can be used for replacing air in the gas combustion; or a heat radiation pipe is adopted for indirect heating, and the heat radiation pipe is used as a heat supply source for the combustion gas. The oxygen supplemented in the combustion chamber and the combustible pollutants in the secondary steam are subjected to oxidation combustion reaction.
And further, in the step 6, the high-temperature secondary steam is cooled to 200-250 ℃ through heat exchange and is discharged to the evaporation heater from a heat storage chamber of the incinerator.
The utility model discloses high concentration organic sewage vaporization, catalytic incineration equipment compares with prior art and has following advantage:
1) the utility model adopts the catalytic incineration mode of secondary steam heat storage-heat exchange, under the condition of using a small amount of gas fuel, pollutants such as volatile organic compounds in the secondary steam can be catalytically decomposed and oxidized under the high temperature condition.
2) The utility model discloses the temperature field is even in the combustion chamber, and the regenerator is equipped with the catalyst bed and makes pollutant can decompose the oxidation completely in the secondary steam. The secondary steam condensate water after catalytic oxidation treatment reaches the environmental protection emission standard. The pollutant decomposition and oxidation process is an exothermic reaction, and the reaction heat is recycled.
Drawings
FIG. 1 is a schematic structural view of the high concentration organic sewage vaporizing and catalytic incineration apparatus of the present invention.
Detailed Description
The invention is further illustrated below with reference to the following examples:
example 1
The embodiment discloses high-concentration organic sewage vaporization and catalysis incineration equipment, which is structurally shown in figure 1 and comprises an evaporation heater 1, a gas-liquid separator 2, a heat storage incinerator 3, a vapor compressor 4(MVR), a circulating water pump 5 and a heat exchanger 6, wherein a high-concentration organic sewage pipeline is communicated with a refrigerant inlet of the heat exchanger 6, and a refrigerant outlet of the heat exchanger 6 is communicated with the gas-liquid separator 2; an outlet at the bottom of the gas-liquid separator 2 is communicated with a tube pass inlet of the evaporation heater 1 through a circulating water pump 5, and a tube pass outlet of the evaporation heater 1 is communicated with the gas-liquid separator 2; a secondary steam outlet of the gas-liquid separator 2 is communicated with an inlet of a steam compressor 4, a steam pipe at an outlet of the steam compressor 4 is connected with a heat accumulation incinerator 3, and a steam outlet pipe of the heat accumulation incinerator 3 is communicated with a shell pass inlet of the evaporation heater 1; a shell pass condensed water outlet of the evaporation heater 1 is communicated with a heat medium inlet of the heat exchanger 6, and a shell pass non-condensable gas outlet of the evaporation heater 1 is communicated with a subsequent working section;
the combustion chamber of the heat accumulation incinerator comprises three parallel heat accumulation chambers, a combustion chamber and a matched gas burner (or a heat radiation pipe), and the combustion chamber is communicated with the three heat accumulation chambers; the heat storage chamber is internally provided with a heat storage body and a catalyst bed layer, the catalyst bed layer is positioned above the heat storage body, and the catalyst bed layer is arranged in the heat storage chamber and can improve the pyrolysis efficiency and the gasification reaction conversion efficiency of VOC and water vapor in secondary steam. The heat accumulator in the heat accumulation chamber is made of honeycomb ceramics, ceramic balls, quartz glass balls, alumina balls or silica balls with good heat exchange performance. The gas pipeline and the oxygen-containing gas pipeline are communicated with the combustion chamber (or the combustion chamber heat radiation pipe); and each heat storage chamber of the heat storage incinerator 3 is respectively provided with a secondary steam reversing valve. The secondary steam reversing valve is respectively connected with the outlet of the steam compressor, the regenerator and the evaporation heater. The reversing valve periodically switches the inlet or the outlet of secondary steam, and the switching mode of the heat storage-heat exchange process is as follows:
1) the secondary steam valve (connected with a steam compressor) of the third heat storage chamber is opened, the high-temperature secondary steam valve (connected with an evaporation heater) is closed, and secondary steam enters the third heat storage chamber; the high-temperature secondary steam valves of the first regenerator and the second regenerator are opened, the secondary steam valves are closed, and high-temperature secondary steam is discharged from the first regenerator and the second regenerator;
2) the secondary steam valve of the first heat storage chamber is opened, the high-temperature secondary steam valve is closed, the secondary steam valve of the second heat storage chamber is closed, and the high-temperature secondary steam valve is opened; the secondary steam valve of the third regenerator is opened, and the high-temperature steam valve is closed; the secondary steam enters the first heat storage chamber and the third heat storage chamber, and the high-temperature secondary steam is discharged from the second heat storage chamber;
3) the secondary steam valve of the first heat storage chamber is opened, the high-temperature secondary steam valve is closed, the secondary steam valve of the second heat storage chamber is closed, the high-temperature secondary steam valve is opened, the secondary steam valve of the third heat storage chamber is closed, and the high-temperature secondary steam valve is opened; the secondary steam enters the first heat storage chamber, and the high-temperature secondary steam is discharged from the second heat storage chamber and the third heat storage chamber.
The process for vaporizing and catalytically incinerating the high-concentration organic sewage by adopting the equipment comprises the following steps of:
step 1, exchanging heat between the high-concentration organic sewage and condensed water discharged by an evaporation heater 1 in a heat exchanger 6, and conveying the heated organic sewage to a gas-liquid separator 2;
step 3, pressurizing and conveying secondary steam discharged from the top of the gas-liquid separator 2 to the heat storage incinerator 3 through a steam compressor 4;
step 5, spraying the coal gas and the oxygen-containing gas into a combustion chamber through a mixed burner for combustion, and keeping the temperature of the combustion chamber at 800-1050 ℃, wherein the oxygen-containing gas is air or oxygen-enriched gas; ammonia, hydrogen sulfide, VOC and oxygen in the secondary steam entering the combustion chamber are subjected to oxidation combustion reaction, and high-temperature secondary steam discharged from the combustion chamber enters the second regenerator and the third regenerator;
step 6, allowing the high-temperature secondary steam entering the second regenerator and the third regenerator to pass through a catalyst bed layer, and further decomposing and burning residual pollutants in the high-temperature secondary steam; high-temperature secondary steam after decomposition and combustion exchanges heat with the low-temperature heat accumulator, and the secondary steam and the high-temperature secondary steam periodically and alternately pass through the heat accumulator to realize heat accumulation type heat exchange. The high-temperature secondary steam is cooled to 200-250 ℃ through heat exchange and is discharged from a regenerator of the incinerator, and the discharged secondary steam enters a shell pass of an evaporation heater 1;
and 7, exchanging heat between secondary steam in the shell pass of the evaporation heater 1 and organic sewage circulating water in the tube pass, transferring steam condensate water discharged by the evaporation heater 1 to the heat exchanger 6 to exchange heat with the organic sewage, and discharging part of non-condensable gas accumulated in the evaporation heater 1 through a non-condensable gas discharge outlet.
The following chemical reactions take place in the regenerative incinerator:
CmHn+H2O_→CO2+H2
CmHn+O2→CO2+H2O
H2+O2→H2O
NH3+O2→H2O+N2
H2S+O2→S02+H2O
and 4, pressurizing the secondary steam by using a steam compressor 4, wherein the secondary steam pressure at the outlet of the steam compressor 4 is required to be higher than the operating pressure of the gas-liquid separator 2 by more than 30-80 kPa.
Example 2:
the embodiment discloses a process for vaporizing and catalytically incinerating high-concentration organic sewage, and the adopted equipment is the same as that in embodiment 1.
100 ten thousand tons of coke are produced annually in a coking plant, and the residual ammonia water produced in the coking production is 25 t/h. The residual ammonia water is pretreated by deslagging, deoiling and degassing. The residual ammonia water after the pretreatment is treated by the high-concentration organic sewage vaporizing and catalytic incineration process.
And (3) exchanging heat between the residual ammonia water and the steam condensate water, heating the residual ammonia water, conveying the heated residual ammonia water to an evaporator, conveying the ammonia water in the evaporator to an evaporation heater through a circulating liquid pump to exchange heat with secondary steam, heating the circulating ammonia water to 105 ℃, conveying the heated circulating ammonia water to a gas-liquid separator, operating the gas-liquid separator at 100 ℃, and carrying out flash evaporation gasification on the circulating ammonia water to generate the secondary steam containing pollutants such as ammonia, hydrogen sulfide, hydrogen cyanide, benzene, phenol and the like. And pressurizing secondary steam discharged from the top of the gas-liquid separator by a steam compressor, pressurizing the secondary steam to 0.16MPa, and sending the pressurized secondary steam to the heat accumulation incinerator. The secondary steam is heated to 750 ℃ in the heat storage incinerator through heat exchange of the heat storage body, enters the combustion chamber through the catalyst bed layer, and the VOC gas such as benzene, phenol and the like in the secondary steam at 750 ℃ and steam are subjected to pyrolysis and gasification reaction. Under the condition of gas combustion supporting, the temperature of a combustion chamber reaches 950 ℃, oxygen required by decomposition and oxidation of impurities such as pollutants is supplemented, ammonia, hydrogen sulfide, hydrogen cyanide and residual VOC gas in secondary steam are subjected to oxidation combustion reaction in the combustion chamber, high-temperature secondary steam enters a catalyst bed layer of a regenerator from the combustion chamber, impurities such as residual combustible pollutants in the secondary steam are subjected to decomposition combustion, the secondary steam after decomposition combustion is cooled to 250 ℃ through the regenerator, the cooled secondary steam is discharged to an evaporation heater shell pass to exchange heat with circulating ammonia water and be cooled to 106 ℃, part of non-condensed steam and water vapor are discharged to other heat exchange equipment to be cooled, and condensed water of the secondary steam is discharged after heat exchange with the residual ammonia water. The evaporation heater discharges a small amount of concentrated sewage to a subsequent treatment device.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (4)
1. A high-concentration organic sewage vaporization and catalytic incineration device is characterized by comprising an evaporation heater (1), a gas-liquid separator (2), a heat storage incinerator (3), a steam compressor (4), a circulating water pump (5) and a heat exchanger (6), wherein a high-concentration organic sewage pipeline is communicated with a refrigerant inlet of the heat exchanger (6), and a refrigerant outlet of the heat exchanger (6) is communicated with the gas-liquid separator (2); an outlet at the bottom of the gas-liquid separator (2) is communicated with a tube pass inlet of the evaporation heater (1) through a circulating water pump (5), and a tube pass outlet of the evaporation heater (1) is communicated with the gas-liquid separator (2); the secondary steam outlet of the gas-liquid separator (2) is communicated with the inlet of a steam compressor (4), the outlet of the steam compressor (4) is communicated with a regenerative incinerator (3), and the steam outlet of the regenerative incinerator (3) is communicated with the shell side inlet of the evaporation heater (1); a shell pass condensed water outlet of the evaporation heater (1) is communicated with a heat medium inlet of the heat exchanger (6), and a shell pass non-condensable gas outlet of the evaporation heater (1) is communicated with a subsequent working section;
the combustion chamber of the regenerative incinerator comprises a plurality of parallel regenerative chambers and a combustion chamber, and the combustion chamber is communicated with the plurality of regenerative chambers; the gas pipeline and the oxygen-containing gas pipeline are communicated with the combustion chamber; the outlet of the steam compressor (4) is communicated with the heat storage chambers, and each heat storage chamber of the heat storage incinerator (3) is provided with a secondary steam reversing valve.
2. The apparatus for vaporizing and catalytic incineration of high concentration organic sewage according to claim 1, wherein a heat storage body and a catalyst bed layer are provided in the heat storage chamber, and the catalyst bed layer is located above the heat storage body.
3. The apparatus for vaporizing and catalytic incineration of high concentration organic sewage according to claim 1, wherein the heat accumulator in the heat storage chamber is selected from honeycomb ceramics, ceramic balls, quartz glass balls, alumina balls or silica balls having good heat exchange performance.
4. The high concentration organic sewage vaporizing and catalytic incineration apparatus of claim 1, wherein a secondary steam change valve is provided at the bottom of the regenerator; the secondary steam reversing valve is respectively connected with the outlet of the steam compressor, the regenerator and the evaporation heater.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112777666A (en) * | 2021-01-14 | 2021-05-11 | 大连市昊通环保工程技术有限公司 | Process and equipment for vaporizing and catalytically incinerating high-concentration organic sewage |
| CN115072923A (en) * | 2022-06-27 | 2022-09-20 | 江苏中宏环保科技有限公司 | Waste water incineration treatment system |
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2021
- 2021-01-14 CN CN202120090638.4U patent/CN214456966U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112777666A (en) * | 2021-01-14 | 2021-05-11 | 大连市昊通环保工程技术有限公司 | Process and equipment for vaporizing and catalytically incinerating high-concentration organic sewage |
| CN112777666B (en) * | 2021-01-14 | 2024-10-01 | 大连昊通节能环保工程技术有限公司 | High-concentration organic sewage vaporization and catalytic incineration process and equipment |
| CN115072923A (en) * | 2022-06-27 | 2022-09-20 | 江苏中宏环保科技有限公司 | Waste water incineration treatment system |
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Address after: Room 101-b1, 1st floor, front building, No. 909c, Huangpu Road, high tech Industrial Park, Dalian, Liaoning Province, 116000 Patentee after: Dalian Haotong energy conservation and Environmental Protection Engineering Technology Co.,Ltd. Address before: 116000 101-b1, 1f, front building, No. 909c, Huangpu Road, high tech Industrial Park, Dalian, Liaoning Patentee before: DALIAN HAOTONG ENVIRONMENTAL PROTECTION ENGINEERING TECHNOLOGY Co.,Ltd. |
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