Multi-furnace connected incineration flue gas treatment and steam power generation system

Abstract

This invention provides a multi-furnace connected incineration waste gas treatment and steam power generation system, comprising multiple incinerator units, multiple flue gas guide pipes, a sealed flue gas treatment chamber, multiple vertical baffles, a top spray unit, a bottom collection and settling tank, and a steam power generation unit. The multiple incinerator units are arranged in a row, and the incineration waste gas is introduced into the sealed flue gas treatment chamber via the flue gas guide pipes. The vertical baffles change the flow direction and reduce the velocity of the incineration waste gas. The top spray unit sprays water mist downwards to capture soot and wash the baffles, causing the soot-containing liquid to fall into the bottom collection and settling tank. The steam power generation unit uses the heat energy from combustion to generate steam and produce electricity.

Claims

1. A multi-furnace connected incineration waste gas treatment and steam power generation system, comprising: a plurality of incinerator units arranged in at least one first furnace row and one second furnace row, each incinerator unit being used to incinerate waste and generate incineration waste gas; a plurality of flue gas guide pipes respectively connected to the top of the plurality of incinerator units to exhaust the incineration waste gas generated by each incinerator unit; a sealed flue gas treatment chamber disposed between the first furnace row and the second furnace row and connected to the plurality of flue gas guide pipes, so that the incineration waste gas generated by the plurality of incinerator units is introduced into the sealed flue gas treatment chamber; a plurality of vertical baffles disposed in the sealed flue gas treatment chamber and arranged in a plurality of rows, so that the incineration waste gas entering the sealed flue gas treatment chamber changes its flow direction and reduces its flow velocity between the plurality of vertical baffles; A top spray unit, disposed above the enclosed flue gas treatment chamber, includes a plurality of downward sprayers to spray water mist onto the incineration exhaust gas and the plurality of vertical baffles within the enclosed flue gas treatment chamber, causing the soot in the incineration exhaust gas to adhere to the plurality of vertical baffles or be captured by the water mist and fall downwards; a bottom liquid collection and settling tank, disposed at the bottom of the enclosed flue gas treatment chamber, is used to collect the soot-containing liquid guided down by the plurality of vertical baffles and the top spray unit; and a steam power generation unit, thermally coupled to the plurality of incinerator units, to utilize the combustion heat energy of the plurality of incinerator units to generate steam and generate electricity.

2. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 1, wherein the first furnace column contains thirty incineration furnace units, the second furnace column contains thirty incineration furnace units, and the plurality of incineration furnace units constitute a total of sixty incineration furnace units.

3. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 1, wherein each of the flue gas guide pipes includes a first pipe section, a tapering pipe section and a bend pipe section, the first pipe section is connected to the corresponding incinerator unit, the tapering pipe section is connected to the first pipe section, and the flow cross section of the first pipe section is larger than at least a portion of the flow cross section of the tapering pipe section, so that each of the flue gas guide pipes forms a flue gas guiding structure that gradually decreases in size; wherein the bend pipe section is connected to the tapering pipe section and guides the incineration flue gas to the closed flue gas treatment chamber.

4. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 1, wherein the plurality of vertical baffles are a plurality of stainless steel vertical corrugated plates, and each stainless steel vertical corrugated plate has a plate width of approximately 85 cm, and a passage space is reserved on the side of the stainless steel vertical corrugated plate for the passage of the incineration flue gas and for personnel to pass through and maintain.

5. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 1, wherein the top spray unit includes a plurality of pre-embedded pipes and a plurality of sprayers, the plurality of pre-embedded pipes being pre-embedded in the top floor of one of the sealed flue gas treatment chambers, and the plurality of sprayers extending into the sealed flue gas treatment chamber through the plurality of pre-embedded pipes and arranged along the top floor at a predetermined interval.

6. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 1, wherein the bottom collection and settling tank has a high end, a low end, and an inclined bottom surface sloping from the high end to the low end, so that the soot-containing liquid flows along the inclined bottom surface to the low end; wherein the low end is provided with a pumping section for pumping the soot-containing liquid out of the bottom collection and settling tank; wherein the multi-furnace connected incineration flue gas treatment and steam power generation system further includes a dewatering unit, which is connected to the pumping section for dewatering the soot-containing liquid pumped out of the bottom collection and settling tank to form a sludge cake.

7. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 1, wherein the steam power generation unit includes at least one water container, at least one steam conduit and a generator set, the at least one water container is disposed above at least one of the plurality of incinerator units and is heated by the incineration heat energy to generate steam; the at least one steam conduit connects the at least one water container and the generator set to introduce the steam into the generator set; wherein the at least one steam conduit includes a tapering section, so that the steam generated by the water container is concentrated and guided to the generator set through the tapering section.

8. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 7, wherein the at least one water reservoir includes a plurality of water reservoirs respectively corresponding to the plurality of incinerator units, each water reservoir is connected to a plurality of branch steam pipes, and one outlet end of each branch steam pipe is directly connected to one turbine inlet or steam inlet of the generator set.

9. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 8, wherein each branch steam pipe includes a tapering section, and the tapering section has a flow channel cross-section that is wider at the bottom and narrower at the top or gradually decreases in size.

10. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 8, wherein each of the water containers is connected to ten sets of the branch steam pipes.

11. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 1, wherein the plurality of incinerator units, the plurality of flue gas guide pipes, the sealed flue gas treatment chamber, the top spray unit and the bottom collection and settling tank together constitute an incineration flue gas treatment path that prevents the incineration flue gas from being directly discharged through the independent external chimneys of each incinerator unit, but instead guides it into the sealed flue gas treatment chamber for wet capture and settling treatment.

12. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 1, wherein the plurality of vertical baffle systems are detachably installed in the sealed flue gas treatment chamber, so that the plurality of vertical baffles can be removed from the sealed flue gas treatment chamber for cleaning, replacement or maintenance.

13. The multi-furnace connected incineration flue gas treatment and steam power generation system as described in claim 1, wherein each of the flue gas guide pipes is provided with a regulating valve or an isolation valve to control the connection status between the corresponding incinerator unit and the closed flue gas treatment chamber.

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