Abrégé

A selective catalytic reduction reactor device, a longitudinal cross section of said device being in the shape of a right trapezoid, the top of said device being an inclined surface, and an internal vertical flue of said device being sequentially provided, from top to bottom, an inclined top reactor inlet (2), a rectifying device (4), a catalyst reactor (5) and a reactor outlet (6), the inclined top reactor inlet (2) being further connected to a horizontal inlet flue (1); the top surface of the inclined top reactor inlet (2) is an inclined surface, and the starting position of the inclination is inside the vertical flue and inclined downward in a direction away from the horizontal inlet flue (1); there is a distance, in the vertical direction, between the tail end of the rectifying device (4) and the tail end of the top surface of the inclined top reactor inlet (2), and as for different regions of the rectifying device (4), the distances between rectifying plates are different.

Classes IPC  ?

• B01D 53/86 - Procédés catalytiques
• B01D 53/56 - Oxydes d'azote

Abrégé

Provided are a water treatment device and a method using waste heat from a power plant. The water treatment device using waste heat from the power plant comprises: a heating pool (2) for heating raw water. A heat exchanger (6) is arranged in the heating pool. A steam exhaust pipeline A is provided outside the heating pool (2). An evacuation pump (4) and a steam compressor (5) are sequentially arranged on the steam exhaust pipeline A. The steam exhaust enters the steam compressor (5) through the evacuation pump (4). An air outlet of the steam compressor (5) is connected with an air inlet of the heat exchanger (6), and an air outlet of the heat exchanger (6) is connected with a boiler (7). Also comprised is a membrane distillation device (8), wherein a hot side solution end water inlet is connected with a water outlet of the heating pool (2), a hot side solution end water outlet is connected with a water inlet B of the heating pool (2) via a water pump (9), and a steam outlet of the membrane distillation unit (8) is connected to a water production pool (11) through a condenser (10). The present invention can effectively save water and recover energy, while significantly reducing the operating costs of membrane distillation, producing high quality water, and improving thermal efficiency of the entire power plant.

Classes IPC  ?

• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• C02F 9/10 - Traitement thermique

Abrégé

A power plant seawater desalination treatment device, comprising: a pretreatment device (1); a preheater (3), a seawater pipeline A being arranged therein, wherein the preheater is connected to the pretreatment device (1) and a regulating tank (4) by means of the seawater pipeline A, and waste steam is introduced into the preheater (3); the regulating tank (4), a heat exchanger (5) being arranged therein, and a water outlet of the regulating tank (4) being connected to a primary heater (7), a secondary heater (8) and a tertiary heater (9) in sequence by means of a seawater pipeline B; an intermediate tank (10) connected to a water outlet of the seawater pipeline B; a membrane distillation device (11), a water inlet thereof being connected to a water outlet of the intermediate water tank (10), a water outlet of the membrane distillation device (11) being connected to a water inlet of the regulating tank (4), and a water producing tank (13) being connected to a water producing outlet of the membrane distillation device (11). Also disclosed is a power plant sea water desalination treatment method using the power plant sea water desalination treatment device.

Classes IPC  ?

• C02F 1/04 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par chauffage par distillation ou évaporation
• C02F 1/08 - Évaporation en couche mince
• C02F 103/08 - Eau de mer, p. ex. pour le dessalement

Abrégé

An indirect air-cooling unit heat recovery and water treatment device. Raw water enters a pretreatment device (1), an outlet end of the pretreatment device (1) being connected to an inlet end of a regulating tank (2); an outlet end of the regulating tank (2) is connected to an inlet end of a condenser (4) by means of a first water pump (3), and an outlet end of the condenser (4) is connected to an inlet end of a middle water tank (5); waste steam enters the condenser (4), and condensed water flows back to a boiler (6); an inlet end of a second water pump (9) is connected to an outlet end of the middle water tank (5), and an outlet end of the second water pump (9) is connected to an inlet end of a membrane distillation device (8); an outlet end of the membrane distillation device (8) is connected to a water production tank (10); alternatively, an outlet end of the middle water tank (5) is connected to an inlet end of the membrane distillation device (8), an outlet end of the membrane distillation device (8) is connected to the water production tank (10); an inlet end of the second water pump (9) is connected to an outlet end of the membrane distillation device (8), and an outlet end of the second water pump (9) is connected to an inlet end of the regulating tank (2). Also disclosed is an indirect air-cooling unit heat recovery and water treatment method.

Classes IPC  ?

• C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
• F22D 11/06 - Aménagement des pompes d'alimentation en eau pour retour des condensats à la chaudière

Abrégé

A membrane distillation crystallization treatment device and method. The device comprises: a heating device A (2) used for heating raw water; a crystallization tank (3), a water inlet of the crystallization tank (3) being connected to a water outlet of the heating device A (2), a heating device B (7), a stirring device (8) and a membrane assembly (4) being separately provided in the crystallization tank (3), the heating device B (7) and the stirring device (8) being separately located at the bottom of the crystallization tank (3), and the membrane assembly (4) being located above the heating device B (7) and the stirring device (8); a water generation tank (6), the top end of the membrane assembly (4) being connected to the water generation tank (6) by means of a condenser (5); and a sedimentation tank (9), a water outlet at the bottom of the crystallization tank (3) being connected to a water inlet of the sedimentation tank (9), a discharge port at the bottom of the sedimentation tank (9) being connected to a crystallized salt collection tank (10), and a supernatant outlet at the top of the sedimentation tank (9) being connected to a water inlet pipeline of the heating device A (2). The membrane distillation crystallization treatment device adopts a distillation concentration and crystallization integrated treatment device, and is favorable for preventing membrane pollution and reducing operation cost.

Classes IPC  ?

• B01D 61/36 - PervaporationDistillation à membranesPerméation liquide

Abrégé

A device for treating desulfurization wastewater by means of flue multi-stage evaporation, comprising: a coagulating basin (1), in which a stirrer (2) is provided; a clarification tank (4), a water inlet of which is connected to a water outlet of the coagulating basin (1); a heat exchange pool (5), a water inlet of which is connected to a water outlet of the clarification tank (4); a water distributing main pipeline, which is connected to a water outlet of the heat exchange pool (5) by means of a pump (9), a compressed air inlet (10) being further provided between the pump (9) and the water distributing main pipeline, and the water distributing main pipeline being connected to multiple water distributing branch pipelines, a tail end of each water distributing branch pipeline being provided with an atomizer; a flue (11), which is a multi-section flue, horizontal sections and vertical sections of the flue being distributed alternately, each section of the flue being respectively connected to the water distributing branch pipeline and provided with the atomizer; and a dust removing means (12), which is provided at a tail end of the flue.

Classes IPC  ?

• C02F 9/10 - Traitement thermique

Abrégé

A low-sludge-production desulfurization wastewater treatment apparatus, comprising: a primary sedimentation tank (1) communicated with a desulfurization wastewater feeding pipeline, wherein a first sludge discharging pipeline is disposed at the bottom of the primary sedimentation tank (1); a first flocculation reaction tank (3) communicated with the primary sedimentation tank (1), wherein a first reagent adding means is disposed on the first flocculation reaction tank (3); a first clarification tank (5) communicated with the first flocculation reaction tank (3), wherein a second sludge discharging pipeline is disposed at the bottom of the first clarification tank (5); a gypsum dewaterer (2) communicated with the first sludge discharging pipeline and the second sludge discharging pipeline, wherein the gypsum dewaterer (2) has a filtrate outlet which is communicated with the first flocculation reaction tank (3) by means of a backflow pipeline; and a heavy metal removal and sedimentation tank group communicated with the first clarification tank (5). Also provided is a desulfurization wastewater treatment method based on the treatment apparatus.

Classes IPC  ?

• C02F 9/04 - Traitement en plusieurs étapes de l'eau, des eaux résiduaires ou des eaux d'égout une étape au moins étant un traitement chimique
• C02F 11/12 - Traitement des boues d'égoutDispositifs à cet effet par déshydratation, séchage ou épaississement
• C02F 103/18 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de l'épuration des effluents gazeux par voie humide

Abrégé

A treatment apparatus for zero liquid discharge of desulfurization wastewater, comprising: a magnesium and heavy metal removal tank assembly; a calcium removal and sedimentation tank assembly connected to the magnesium and heavy metal removal tank assembly; a nanofiltration system (13) connected to the calcium removal and sedimentation tank assembly, the system comprising a sulfate brine outlet and a chloride water outlet, wherein the sulfate brine outlet is connected, via a brine return pipeline, to the calcium removal and sedimentation tank, and the chloride water outlet is connected, via a concentrating transfer pipeline, to a membrane distillation system (22); and an evaporation crystallizer (25) connected to a brine outlet of the membrane distillation system (22). The invention further provides a treatment method based on the treatment apparatus for zero liquid discharge of desulfurization wastewater.

Classes IPC  ?

• C02F 9/10 - Traitement thermique
• C02F 103/18 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de l'épuration des effluents gazeux par voie humide

Abrégé

Provided is a treatment apparatus and a method for softening desulfurization wastewater, comprising: a precipitation reaction tank (1) provided with a seed crystal dispensing device; a primary sedimentation tank (3) connected to the precipitation reaction tank (1), with a first sludge discharge pipeline (5) provided at the bottom of the primary sedimentation tank, wherein the first sludge discharge pipeline (5) is connected, via a return pipeline (4), to the precipitation reaction tank (1); and a calcium removal and sedimentation tank assembly connected to the primary sedimentation tank (3). Further provided is a method utilizing the softening treatment apparatus for softening desulfurization wastewater. The method is able to reduce softening cost while meeting a standard for discharging heavy metals.

Classes IPC  ?

• C02F 9/04 - Traitement en plusieurs étapes de l'eau, des eaux résiduaires ou des eaux d'égout une étape au moins étant un traitement chimique
• C02F 1/52 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par floculation ou précipitation d'impuretés en suspension
• C02F 101/20 - Métaux lourds ou leurs composés

Abrégé

A treatment apparatus for zero liquid discharge of desulfurization wastewater, comprising: a magnesium and heavy metal removal tank assembly; a calcium removal and sedimentation tank assembly connected to the magnesium and heavy metal removal tank assembly; a nanofiltration system (13) connected to the calcium removal and sedimentation tank assembly, the system comprising a sulfate brine outlet and a chloride water outlet, wherein the sulfate brine outlet is connected, via a brine return pipeline (14), to the calcium removal and sedimentation tank assembly, and the chloride water outlet is connected, via a concentrating transfer pipeline, to a multi-stage reverse osmosis system; and an evaporation crystallizer (20) connected to a brine outlet of the multi-stage reverse osmosis system. The invention further provides a treatment method based on the treatment apparatus for zero liquid discharge of desulfurization wastewater.

Classes IPC  ?

• C02F 9/10 - Traitement thermique
• C02F 103/18 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de l'épuration des effluents gazeux par voie humide

Abrégé

Provided is a treatment apparatus and method for softening desulfurization wastewater, comprising: a magnesium and heavy metal removal tank (1) provided with a first chemical dispensing pipeline; a primary sedimentation tank (3) connected to the magnesium and heavy metal removal tank (1), with a first sludge discharge pipeline (4) provided at the bottom of the primary sedimentation tank; a calcium removal and sedimentation tank assembly connected to the primary sedimentation tank (3), the calcium removal and sedimentation tank assembly comprises a primary calcium removal tank (5), a secondary calcium removal tank (7), and a secondary sedimentation tank (9), wherein the primary calcium removal tank (5) is provided with a second chemical dispensing pipeline (5) and the secondary calcium removal tank (7) is provided with a third chemical dispensing pipeline; a second sludge discharge pipeline (10) is provided at the bottom of the secondary sedimentation tank (9); and the secondary sedimentation tank is further provided with a water discharge pipeline connected to a neutralizing agent dispensing pipeline. Further provided is a method for softening desulfurization wastewater using the softening treatment apparatus to ensure that the desulfurization wastewater meets a requirement for RO and other membrane separation technologies. The method also greatly reduces operational and processing costs.

Classes IPC  ?

• C02F 9/04 - Traitement en plusieurs étapes de l'eau, des eaux résiduaires ou des eaux d'égout une étape au moins étant un traitement chimique
• C02F 1/52 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par floculation ou précipitation d'impuretés en suspension
• C02F 101/20 - Métaux lourds ou leurs composés