CN108954347B - Waste liquid combustion treatment system - Google Patents
Waste liquid combustion treatment system Download PDFInfo
- Publication number
- CN108954347B CN108954347B CN201811111884.2A CN201811111884A CN108954347B CN 108954347 B CN108954347 B CN 108954347B CN 201811111884 A CN201811111884 A CN 201811111884A CN 108954347 B CN108954347 B CN 108954347B
- Authority
- CN
- China
- Prior art keywords
- waste liquid
- pipe
- heat exchange
- water
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a waste liquid combustion treatment system, which comprises a waste liquid combustion device, a heat recovery heat exchanger and a tail gas treatment device; the waste liquid combustion device comprises a collecting tank and a high-pressure air source, and the collecting tank is connected with a waste liquid combustion furnace through a waste liquid pipe; the waste liquid combustion furnace comprises a furnace body, and a refractory clay layer is arranged on the inner wall of the furnace body; the lower end of the furnace body is closed, and the upper end of the furnace body is provided with an opening; the high-pressure gas source is communicated with the waste liquid pipe through a high-pressure gas pipe, and an igniter is arranged at the opening of one end of the waste liquid pipe extending into the furnace body; the heat recovery heat exchanger comprises a heat exchange barrel body which is vertically arranged, the tail gas treatment device comprises a tower body, a water tank is arranged at the bottom of the tower body, a tail gas inlet is formed in the side wall of the tower body above the water tank, two layers of porous plates are arranged at intervals in the tower body above the tail gas inlet, a filler is arranged on each porous plate, and the top end of the tower body is connected with a condenser through a tail gas outlet pipe. The invention is convenient for fully burning waste liquid of liquid fuel generated in a laboratory, can recycle heat generated by burning, and fully absorbs harmful components in tail gas.
Description
Technical Field
The invention relates to the technical field of waste liquid treatment, in particular to a technology for burning, heat recovery and tail gas purification of laboratory liquid fuel.
Background
Laboratory often uses flammable and explosive liquid fuels, common to laboratory flammable and explosive liquid fuels are: benzene, toluene, methanol, ethanol, petroleum ether, acetone, and the like. The waste liquid fuel after the experiment can pollute the environment and bring fire hazard if being directly discharged. The waste fuel is put in the combustion furnace to burn, and then a large amount of heat is generated in a short time, and if the heat is directly released into the air, energy waste is formed, the temperature in a laboratory is rapidly increased, the indoor temperature condition is deteriorated, and an air conditioner in the laboratory needs to be further started to cool, so that the two energy wastes are caused.
Currently, there is a lack of a combustion treatment system available on the market that is suitable for treating waste liquid fuel.
Disclosure of Invention
The invention aims to provide a waste liquid combustion treatment system which is convenient for fully combusting waste liquid of liquid fuel generated in a laboratory, can recycle heat generated by combustion and fully absorb harmful components in tail gas.
In order to achieve the above object, the waste liquid combustion treatment system of the present invention comprises a waste liquid combustion device, a heat recovery heat exchanger and a tail gas treatment device;
the waste liquid combustion device comprises a collecting tank for containing waste liquid fuel and a high-pressure air source for providing compressed air, and the collecting tank is connected with a waste liquid combustion furnace through a waste liquid pipe; taking the flow direction of the waste liquid as the downstream direction;
the waste liquid combustion furnace comprises a steel furnace body, the horizontal section of the furnace body is circular, and a refractory clay layer is arranged on the inner wall of the furnace body; the lower end of the furnace body is closed, and the upper end of the furnace body is provided with an opening;
the waste liquid pipe is connected to the lower part of the furnace body; the high-pressure air source is communicated with the waste liquid pipe through a high-pressure air pipe, the high-pressure air pipe is inclined towards the downstream direction of the waste liquid pipe, and the joint of the high-pressure air pipe and the waste liquid pipe is positioned at the downstream end part of the waste liquid pipe;
the upstream end of the waste liquid pipe is provided with a first valve, and the high-pressure air pipe is provided with a second valve; an igniter is arranged at the opening of one end of the waste liquid pipe extending into the furnace body; an annular heat exchanger connecting flange is arranged at the top of the furnace body, and threaded holes for connection are uniformly formed in the heat exchanger connecting flange;
the heat recovery heat exchanger comprises a heat exchange cylinder body which is vertically arranged, a combustion furnace connecting flange is arranged at the bottom end of the heat exchange cylinder body, and the combustion furnace connecting flange is used for connecting a gas outlet of a combustion furnace;
the upper end and the lower end of the heat exchange cylinder body are both open, the bottom end of the inner wall of the heat exchange cylinder body is upwards connected with a conical heat exchange cover, and the heat exchange cover is arranged in a narrow and wide way at the upper part and is made of metal materials; the bottom end of the heat exchange cover is connected with the inner wall of the heat exchange cylinder in a sealing way along the circumferential direction, and the heat exchange cover and the heat exchange cylinder are coaxially arranged;
the top of the heat exchange cover is communicated with a tail gas inlet pipe with a circular section; the outer wall of the heat exchange cover and the outer wall of the tail gas inlet pipe form a water cavity inner wall, a heat exchange water cavity is enclosed between the water cavity inner wall and the heat exchange cylinder inner wall, one side of the heat exchange water cavity is communicated with a water inlet pipe, and the other side of the heat exchange water cavity is communicated with a water outlet pipe;
the combustion furnace connecting flange is connected with the heat exchanger connecting flange through bolts;
the tail gas treatment device comprises a vertically arranged tower body, a water tank is arranged at the bottom of the tower body, and water is contained in the water tank; a tail gas inlet is formed in the side wall of the tower body above the water tank and is connected with the tail gas inlet pipe, and two layers of porous plates are arranged at intervals in the tower body above the tail gas inlet, namely an upper layer of porous plate and a lower layer of porous plate; the upper porous plate is provided with an upper filler which is an acidic or alkaline filler, the lower porous plate is provided with a lower filler which is an alkaline or acidic filler; the top end of the tower body is connected with a condenser through a tail gas outlet pipe, and the condenser is positioned above the tower body; the top of the condenser is provided with a tail gas discharge port;
a coiled pipe is arranged in the condenser, two ends of the coiled pipe extend out of the condenser respectively, one end of the coiled pipe is connected with a tap water inlet pipeline, and the other end of the coiled pipe is connected with a tap water outlet pipeline;
a guide plate is arranged in the condenser below the coiled pipe, the guide plate is arranged at the left side, the right side and the left side wall of the condenser in a low mode, a gap is arranged between the left side of the guide plate and the left side wall of the condenser, a gap is arranged between the right side of the guide plate and the right side wall of the condenser, the front end of the guide plate is connected with the front side wall of the condenser, and the rear end of the guide plate is connected with the rear side wall of the condenser; the condenser diapire on the right side of guide plate is linked together with the tower body through the back flow, and the back flow is located the right side of tail gas exit tube.
A vertically arranged supporting rod is arranged at the center of the furnace body, a spiral blade is fixedly connected to the supporting rod, the outer edge of the spiral blade is in sliding fit with the inner wall of the furnace body, the spiral blade and the inner wall of the furnace body enclose a spiral high-temperature gas flow passage, and the upper end of the high-temperature gas flow passage is connected with an opening of the furnace body; the downstream end of the waste liquid pipe extends into the bottom of the high-temperature gas flow channel.
An extension line of an axis of a downstream end portion of the waste liquid pipe is offset from a center of the furnace body.
An atomization device is arranged in the downstream end part of the waste liquid pipe, the atomization device comprises an annular shell, and the outer surface of the annular shell is connected with the inner surface of the waste liquid pipe; the annular shell and the waste liquid pipe are coaxially arranged, an annular gas distribution pipe is arranged in the annular shell, and the center of the annular gas distribution pipe is positioned on the axis of the waste liquid pipe; a plurality of air nozzles are uniformly arranged on the surface of one side of the annular air distribution pipe facing the downstream direction; the high-pressure air pipe extends into the waste liquid pipe and the annular shell in a sealing way and is communicated with the annular air distribution pipe.
The outer wall of the heat exchange cylinder body is provided with a heat insulation layer; the water inlet pipe is communicated with the top of the heat exchange water cavity, and the water outlet pipe is communicated with the bottom of the heat exchange water cavity.
The top of the heat exchange cover is downwards connected with a hanging plate, the bottom end of the hanging plate is connected with a blocking plate, the blocking plate is horizontally arranged and positioned at the middle lower part of the heat exchange cover, and a gap is arranged between the circumferential edge of the blocking plate and the inner wall of the heat exchange cover.
The top of the heat exchange cylinder body is provided with two hanging rings, and a connecting line between the two hanging rings passes through the vertical axis of the heat exchange cylinder body; and the water outlet pipe is connected with a heat unit.
A self-sucking pump is arranged on one side of the tower body, a water inlet pipe of the self-sucking pump is communicated with the water tank, a water spraying pipe is horizontally arranged in the tower body above the upper layer of filler, the water spraying pipe is provided with a plurality of water spraying holes, and each water spraying hole is downwards arranged; the water outlet pipe of the self-priming pump is communicated with the water spraying pipe.
The side wall of the water tank is provided with a water level display tube, the water level display tube is a transparent tube, the lower end of the water level display tube is communicated with the bottom of the water tank, and the upper end of the water level display tube is higher than the top of the water tank.
The invention has the following advantages:
the invention has simple structure and lower overall cost, can complete the functions of combustion, heat recovery and tail gas purification, has higher combustion efficiency and heat recovery efficiency, can absorb most of harmful components in the tail gas, and discharges cleaner gas to the outside.
The waste liquid combustion device is mainly used for combusting waste liquid fuel generated after laboratory experiments, and heat energy is generated by utilizing the waste liquid fuel, so that the cost is saved. The inner wall of the furnace body is provided with a fire clay layer, thereby avoiding the direct heating of the furnace body by flame at high temperature and avoiding the overhigh temperature of the furnace body.
The high-pressure air pipe is inclined towards the downstream direction of the waste liquid pipe, and the joint of the high-pressure air pipe and the waste liquid pipe is positioned at the downstream end part of the waste liquid pipe. In this way, the high-pressure gas ejected from the high-pressure gas pipe can gasify the waste liquid and smoothly flow into the waste liquid combustion furnace in the downstream direction.
The spiral blades and the inner wall of the furnace body enclose a spiral high-temperature gas flow passage, so that high-temperature gas cannot flow upwards in the furnace directly, an airflow passage is prolonged, and waste liquid burning area is more sufficient.
The extension line of the axis of the downstream end part of the waste liquid pipe deviates from the center of the furnace body (namely, the center of the section of the furnace body), so that an atomized mixture formed by waste liquid and high-pressure gas can not be directly sprayed onto the supporting rod, thereby preventing the phenomenon of flow confusion and ensuring that the atomized mixture is sprayed into the high-temperature gas flow channel so as to spirally flow upwards in combustion along the high-temperature gas flow channel.
The setting of atomizing device for high-pressure gas sprays to the low reaches direction together from a plurality of evenly arranged air jet, has strengthened the atomization effect greatly, makes the waste liquid obtain fully burning more fast in the waste liquid burning furnace, prevents to burn incomplete gas and flow out from the opening of furnace body upper end.
The outer wall of the furnace body is provided with a heat insulation cotton layer. Thereby reducing the heat dissipated by the waste liquid combustion furnace, and improving the heat recovery utilization rate. The waste liquid combustion device has a simple structure, is convenient to manufacture and use, can fully burn liquid fuel waste liquid generated in a laboratory, and can manufacture heat energy while eliminating potential safety hazards.
The heat recovery heat exchanger has the advantages of compact structure, smaller volume, higher heat exchange efficiency, capability of recovering more heat and convenience in installation and use.
The high-temperature exhaust gas of the combustion furnace is introduced into the heat exchange cover from bottom to bottom and blocked by the blocking plate, the airflow direction becomes horizontal, and then the high-temperature exhaust gas continuously flows upwards along the gap between the circumferential edge of the blocking plate and the inner wall of the heat exchange cover under the action of the hot gas rising principle, so that the flow speed of the high-temperature exhaust gas is greatly slowed down, and the high-temperature exhaust gas can more fully exchange heat with water in the heat exchange water cavity through the wall of the heat exchange cover when slowly passing through the heat exchange cover.
The low-temperature water just entering is firstly contacted with the top of the inner wall of the water cavity, and the top of the inner wall of the water cavity is contacted with high-temperature exhaust gas after the temperature is reduced due to heat exchange. The water which is to flow out of the heat exchange water cavity and is heated contacts the bottom of the inner wall of the water cavity, the bottom of the inner wall of the water cavity contacts the high-temperature exhaust gas which just begins to exchange heat and has no temperature drop, and the arrangement ensures that the change of the temperature difference between the water and the high-temperature exhaust gas is smoothed to the greatest extent, and the uniformity of the temperature difference is the highest, thereby bringing the advantage of highest heat exchange efficiency.
The tail gas treatment device can absorb most harmful components in the tail gas, and discharge cleaner gas to the outside. The invention has simple structure, lower cost and better absorption effect of harmful components.
The two layers of fillers are respectively acid fillers and alkaline fillers, and alkaline components contained in tail gas are absorbed when the tail gas passes through the acid fillers; the tail gas is absorbed by the acidic components contained in the tail gas when the tail gas passes through the alkaline filling material. Therefore, after the tail gas is absorbed by the two layers of fillers, the harmful gas in the tail gas is effectively absorbed by the fillers.
The water spraying pipe sprays water downwards on the upper filler, and the water also necessarily passes through the lower filler in the process of downwards flowing. The filler containing water absorbs heat in the exhaust gas on the one hand and increases the adsorption effect of the filler on harmful substances in the exhaust gas on the other hand.
Drawings
FIG. 1 is a schematic diagram of a waste liquid combustion device;
FIG. 2 is a schematic view of the structure of the furnace body;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a schematic cross-sectional C-C view of FIG. 2;
FIG. 5 is a schematic view of the configuration of the atomizing device in cooperation with the high pressure gas tube;
FIG. 6 is a side view schematic of FIG. 5;
FIG. 7 is a schematic view of a heat recovery heat exchanger;
FIG. 8 is a B-B view of FIG. 7;
FIG. 9 is a D-D view of FIG. 7;
fig. 10 is an enlarged view at B in fig. 7;
fig. 11 is a schematic structural view of the exhaust gas treatment device.
Detailed Description
As shown in fig. 1 to 11, the waste liquid combustion treatment system of the present invention includes a waste liquid combustion device, a heat recovery heat exchanger, and a tail gas treatment device.
As shown in fig. 1 to 6, the waste liquid combustion apparatus includes a collection tank 1 for containing waste liquid fuel and a high pressure air source 2 for supplying compressed air, the collection tank 1 being connected to a waste liquid combustion furnace through a waste liquid pipe 3; taking the flow direction of the waste liquid as the downstream direction;
the waste liquid combustion furnace comprises a steel furnace body 4, the horizontal section of the furnace body 4 is circular, and a refractory clay layer 5 is arranged on the inner wall of the furnace body 4, so that the furnace body 4 is prevented from being directly heated by flame at high temperature, and the furnace body 4 is prevented from being excessively high in temperature; the lower end of the furnace body 4 is closed, and the upper end is provided with an opening 17;
the waste liquid pipe 3 is connected to the lower part of the furnace body 4; the high-pressure air source 2 is communicated with the waste liquid pipe 3 through a high-pressure air pipe 18, the high-pressure air pipe 18 is inclined towards the downstream direction of the waste liquid pipe 3, and the joint of the high-pressure air pipe 18 and the waste liquid pipe 3 is positioned at the downstream end part of the waste liquid pipe 3; in this way, the high-pressure gas ejected from the high-pressure gas pipe 18 can gasify the waste liquid and smoothly flow into the waste liquid combustion furnace in the downstream direction, which is advantageous for the waste liquid to be fully combusted in the furnace body 4.
The upstream end of the waste liquid pipe 3 is provided with a first valve 6, and the high-pressure air pipe 18 is provided with a second valve 7; an igniter is arranged at the opening of one end of the waste liquid pipe 3 extending into the furnace body 4. The igniter is a conventional device, not shown.
A vertically arranged supporting rod 8 is arranged at the center of the furnace body 4, a spiral blade 9 is fixedly connected to the supporting rod 8, the outer edge of the spiral blade 9 is in sliding fit with the inner wall of the furnace body 4, the spiral blade 9 and the inner wall of the furnace body 4 enclose a spiral high-temperature gas flow channel 10, and the upper end of the high-temperature gas flow channel 10 is connected with an opening of the furnace body 4; the downstream end of the waste liquid pipe 3 extends into the bottom of the high-temperature gas flow passage 10.
An extension line 11 of the axis of the downstream end portion of the waste liquid pipe 3 is offset from the center of the furnace body 4 (i.e., at the center of the cross section of the furnace body 4). Thus, the atomized mixture formed by the waste liquid and the high-pressure gas can not be directly sprayed onto the support rod 8, thereby preventing the occurrence of flow disorder, and ensuring that the atomized mixture is sprayed into the high-temperature gas flow channel 10 to spirally flow upwards in the combustion along the high-temperature gas flow channel 10.
The top of the furnace body 4 is provided with an annular heat exchanger connecting flange 12, and threaded holes for connection are uniformly formed in the heat exchanger connecting flange 12.
An atomization device is arranged in the downstream end part of the waste liquid pipe 3, the atomization device comprises an annular shell 13, and the outer surface of the annular shell 13 is connected with the inner surface of the waste liquid pipe 3; the annular shell 13 and the waste liquid pipe 3 are coaxially arranged, an annular air distribution pipe 14 is connected in the annular shell 13 through a connecting rib 19, and the center of the annular air distribution pipe 14 is positioned on the axis of the waste liquid pipe 3; a plurality of air nozzles 15 are uniformly arranged on the surface of one side of the annular air distribution pipe 14 facing the downstream direction; the high-pressure air pipe 18 extends into the waste liquid pipe 3 and the annular shell 13 in a sealing way and is communicated with the annular air distribution pipe 14.
In this way, the high-pressure gas is sprayed from the plurality of evenly arranged air nozzles 15 in the downstream direction, so that the atomization effect is greatly enhanced, the waste liquid can be fully combusted in the waste liquid combustion furnace more quickly, and incomplete combustion gas is prevented from flowing out from the opening at the upper end of the furnace body 4.
The outer wall of the furnace body 4 is provided with a heat insulation cotton layer 16. Thereby reducing the heat dissipated by the waste liquid combustion furnace, and improving the heat recovery utilization rate.
The high-pressure air source 2 is a high-pressure air tank or an air compressor.
As shown in fig. 7 to 10, the heat recovery heat exchanger of the present invention includes a heat exchange cylinder 61 vertically disposed, a burner connection flange 62 is provided at the bottom end of the heat exchange cylinder 61, and the burner connection flange 62 is connected to the heat exchanger connection flange 12 by bolts, thereby allowing gas in the burner to enter the heat exchange cylinder 61.
The upper end and the lower end of the heat exchange cylinder 61 are both open, the bottom end of the inner wall of the heat exchange cylinder 61 is upwards connected with a conical heat exchange cover 63, and the heat exchange cover 63 is arranged in a narrow and wide way at the upper part and is made of metal materials; the bottom end of the heat exchange cover 63 is connected with the inner wall of the heat exchange cylinder 61 in a sealing way along the circumferential direction, and the heat exchange cover 63 and the heat exchange cylinder 61 are coaxially arranged;
the top of the heat exchange cover 63 is communicated with a tail gas inlet pipe 64 with a circular section; the outer wall of the heat exchange cover 63 and the outer wall of the tail gas inlet pipe 64 form a water cavity inner wall, a heat exchange water cavity 65 is enclosed between the water cavity inner wall and the inner wall of the heat exchange cylinder 61, one side of the heat exchange water cavity 65 is communicated with a water inlet pipe 66, and the other side is communicated with a water outlet pipe 67.
The heat exchange cylinder 61 is provided with a heat insulating layer 68 on the outer wall.
The insulating layer 68 is made of a common insulating material, and can effectively reduce the heat emitted to the environment through the cylinder wall, improve the recovery rate of waste heat and reduce the temperature rise of a laboratory.
The water inlet pipe 66 is communicated with the top of the heat exchange water cavity 65, and the water outlet pipe 67 is communicated with the bottom of the heat exchange water cavity 65.
In this way, the just-entered low-temperature water is firstly contacted with the high-temperature exhaust gas with the temperature reduced due to heat exchange, and the water with the temperature increased to flow out of the heat exchange water cavity 65 is contacted with the high-temperature exhaust gas with the temperature not reduced due to the initial heat exchange, so that the change of the temperature difference between the water and the high-temperature exhaust gas is smoothed to the greatest extent, the uniformity of the temperature difference is the highest, and the heat exchange efficiency is the highest.
On the contrary, if the just entered low-temperature water first contacts the bottom of the water cavity inner wall with the highest temperature, the water at the water outlet pipe 67 contacts the top of the water cavity inner wall with the lowest temperature (the lowest and highest refer to the water cavity inner wall), at this time, the temperature difference between the water and the water cavity inner wall reaches the maximum at the bottom of the water cavity inner wall, the temperature difference is the least at the water outlet pipe 67, and although the heat exchange efficiency of the bottom is improved, the heat exchange efficiency of the middle and upper parts is greatly reduced, and the overall heat exchange efficiency is lower.
The top of the heat exchange cover 63 is connected with a hanging plate 69 downwards, the bottom end of the hanging plate 69 is connected with a blocking plate 70, the blocking plate 70 is horizontally arranged and positioned at the middle lower part of the heat exchange cover 63, and a gap is arranged between the circumferential edge of the blocking plate 70 and the inner wall of the heat exchange cover 63. The hanging plate 69 is uniformly provided in plurality in the circumferential direction.
The baffle plate 70 can prevent the high-temperature exhaust discharged from the combustion furnace from directly flowing upward through the heat exchange cover 63, which would cause insufficient heat exchange. The high temperature exhaust gas of the combustion furnace enters the heat exchange cover 63 and is blocked by the blocking plate 70, the air flow direction becomes horizontal, and then the high temperature exhaust gas continues to flow upwards along the gap between the circumferential edge of the blocking plate 70 and the inner wall of the heat exchange cover 63 under the action of the hot gas rising principle, so that the flow speed of the high temperature exhaust gas is greatly slowed down, and the high temperature exhaust gas can more fully exchange heat with water in the heat exchange water cavity 65 through the wall of the heat exchange cover 63 when slowly passing through the heat exchange cover 63.
The top of the heat exchange barrel 61 is provided with two hanging rings 71, and a connecting line between the two hanging rings 71 passes through the vertical axis of the heat exchange barrel 61.
The water outlet pipe 67 is connected with a heat unit such as a bathroom, so as to provide domestic hot water to the outside.
As shown in fig. 11, the tail gas treatment device of the invention comprises a vertically arranged tower body 31, wherein a water tank 32 is arranged at the bottom of the tower body 31, and water is contained in the water tank 32; the side wall of the tower body 31 above the water tank 32 is provided with a tail gas inlet 33, the tail gas inlet 33 is connected with a tail gas inlet pipe 34, and the tail gas inlet pipe 34 is used for discharging tail gas into the tower body 31.
Two layers of porous plates, namely an upper porous plate 35 and a lower porous plate 36, are arranged in the tower body 31 above the tail gas inlet 33 at intervals up and down; the upper porous plate 35 is provided with an upper filler which is an acidic or alkaline filler, the lower porous plate 36 is provided with a lower filler which is an alkaline or acidic filler; the top end of the tower body 31 is connected with a box-type condenser 37 through a tail gas outlet pipe 41, and the condenser 37 is positioned above the tower body 31; the top of the condenser 37 is provided with an exhaust gas discharge port 42; the acidic or alkaline filler is an existing filler, and specific components are not described in detail, but are not shown in the figure.
A coiled pipe 38 is arranged in the condenser 37, two ends of the coiled pipe 38 extend out of the condenser 37 respectively, one end of the coiled pipe 38 is connected with a tap water inlet pipeline, the other end of the coiled pipe is connected with a tap water outlet pipeline, and the tap water inlet pipeline and the tap water outlet pipeline are conventional devices and are not shown.
A guide plate 39 is arranged in the condenser 37 below the coiled pipe 38, the guide plate 39 is arranged at a left side, a right side and a left side wall of the condenser 37, a gap is arranged between the left side of the guide plate 39 and the left side wall of the condenser 37, a gap is arranged between the right side of the guide plate 39 and the right side wall of the condenser 37, the front end of the guide plate 39 is connected with the front side wall of the condenser 37, and the rear end of the guide plate 39 is connected with the rear side wall of the condenser 37; the bottom wall of the condenser 37 on the right side of the deflector 39 is communicated with the tower body 31 through a return pipe 40, and the return pipe 40 is positioned on the right side of a tail gas outlet pipe 41.
A self-sucking pump 43 is arranged on one side of the tower body 31, a water inlet pipe of the self-sucking pump 43 is communicated with the water tank 32, a water spraying pipe 44 is horizontally arranged in the tower body 31 above the upper filler, the water spraying pipe 44 is provided with a plurality of water spraying holes, and each water spraying hole is downwards arranged; the water outlet pipe of the self-priming pump 43 is communicated with a water spraying pipe 44. The water jet holes are of conventional construction and are not shown.
The side wall of the water tank 32 is provided with a water level display tube 45, the water level display tube 45 is a transparent tube, the lower end of the water level display tube 45 is communicated with the bottom of the water tank 32, and the upper end of the water level display tube 45 is higher than the top of the water tank 32. The top of the water level display tube is open. This ensures that water will not overflow from the water level display tube 45 even when the water tank 32 is full.
When in use, waste liquid is combusted first. The first valve 6 and the second valve 7 are opened to allow the waste liquid and the high-pressure air to flow into the waste liquid combustion furnace through the waste liquid pipe 3. The high pressure gas is injected in the downstream direction from a plurality of evenly arranged gas injection ports 15 together, greatly enhancing the atomization effect. The atomized mixture is ignited by the igniter, and the atomized mixture formed by the waste liquid and the gas enters the spiral high-temperature gas flow passage 10 and burns while flowing upward spirally. The combustion distance is long, so that the atomization effect is good, and the waste liquid combustion area can be ensured to be very sufficient. The high-temperature gas formed after combustion flows out from the upper end opening of the furnace body 4, so that heat energy can be externally provided through hot water after exchange.
When the heat recovery exchanger is installed, the lifting hook of the lifting appliance hooks the two lifting rings 71 through the steel wire rope, then the heat exchange cylinder 61 is placed at the top of the furnace body of the combustion furnace, and the heat exchange cylinder 61 is fixed at the top of the furnace body of the combustion furnace through the combustion furnace connecting flange 62, the heat exchanger connecting flange 12 and the connecting bolts. The water flow for recovering heat energy is formed by the water inlet pipe 66 and the water outlet pipe 67, and cold water flows into the heat exchange water cavity 65 from the water inlet pipe 66 and flows out from the water outlet pipe 67 at the bottom.
The high temperature exhaust gas of the combustion furnace is introduced into the heat exchange cover 63 from bottom to bottom, blocked by the blocking plate 70, the air flow direction becomes horizontal, and then continues to flow upwards along the gap between the circumferential edge of the blocking plate 70 and the inner wall of the heat exchange cover 63 under the action of the hot gas rising principle, so that the flow speed of the high temperature exhaust gas is greatly slowed down, and the high temperature exhaust gas can more fully exchange heat with the water in the heat exchange water cavity 65 through the wall of the heat exchange cover 63 when slowly passing through the heat exchange cover 63.
The low-temperature water just entering is firstly contacted with the top of the inner wall of the water cavity, and the top of the inner wall of the water cavity is contacted with high-temperature exhaust gas after the temperature is reduced due to heat exchange. The water to flow out of the heat exchange water cavity 65 and having the temperature increased contacts the bottom of the water cavity inner wall, and the bottom of the water cavity inner wall contacts the high temperature exhaust gas which has just started heat exchange and has no temperature decrease.
After heat exchange, the tail gas formed after the combustion of the liquid fuel enters the bottom of the tower body 31 through the tail gas inlet pipe 34, upwards passes through two layers of porous plates and fillers, and then enters the condenser 37 through the tail gas outlet pipe 41. The self-priming pump 43 is started, and the self-priming pump 43 pumps water in the water tank 32 into the top of the tower body 31.
The two layers of fillers are respectively acid fillers and alkaline fillers, and alkaline components contained in tail gas are absorbed when the tail gas passes through the acid fillers; the tail gas is absorbed by the acidic components contained in the tail gas when the tail gas passes through the alkaline filling material. Therefore, after the tail gas is absorbed by the two layers of fillers, the harmful gas in the tail gas is effectively absorbed by the fillers.
The spray pipe 44 sprays water downwardly onto the upper packing and the water must also pass through the lower packing during the downward flow. The filler containing water absorbs heat in the exhaust gas on the one hand and increases the adsorption effect of the filler on harmful substances in the exhaust gas on the other hand.
The tail gas is absorbed by the acidic packing, the alkaline packing and water and then discharged into the condenser 37. The tail gas contains more water vapor, and the water vapor is condensed into water after meeting the serpentine pipe 38 and drops on the guide plate 39, flows rightward to the bottom of the condenser 37 along the guide plate 39, and finally flows back into the tower body 31 through the return pipe 40 to prevent water accumulation in the condenser 37. The laminar flow plate can prevent the condenser 37 from directly dropping into the exhaust gas outlet pipe 41. Condensate water flows back into the tower 31 from the return pipe 40 at one side, and the upward flow of the tail gas through the tail gas outlet pipe 41 is not affected.
The above embodiments are only for illustrating the technical solution of the present invention, and it should be understood by those skilled in the art that although the present invention has been described in detail with reference to the above embodiments: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, which is intended to be encompassed by the claims.
Claims (6)
1. Waste liquid combustion treatment system, its characterized in that: the device comprises a waste liquid combustion device, a heat recovery heat exchanger and a tail gas treatment device;
the waste liquid combustion device comprises a collecting tank for containing waste liquid fuel and a high-pressure air source for providing compressed air, and the collecting tank is connected with a waste liquid combustion furnace through a waste liquid pipe; taking the flow direction of the waste liquid as the downstream direction;
the waste liquid combustion furnace comprises a steel furnace body, the horizontal section of the furnace body is circular, and a refractory clay layer is arranged on the inner wall of the furnace body; the lower end of the furnace body is closed, and the upper end of the furnace body is provided with an opening;
the waste liquid pipe is connected to the lower part of the furnace body; the high-pressure air source is communicated with the waste liquid pipe through a high-pressure air pipe, the high-pressure air pipe is inclined towards the downstream direction of the waste liquid pipe, and the joint of the high-pressure air pipe and the waste liquid pipe is positioned at the downstream end part of the waste liquid pipe;
the upstream end of the waste liquid pipe is provided with a first valve, and the high-pressure air pipe is provided with a second valve; an igniter is arranged at the opening of one end of the waste liquid pipe extending into the furnace body; an annular heat exchanger connecting flange is arranged at the top of the furnace body, and threaded holes for connection are uniformly formed in the heat exchanger connecting flange;
the heat recovery heat exchanger comprises a heat exchange cylinder body which is vertically arranged, a combustion furnace connecting flange is arranged at the bottom end of the heat exchange cylinder body, and the combustion furnace connecting flange is used for connecting a gas outlet of a combustion furnace;
the upper end and the lower end of the heat exchange cylinder body are both open, the bottom end of the inner wall of the heat exchange cylinder body is upwards connected with a conical heat exchange cover, and the heat exchange cover is arranged in a narrow and wide way at the upper part and is made of metal materials; the bottom end of the heat exchange cover is connected with the inner wall of the heat exchange cylinder in a sealing way along the circumferential direction, and the heat exchange cover and the heat exchange cylinder are coaxially arranged;
the top of the heat exchange cover is communicated with a tail gas inlet pipe with a circular section; the outer wall of the heat exchange cover and the outer wall of the tail gas inlet pipe form a water cavity inner wall, a heat exchange water cavity is enclosed between the water cavity inner wall and the heat exchange cylinder inner wall, one side of the heat exchange water cavity is communicated with a water inlet pipe, and the other side of the heat exchange water cavity is communicated with a water outlet pipe;
the combustion furnace connecting flange is connected with the heat exchanger connecting flange through bolts;
the tail gas treatment device comprises a vertically arranged tower body, a water tank is arranged at the bottom of the tower body, and water is contained in the water tank; a tail gas inlet is formed in the side wall of the tower body above the water tank and is connected with the tail gas inlet pipe, and two layers of porous plates are arranged at intervals in the tower body above the tail gas inlet, namely an upper layer of porous plate and a lower layer of porous plate; the upper porous plate is provided with an upper filler which is an acidic or alkaline filler, the lower porous plate is provided with a lower filler which is an alkaline or acidic filler; the top end of the tower body is connected with a condenser through a tail gas outlet pipe, and the condenser is positioned above the tower body; the top of the condenser is provided with a tail gas discharge port;
a coiled pipe is arranged in the condenser, two ends of the coiled pipe extend out of the condenser respectively, one end of the coiled pipe is connected with a tap water inlet pipeline, and the other end of the coiled pipe is connected with a tap water outlet pipeline;
a guide plate is arranged in the condenser below the coiled pipe, the guide plate is arranged at the left side, the right side and the left side wall of the condenser in a low mode, a gap is arranged between the left side of the guide plate and the left side wall of the condenser, a gap is arranged between the right side of the guide plate and the right side wall of the condenser, the front end of the guide plate is connected with the front side wall of the condenser, and the rear end of the guide plate is connected with the rear side wall of the condenser; the bottom wall of the condenser on the right side of the guide plate is communicated with the tower body through a return pipe, and the return pipe is positioned on the right side of the tail gas outlet pipe;
an atomization device is arranged in the downstream end part of the waste liquid pipe, the atomization device comprises an annular shell, and the outer surface of the annular shell is connected with the inner surface of the waste liquid pipe; the annular shell and the waste liquid pipe are coaxially arranged, an annular gas distribution pipe is arranged in the annular shell, and the center of the annular gas distribution pipe is positioned on the axis of the waste liquid pipe; a plurality of air nozzles are uniformly arranged on the surface of one side of the annular air distribution pipe facing the downstream direction; the high-pressure air pipe extends into the waste liquid pipe and the annular shell in a sealing way and is communicated with the annular air distribution pipe;
the outer wall of the heat exchange cylinder body is provided with a heat insulation layer; the water inlet pipe is communicated with the top of the heat exchange water cavity, and the water outlet pipe is communicated with the bottom of the heat exchange water cavity;
the top of the heat exchange cover is downwards connected with a hanging plate, the bottom end of the hanging plate is connected with a blocking plate, the blocking plate is horizontally arranged and positioned at the middle lower part of the heat exchange cover, and a gap is arranged between the circumferential edge of the blocking plate and the inner wall of the heat exchange cover.
2. The waste liquid combustion treatment system as set forth in claim 1, wherein: a vertically arranged supporting rod is arranged at the center of the furnace body, a spiral blade is fixedly connected to the supporting rod, the outer edge of the spiral blade is in sliding fit with the inner wall of the furnace body, the spiral blade and the inner wall of the furnace body enclose a spiral high-temperature gas flow passage, and the upper end of the high-temperature gas flow passage is connected with an opening of the furnace body; the downstream end of the waste liquid pipe extends into the bottom of the high-temperature gas flow channel.
3. The waste liquid combustion treatment system according to claim 2, wherein: an extension line of an axis of a downstream end portion of the waste liquid pipe is offset from a center of the furnace body.
4. A waste liquid combustion treatment system as claimed in any one of claims 1 to 3, wherein: the top of the heat exchange cylinder body is provided with two hanging rings, and a connecting line between the two hanging rings passes through the vertical axis of the heat exchange cylinder body; and the water outlet pipe is connected with a heat unit.
5. A waste liquid combustion treatment system as claimed in any one of claims 1 to 3, wherein: a self-sucking pump is arranged on one side of the tower body, a water inlet pipe of the self-sucking pump is communicated with the water tank, a water spraying pipe is horizontally arranged in the tower body above the upper layer of filler, the water spraying pipe is provided with a plurality of water spraying holes, and each water spraying hole is downwards arranged; the water outlet pipe of the self-priming pump is communicated with the water spraying pipe.
6. A waste liquid combustion treatment system as claimed in any one of claims 1 to 3, wherein: the side wall of the water tank is provided with a water level display tube, the water level display tube is a transparent tube, the lower end of the water level display tube is communicated with the bottom of the water tank, and the upper end of the water level display tube is higher than the top of the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811111884.2A CN108954347B (en) | 2018-09-25 | 2018-09-25 | Waste liquid combustion treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811111884.2A CN108954347B (en) | 2018-09-25 | 2018-09-25 | Waste liquid combustion treatment system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108954347A CN108954347A (en) | 2018-12-07 |
| CN108954347B true CN108954347B (en) | 2023-09-15 |
Family
ID=64471688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811111884.2A Active CN108954347B (en) | 2018-09-25 | 2018-09-25 | Waste liquid combustion treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108954347B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115654489B (en) * | 2022-09-29 | 2023-05-30 | 胜利油田华海石化有限责任公司 | Heating furnace condensate cleaning device with ponding prevention and high multiplexing function of thermal cycle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11141840A (en) * | 1997-11-14 | 1999-05-28 | Asahi Eng Co Ltd | Waste liquie incinerating apparatus |
| CN101398181A (en) * | 2007-09-24 | 2009-04-01 | 广州德上能源技术有限公司 | Flue gas waste heat recovery method and system for oil and gas boiler |
| CN202002119U (en) * | 2010-11-11 | 2011-10-05 | 上海煜工环保科技有限公司 | Treatment device for condensation, gasification and incineration of organic waste liquid via flue gas |
| CN106861388A (en) * | 2017-03-23 | 2017-06-20 | 杭州博控机电设备有限公司 | A kind of oxirane exhaust-gas treatment and energy-recuperation system |
| CN207365109U (en) * | 2017-06-01 | 2018-05-15 | 姚贤卿 | A kind of compound rotation burning type uses civil heating stove |
| CN207779076U (en) * | 2018-04-03 | 2018-08-28 | 石家庄市惠源淀粉有限公司 | Starch factory tail gas waste heat utilization system |
-
2018
- 2018-09-25 CN CN201811111884.2A patent/CN108954347B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11141840A (en) * | 1997-11-14 | 1999-05-28 | Asahi Eng Co Ltd | Waste liquie incinerating apparatus |
| CN101398181A (en) * | 2007-09-24 | 2009-04-01 | 广州德上能源技术有限公司 | Flue gas waste heat recovery method and system for oil and gas boiler |
| CN202002119U (en) * | 2010-11-11 | 2011-10-05 | 上海煜工环保科技有限公司 | Treatment device for condensation, gasification and incineration of organic waste liquid via flue gas |
| CN106861388A (en) * | 2017-03-23 | 2017-06-20 | 杭州博控机电设备有限公司 | A kind of oxirane exhaust-gas treatment and energy-recuperation system |
| CN207365109U (en) * | 2017-06-01 | 2018-05-15 | 姚贤卿 | A kind of compound rotation burning type uses civil heating stove |
| CN207779076U (en) * | 2018-04-03 | 2018-08-28 | 石家庄市惠源淀粉有限公司 | Starch factory tail gas waste heat utilization system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108954347A (en) | 2018-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2013063906A1 (en) | Method for heating cooling liquid to start preheating and heating system | |
| CN108954347B (en) | Waste liquid combustion treatment system | |
| CN201954596U (en) | Oil and gas dual-purpose full-automatic civil kitchen range | |
| KR101211035B1 (en) | Boiler for refuse derived fuel | |
| CN109404986B (en) | W-combustion type energy-saving gas stove | |
| CN210832553U (en) | Preheating type combustion coil condensation heat exchanger | |
| CN208779446U (en) | A kind of alcohol based burning machine with efficient burning | |
| CN100470162C (en) | Gas-fired water heating boiler | |
| CN206755170U (en) | A kind of super low NO | |
| CN207569872U (en) | Gas mixing unit and gas heater | |
| CN202595045U (en) | Oil refining furnace with energy-saving and emission-reduction function | |
| RU2546683C1 (en) | Heating oven | |
| TWI647999B (en) | A special water heating device and method for breeding fish gills. | |
| CN209960497U (en) | High-pressure-drop high-wind-speed low-NOx-emission gas burner | |
| CN103968384B (en) | The burner apparatus exchanged heat using high-temperature flue gas | |
| CN209003653U (en) | Blowing-type diffusion combustion oven | |
| CN209147110U (en) | Incineration of liquor processing system | |
| CN105757971A (en) | Waste smoke preheating boiler | |
| CN205174467U (en) | Gasification combustion system of alcohols fuel on kitchen range | |
| CN205447751U (en) | Energy -saving gas combustion device | |
| CN207214150U (en) | A kind of methyl alcohol vaporizing heating is cooked dual-purpose stove | |
| CN1908512A (en) | Atmospheric energy-saving pan shell type fast steam boiler | |
| CN209638990U (en) | A kind of fuel oil heating being rapidly heated | |
| CN210801114U (en) | Energy-saving fuel steam generator | |
| CN113932445A (en) | Alcohol-hydrogen heating heat exchange type boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |