SA113340644B1 - Oxidation basin, seawater exhaust-gas desulfurization system, and power generation system - Google Patents

Abstract

An oxidation basin is provided, including: a dilution ‎seawater supply unit connected to a basin body, for ‎supplying dilution seawater to sulfur content absorbing ‎seawater containing sulfur content discharged from an ‎exhaust-gas desulfurization absorber; an air supply unit ‎provided inside the basin body, for supplying air to the ‎sulfur content absorbing seawater discharged from the ‎exhaust-gas desulfurization absorber; and a dissolved oxygen ‎level measurement device provided inside the basin body, for ‎measuring a dissolved oxygen level in the sulfur content ‎absorbing seawater, wherein the supply of air to the sulfur ‎content absorbing seawater from the air supply unit is ‎adjusted based on a relation between a length of the ‎oxidation basin obtained in advance and a dissolved oxygen ‎level in the sulfur content absorbing seawater.‎ Fig 1‎

Description

_— \ _ oxidation basin; Oxidation basin, seawater exhaust-gas desulfurization system, and power generation system Full description

Invention background

The present invention relates to an oxidation basin in which oxidation treatment is carried out

treatment Absorbing seawater The content contains sulfur The sulfur content contains

Sulfur content where desulfurization (ale) is done using sea water and desulfurization system © cscawater exhaust-gas and power generation system

power generation system

And even oY in a power plant uses coal ¢ and crude oil ¢ and the like

ads or Sle combustion exhaust-gas (in this document; lad follows; referred to

(ple Jl is agitated from a boiler boiler by burning a fossil fuel such as pad that has a sulfur content such as L(SOX)sulfur oxide for that reason; desulfurization is carried out from

exhaust gas And release it to the atmosphere after removing sulfur oxide (SOX) such as sulfur dioxide

dioxide (502) contained in the exhaust gas. In this regard; Limestone-gypsum treatment is suggested

limestone-gypsum treatment ¢ and asad spray dryer method + water method

seawater method; And the like, as a desulfurization treatment method 0

It is likely that an electric power plant and the like will be built in the location

Facing the sea where a large amount of SUA coolant is used Reason Aza is suggested

Desulfurization apparatus from the scawater exhaust-gas

Seawater desulfurization is used where desulfurization is carried out using seawater as a material

dad

Absorption The absorption of sulfur oxide in the exhaust gas from the point of view of production cost pressure

required for desulfurization treatment.

The seawater waste gas desulfurization equipment supplies the sea water and exhaust gas boiler in the desulfurization tower

longitudinal desulfurization tower (absorber) in angular or tubular shape almost like a cylinder; removes Sox by making gas-liquid contact using seawater

as an absorbent. Sea water (sea water absorbing sulfur content) is supplied after removing the used sulfur

As adsorbent inside desulfurization tower to oxidation tank. Absorbent sea water is mixed to content

Sulfur flowing into the oxidation pool with sea water as it is not used for desulfurization

desulfurization; and distill it. add to that; Absorbent seawater is oxidized to sulfur content and sulfur content

0 carbon decarbonated by microscopic bubbles flowing out of an aeration device mounted on the bottom of the oxidation bath (eg JEAN see Japanese patent publication whose technical content has been disclosed no. 5974-7509 (175). In this way, seawater absorbing sulfur content is discharged after exposure to oxidation 503 and aeration treatment to 002 until a local environmental standard is achieved.

VO as de the oxidation pool is a long channel (Seawater Oxidation Treatment System ¢ 5015) having an open upper channel and having a width of about 0 to 56 meters and a length of about 100 meters to Jie Yoo and requires a large installation space. in the oxidation pool; Atmospheric oxygen is supplied to almost the entire space at the bottom of the oxidation tank from an aerator fitted on the bottom of the oxidation tank.

0 - A conventionally used oxidation tank involves a high operating cost for the operation of the oxidation tank since atmospheric oxygen is supplied to seawater absorbing sulfur content flowing into the oxidation tank from the total bottom area of the oxidation tank. add to that; There is a position where the amount of oxygen is greater than the oxygen that is used to oxidize 803 and aerate 002 in seawater absorbing the supplied sulfur content; The oxidation of 503 and the aeration of 602 are carried out in absorbent seawater

YO to the sulfur content in effectively due to the oxygen supplied in excess.

a

The patent document (Japanese patent publication disclosed No. 71007- 1/4) aims to provide an “exhaust gas desulfurization method” = sea-type and an apparatus desulfurization device flue gas seawater as it does not require large installation area and has low energy consumption© and high efficiency.Marine type exhaust gas desulfurization method includes sea water supply and dwater supply respectively and exhaust gas containing sulfur oxide to a scrubber ¢scrubber continuously discharges cleaned exhaust gas and acidic water that has absorbed sulfur oxide esulfur oxide eldnjecting secondary seawater to acidic seawater to obtain mixed seawater 0 introduction of air to mixed seawater injection of tertiary seawater seawater to obtain remixed seawater discharge of remixed seawater General description of the invention according For a first aspect of the present invention, an oxidation basin comprising: a sea water supply unit is provided A diluter connected to a dilution seawater supply unit with a basin body; to supply sea water 15 _ diluted to sulfur content absorbent sea water containing sulfur content discharged from an exhaust-gas desulfurization absorber pile; an air supply unit fitted within the body of the tank to supply air to the seawater absorbent of a hatched sulfur content from an exhaust gas desulfurization absorber; A device for measuring the dissolved oxygen level is equipped inside the body of the tank; to measure the level of dissolved oxygen in Ye sea water absorbing sulfur content; Wherein the air supply to the seawater absorbing sulfur content is modified from the air supply unit based on a relationship between in accordance with a third aspect of the present invention; A power generation system is offered including: boiler; and a steam turbine to generate steam using exhaust gas emitted from the boiler as a heat source so as to stir the power of the pow the length of the oxidation pool produced in advance and the level of dissolved oxygen in the sea slo Yo absorbing sulfur content.

El According to a second aspect of the present invention; The Seawater Exhaust Gas Desulfurization System is offered including: an Exhaust Gas Desulfurization Scrubber to bring the exhaust gas and seawater into gas-liquid contact with each other until the exhaust gas is purified; An oxidation basin according to the first side is equipped on the seawater supply fine downstream side of the exhaust gas desulphurization absorber; a seawater discharge line for supplying seawater to an exhaust gas desulfurization absorber; and a discharge line © 3 J desorption desorption seawater to supply sorbent seawater of an alarmed sulfur content from the exhaust gas sulfur to the oxidation pool; and a diluted seawater supply line for the supply of seawater to one or more of the seawater desorption line and oxidation basin. IS seawater according to pale using the steam generated; the er generator gas desulphurization system for extraction and circulation of steam water in the steam turbine; And a 0000©: Cia ¢ method for the second side 0 _ to remove nitrates from exhaust-gas denitration device nitrates from exhaust gas. for removing dust in the boiler exhaust gas; and a dust collector Brief explanation of the drawings: It is a schematic diagram showing the design of the desulphurization system from the waste water gas Fig. 1 The sea on which an oxidation basin is placed according to the first embodiment of the invention of Vo Fig. ? It is a graph showing an example of a relationship between the length of the oxidation pool and the level of dissolved oxygen in sea water absorbing sulfur content; Figure ? : is a sample graph showing an example of a relationship between oxidation pool length; Concentration ¢ sea absorbent of sulfur content and dissolved oxygen level ela dissolved in -S0O3

ERE Fig. 2: is an exemplary diagram showing a relationship between oxidation pool length and air supply. A) Schematic illustrating the design of a power generation system according to a second embodiment of Sly. Fig. ©: is a drawing of the invention. Detailed description: Make

+ Embodiments of the present invention have been presented from the point of view of the above problems; The objective of the embodiments is to provide an efficient oxidation basin for carrying out the treatment of sorbent seawater for sulfur content; reducing the total amount of air supplied into the oxidation bath; Seawater waste gas desulphurization system and power generation system. 0 according to embodiments; It is possible to effectively treat seawater of sulfur content; and reduced the total amount of air supplied into the oxidation bath. In this document czy the invention will be described in detail with reference to the drawings. It should be noted that the invention is not limited by the embodiments below. In addition ola) an element in the embodiments below includes an element which can easily be assumed by those skilled in the art; where the same element is 0 to a large extent i.e. it is equivalent to it. Furthermore it; The items described in the embodiments below can be conveniently grouped. In the first embodiment, a seawater exhaust-gas desulfurization system will be described on which an oxidation basin is placed according to a first embodiment of the invention with reference to the drawings. Fig. 1 is a schematic diagram showing the design of a seawater waste gas desulphurization system1 upon which an oxidation basin is placed according to the first embodiment of the invention. As shown in Fig. 1, the seawater exhaust gas desulfurization system 01 comprises an exhaust gas desulfurization absorber 10; an oxidation basin 11 according to the embodiment; VY) Vd seawater supply fines yall supplying seawater 11 to the exhaust gas desulfurization absorber VY) Vd seawater supply fines yall sulfur discharge line Yo supplying sulfur seawater VE containing sulfur content evacuated from exhaust gas desulfurization absorber 11 to oxidation sump VY dag lines diluted seawater Voly Ved supplying seawater 11 to absorbing seawater line discharge (alll Tine for VY sulfur content and oxidation pool AY) Seawater 11 is pumped by a YY pump from Bahr 1? to dada line NV YO seawater And part of the sea water 1” is supplied in the form of sea water for absorption IVY to the exhaust gas desulfurization device 11 through the sea water dag line L 11 by means of a pump 77 or agitation by gravity

qualitative. A part of the remaining sea water 17 in the form of diluted sea water 11b is fed to the seawater discharge line absorbing sulfur content 101 through the diluted seawater supply line 620 and the rest of the diluted seawater 11b is supplied in the form of diluted sea water 11c To the oxidation pool VY via a seawater supply line diluted to 51. The seawater pumped by Hale by the pump Yy fo} from sea 1 is used on ela ia sea VY . However, the invention is not limited to that;

Drainage of seawater and similar condensate discharges (not shown) may be used. The exhaust gas desulfurization device Sle 11 is a tower that purifies the YO ale gas by making the exhaust gas YO exhaust- gas and the absorbed sea j VY in a gas-liquid contact with each other. In an exhaust gas desulfurization absorber (OY) a desulfurization process is performed

0 sulfur content in exhaust gas YO by jetting absorbed sea water DY upwards in the form of a liquid column from a spray nozzle “YT spray nozzde” and making exhaust gas YO and absorbed sea water IVY added via line dad sea water VY] in gas-liquid contact with each other. in embodiment; The YT spray dag is a spray nozzle that jets sea water upwards in a liquid column. With cell the invention is not limited to this; Sea water can be jetted down in a shower.

VO and dessert; The exhaust gas YO and the absorbed seawater VY absorption seawater as gas-liquid come into contact with each other in an exhaust gas desulfurization absorbent 11 such that a reaction described in formula (I) takes place to make the absorbed seawater i VY absorbed Sulfur content as SOx content as 2 in exhaust gas (Vo hence Al) Sulfur content in exhaust gas Yo using absorbed seawater JY

0) SO2(g) + H20 — 1125030 C- HSO3- + H+ Yo and gas IY 112503 generated by gas-liquid contact of absorbed seawater is dissociated hydrogen ions Freeing hydrogen ions Auge pall De-sulfurization of Bayh water from the exhaust YO absorption of the amount of as ' in the absorbed sea water is 0 and thus the pH decreases (H+) for this reason water contains .06 large sulfur content in the absorbed sea water for sulfur content

Yo sea absorbent Ve sulfur content on a high concentration of sulfur content. In this case for example; The pH of sea water absorbing VE sulfur content is about ? TO 6. Seawater VE sulfur absorbent sulfur absorbent is stored in a stripping adsorber

A= EGS 11 on bottom of EGS adsorption 11. The evaporated seawater of the VE sulfur content stored on the bottom of EGS 11 adsorption is fed to the VY oxidation pool by means of ATS seawater discharge line Purified gas with YA Purified desulfurized is released in an exhaust 0 desulfurization absorber 11 into atmosphere via jee purified gas discharge passage PE

In addition to that; The Jad line is connected to seawater diluted to; 1 in the discharge line of the sea water absorbing the sulfur content L0, so that the sea water absorbing the sulfur content VE is mixed inside the discharge line of the sea water absorbing the sulfur content L with diluted sea water (VY) and distilled. When mixing the 0 sea water VE absorbent with dilute seawater (VY) and distilling it; it is possible to increase the pH of the VE absorbent seawater within the evaporating seawater discharge line and prevent gas 502 from diffusing again. In addition; It is possible to prevent the unpleasant odor from emitting by preventing 502 from spreading in the VF seawater discharge line and leaking.1 In addition, the VV seawater discharge line] can be equipped with a dilution basin Tamnada dilution/mixture dilutes and mixes slay VE seawater with dilute seawater 11b. Mixes slay VE seawater diluent seawater 11b in the dilution/mixing basin When mixing seawater absorbing sulfur content VE with dilute seawater (VV) and distilling it, it is possible to increase the pH of the seawater to 0. Release the absorbent of the VE sulfur content into the dilution/mixing basin; and prevent the 502 gas from diffusing again. add to that; It is possible to prevent unpleasant odors from escaping by preventing 502 from spreading into the dilution/mixing basin and leaking out. Oxidation sump 11 is fitted on the downstream side of the NY exhaust gas desulfurization absorber which is a sump incorporating a line 51 diluted seawater dadd acting as a supply means YO seawater diluted » ventilator 1 aeration device that operates as an air supply device; And a means of measuring the level of dissolved oxygen 7©. in embodiment; A diluted seawater dad line is being equipped to supply diluted seawater 11g to the oxidation pool VY however; The invention is not limited to this;

q —_ _ and the diluted seawater dag line can not be supplied od The diluted seawater dag line to 51 connects the diluted seawater supply line Ed Oxidation basin OY and the diluted seawater supply 11g To the sea water absorbing the sulfur content VE inside the oxidation basin AY 2 is equipped with a means of ventilation 1 ? inside the oxidation basin NY and supplying air ¢ YY to the sea water absorbing the sulfur content 6 1 in Embodiment 1 includes a z air bower for Ve oxidation supplying air FY, an air sia Yo diffuser tube (YY) and a nozzle p00771 for air oxidation 17 air It supplies air ¢ YY to sea water absorbing sulfur content 4 into the oxidation pool IY External air YY is fed into the oxidation pool 11 from the nozzle Yo The oxidation of air 775 is via the diffusion tube alg yo air blower for oxidation ve » so that A dissolution of oxygen occurs as in formula (1) below. A sulfur content in Ma & the sea absorbing sulfur content VE comes into contact with air TY in the oxidation pool VY to perform an ion oxidation reaction Bisulfite ion (11503-) and decarboxylation reaction decarboxylation reaction of the bicarbonate ion (-HCO3) bicarbonate jon as in formulas (11) to (7); So that the Baga YE is improved and the seawater absorbing AR sulfur content is changed the water in seawater absorbing the sulfur content Yo air oxidation 7 specifically; nozdes the number of nozzles .317 is not restricted to seawater quality improved

AY and can be suitably prepared according to the volume inside the oxidation tank (L0) 02(g) > 020 (IIT) HSO3- + 1/202— SO42- + H+ (Iv) HCO3- + H+— CO2(g) + H20 0

Vv) CO32- + 2H+— CO2(g) + H20

AR ANGIE This way; It is possible to increase the pH of the sea water absorbing the content of ; Chemical Oxygen Demand (COD) water can have a pH; Dissolved Oxygen Level” and 0017 TV corresponds to the enhanced quality sea level YO at which seawater discharge is allowed; It can be discharged. add to that; Even when gas is generated during the improvement of the water quality of the sulfur-containing seawater; 1 in the oxidation pool 70; the ye gas generated in the oxidation pool 71 can be diffused after achieving an environmental standard density of 502. The seawater is discharged with quality

VV] seawater discharge line by seawater discharge line 71 to sea of improved VY OY additionally; 7 Dissolved oxygen level measurement devices are equipped inside the oxidation tank. 04 set is equipped and measures the dissolved oxygen level in sea water absorbing sulfur content. Dissolved oxygen level measurement devices 77 Dissolved oxygen level measurement devices © on NY inside the oxidation pool 1 in the direction in which seawater absorbing sulfur content flows; dissolved oxygen analyzers al) JE oxygen analyzers can be used by way of transportable TY result Means of measuring the level of dissolved oxygen, or fixed ones sold in the market, a control curette to a means of measuring TY, measured by means of measuring the level of dissolved oxygen

YA device 00 in embodiment; The dissolved oxygen level can be obtained based on at least one of the number and temperature of the ¢ alkaline property; alkali sulfite density pH; and sulfite density A relationship is calculated between the level of dissolved oxygen and one VE of absorbent seawater for at least a sulfur content of pH; sulfite density; alkaline property; and the temperature of the absorbent sea water on the level of dissolved oxygen from the TA value in advance; The VE controller shall have a 0 sulfur content of at least one pH; sulfite density; alkaline property the temperature of the seawater absorbing the sulfur content;1 based on the relationship between the level of dissolved oxygen and at least one pH; sulfite density; alkaline property and the sulfur content absorbent seawater temperature calculated in advance. 4 is provided to the absorbent seawater TF by adjusting the amount of air PA in the embodiment; The Yo control device is based on a relationship between the length 1 of each air oxidation nozzle 77 with the VE ventilation device for the sulfur content produced in advance and the level of dissolved oxygen in the sea water absorbing the content of the 11 oxidation pool.

NE sulfur and the level of dissolved oxygen in 11 shows the figure? An example of the relationship between the length of the oxidation pool it is possible to adjust the oF as shown in the figure VE seawater absorbing sulfur content YO 31 from each aerator VE supplied to seawater absorbing seawater sulfur content TY Amount of air

-11- and the level of the VY oxidation basin using a relationship diagram showing the relationship between the length of the oxidation basin

NE dissolved oxygen in absorbing sea water of sulfur content to absorbing sea water of sulfur content PY air supply VY It is preferable that the means of ventilation, other than the case in which the Ula is carried out at intervals. in embodiment; Indicates supply at intervals of 4 from each of the VE nozzles in series to seawater FY sulfur content air supply 0 to TY sulfur seawater and indicates air is supplied oF oxidized Air keeping distances in FT from oxidation nozzles limited air 01 sulfur content absorbing seawater

AY The direction of the length of the oxidation basin In the supply of air When the level of dissolved oxygen in the water TY It is preferable that the aeration means the sulfur content 1; Less than or equal to a predetermined value. A preset value of 0 indicates an amount at which an adequate oxidation rate can be ensured. For example; Supply is executed when

V/V The dissolved oxygen level in absorbent seawater of sulfur content 1 4 is less than or equal to 1/3 of the saturation concentration. It should be noted that the predetermined value is not bound by the saturating concentration. To the top side of the TY basin, the preferred aerator 1? By supplying a large amount of air VO at the supply of air 11 towards the downstream side of the oxidation pool FY and decreasing the supply of air VY oxidation VY to the oxidation pool oohla dad that Le VE to the absorbent seawater of sulfur content YY dissolved in (-503) sulfite jon not consumed immediately for 602 aeration or oxidation of sulfite ion along with 14 sulfur content absorbing seawater flows VE sulfur content absorbing seawater plus Therefore, since the concentration of -503 is high; When a large amount of air (VE) of sulfur content (ald) is supplied from VY on the downstream side of the oxidation pool TY and the supply of air VY to the oxidation pool is reduced the view of the reaction time at which 503- dissolved in is oxidized Absorbent seawater of sulfur content -503 and the time period used for aeration of 002; It is possible to lower the concentration of VE Yo

AY inside the oxidation basin VE reliably absorbent sea water of sulfur content the shape is ? It is a typical graph showing an example of a relationship between the length of the oxidation pool yy and the level of dissolved oxygen. As shown in the figure, continuous to the oxidation pool YY the case in which air is supplied Jie 1; for sulfur content at intervals at point 11 within the oxidation basin TY air Jad via the VY oxidation basin a time value (VE) when the level of dissolved oxygen in sea water absorbing sulfur content © at intervals . VY inside the oxidation pool YY and adjusting its supply even when supplying air cor at predetermined intervals; thus changing 11 inside the oxidation pool YY in addition to that; even when supplying air required to make the concentration of 503 - dissolved in absorbent seawater of a content of 11. The length of the oxidation pool is less than or equal to a predetermined value; it is possible to adjust the length of the oxidation pool VE sulfur so that the length is equal to the 1 required for generating and discharging the absorbent seawater of sulfur content; 11

VE required to generate and discharge seawater absorbing sulfur content VY large for the length of the oxidation pool aa as previously by adjusting the depth of 11 oxidation pool JAI PY continuous to air dad by means of VE to adjust the seawater flow velocity The absorbent of VY sulfur content and the width of the oxidation pool flow velocity so that the flow velocity and VY supply are lower than a typical graph showing a relationship between the length of the oxidation pool Ble Figure 1 ov in a longitudinal direction 11 The length of the oxidation pool is of air. As shown in the figure

YY at air supply 001 is VY the amount of air supplied into the oxidation bath lea) and is the ratio of

VY evenly into five private spaces evenly divided in the direction of the length of the oxidation pool in this case; As in Example 1; The lengths of the private spaces are changed (1). See a comparative example (1). The five VY air quantity obtained by dividing the oxidation pool 0 supplied into the private spaces is adjusted. In particular; the length of a space is lengthened when supplying Air 37 to Moreover; FY is done and the space length is shortened when no air is supplied OY Oxidation bath so that the air content is large about 11 Adjust the amount of air supplied to the inside of the oxidation bath

AY and is small towards the downstream side of the oxidation pond OY upper side of the oxidation pond

VY in this way; It is possible to reduce the total amount of air supplied to the oxidation pool YO

YY when compared to a condition in which air 1 in Example # 071 Jl) aia as in Example 11 is supplied evenly and continuously to the private spaces within the oxidation pool a yy accordingly; 1. It is possible to effectively treat seawater of comparative content by adjusting the lengths of the special spaces; and the amount of air supplied to the wipers VE residual sulfur to a group of wipers. Subsequently; It is special VY when the oxidation basin is useless inside the oda basin When TY is installed the means of ventilation Led possible to reduce the condition in which and reduce the condition in which VY is reduced the amount of air supplied into the basin Oxidation OY Oxidation ©

AY Excess oxygen supply into the oxidation tank leading to YY water according to the embodiment; The amount of air is adjusted 11 Therefore; According to the oxidation basin by means of ventilation YU oxidation air from each nozzle for air oxidation VE sea absorbent of sulfur content and the lengths of the private spaces and the amount of air supplied to the private spaces when oF) is adjusted to a group of spaces using a relationship diagram showing Relationship Alia VY the oxidation pool 0 is produced in advance and the level of dissolved oxygen in the absorbent sea water VY between the length of the oxidation pool according to the embodiment to reduce the number of 11 means of sulfur content ?1. For that reason; Oxidation can

VY without enlarging the oxidation pool 11 installed inside the oxidation pool 1 aeration devices effectively aeration by carrying out the treatment of sea water absorbing sulfur content of 40; By decreasing the total amount of air YY the energy that will be used to supply the air Yo

FY from the aeration means VY is supplied inside the oxidation basin to which a 01 seawater pile is applied in this way; Gas desulphurization system can

YY shall, according to the embodiment, reduce the number of air oxidation nozzles 77 by means of ventilation VY oxidation OY the amount of air supplied into the oxidation bath Mea) reduce the VY installed inside the oxidation bath and reduce the energy that will be used to supply air 3 Thus, it is possible to effectively carry out 0 effluent 0 sulfur content absorbing seawater oxidation treatment on sulfur content absorbing seawater and perform water quality improvement treatment. According to the seawater exhaust gas desulphurization system10, to which is the oxidation basin supplied? It is possible to effectively treat seawater absorbing sulfur content; 1 vacuumed from the device inside the YY Jad tub the air in the shape of a dad by means of 11 exhaust gas desulphurization adsorption ©

AY.) in basin 1 by means of aeration TT Reducing the number of air oxidation nozzles 11 dsc a yee and performing water quality improvement treatment; Thus, it is possible to provide a reliable seawater exhaust gas desulphurization system. In addition to that; in embodiment; A seawater exhaust gas desulphurization system is described using seawater desulphurization in a seawater exhaust gas desulphurization absorber IVY seawater absorbent desulfurization system (JU) can be applied however; The invention is not limited to this. Ex. 11. Exhaust © slo Desulfurization aay from seawater exhaust gas on seawater waste gas desulphurization equipment from a plant of various industries; gas fie ale sea sulphur power plant large or medium size; boiler thermal power station electric such as ron foundry boiler for general industry; iron foundry electrical industry electricity de lial is large and the like. finery - refinery 0 and oxidation basin 11 in the embodiment; The SUA plus is independent of each other in the form of two separate troughs; the SUA 1 is connected to each other using the seawater discharge line 11 and the oxidation trough 11 to the SUA The absorbent of the sulfur content of l 1. However, the invention is not limited to this, and an absorbent can be formed by stripping in a tub as an integral body. Energy according to a second embodiment of the invention with reference to the drawings The seawater waste gas desulfurization system according to the first embodiment is used as the seawater waste gas desulfurization system to which the power generation system according to the embodiment is applied The same figures are assigned Reference to the same parties as according to the first embodiment; neglecting their description. The figure © is a schematic diagram illustrating the design of the power generation system according to embodiment 0 ? according to the second embodiment 0 of the invention. As shown in figure © exhaust-gas power generation system includes exhaust gas denitrification 14 o£ boiler 7 slo p steam turbine ale 40; dust collector gas desulfurization system; 4 dust collector denitration device to 11 above; Absorbent seawater indicates the lad sulfur content in the embodiment; As shown 01. The sea is an absorbent of sulfur content such as 502 in a seawater exhaust gas desulfurization system ele YO

Ns

EVA

E1 The boiler 1 sprays and burns £7 fuel supplied from a fuel tank “coal mill pad” or similar in conjunction with air 4; Preheat in an air VY air preheater ("J") preheater from the jue burner shown). The air 44 supplied from outside is fed into an EV air preheater via a “fd force draft fan” and heated. fuel £7 and air £4; Preheat in an air preheater SEY burner (not shown); The boiler BET fuel (LE) is burned in this way; The ov steam used to drive the steam turbine is generated 67 . Exhaust gas (0) generated by burning within the boiler 1; is fed to the exhaust gas denitrifier £8 additionally; Heat is exchanged between exhaust gas 01 and water OF 0 discharged from fF GES and exhaust gas 0 is used as a heat source to generate steam 0 5. The steam turbine 7; alse oF power generator using generated steam 0.0 thereafter; HIS £7 extracts the water OF condensed in the steam turbine EY returns the water to AD 41 again; circulates the water. Exhaust gas denitrified (0) vented from boiler Jab 41 denitrification device Exhaust Vo gas 4 4 and heat exchange between exhaust gas and air EA in air preheater 71 ;; then it is fed to the dust collector FO and thus the dust in the exhaust gas .01 is then removed; Exhaust gas ©1 with the exception of dust in the dust collector © inside the shal is desulfurized from exhaust gas 11 by means of a forced draft fan 5©. In this case; Exhaust gas (0) is supplied into an exhaust gas desulfurization absorber 11 after heat exchange in a heat exchanger 0© between the exhaust gas and gas YA (sil) being desulfurized in the 303 exhaust gas desulfurization absorber In addition, the exhaust gas 51 can be supplied directly to the exhaust gas desulfurization absorber 11 without heat exchange between the exhaust Sle and the gas (YA Sid) in the heat exchanger 57. In addition; Heat exchanger 07 includes a heat recovery device YO and a preheater reheater; A heating medium circulates between the extraction shall and the preheater. A heat extraction device is provided between the driven draft fan 00 and an exhaust gas desulphurization absorber 10; heat exchange between the heating medium and the exhaust gas (0 yr outlet from the boiler 16) the preheater is equipped on the downstream side of the desulfurization absorber Discharged from YA strip absorber and heat exchange between heating medium and purified gas 11 Exhaust YA GE for gas reheating 11 Exhaust gas sulfur

Ba, Seawater Exhaust Gas Desulfurization Equipment 01 The Seawater Exhaust Gas Desulfurization System 01 corresponds to the first embodiment described above. Accordingly; The seawater exhaust gas desulphurization system includes 0 seawater dag lines VY oxidation sump VY seawater exhaust gas desulphurization adsorption dad and FY lines seawater desulphurization desulphurization line Sulfur VY 11l

Nols Vel) diluent seawater supply lines diluted by executing the removal of 01 as described above; The seawater exhaust gas desulphurization system which 11 seawater has been sulfated from the sulfur content contained in the exhaust gas (0) uses seawater 0 by pump YY from sea 11 in addition; sea water is pumped YY pumped from the sea 47; Then part of the condenser seawater absorbed and heat exchanged in the condenser (YY) is fed through the YY line by the pump 01 le seawater exhaust to the desulphurization system from the TY seawater supply l11. In addition, the remainder of the diluted seawater 1b is fed to an upper side (slay©) via the diluted seawater supply line to ;1. The exhaust gas VY of the oxidation pool 0 as gas-liquid comes into contact with each other in the absorbed sea water exhaust gas desulfurization system 1” 201. The sulfur content of the exhaust gas IVY is diluted so that it absorbs water Absorbed sea 01 sea fed sulfur absorbent from the VE absorber sulfur absorbent seawater and then mixed with dilute seawater A1B and fed to VY side by exhaust gas desulphurization purified in a purified system desulfurization of 01 in addition; Exhaust gas changes 11. Upper oxidation sump 0

OY stack and is discharged out of the YA stack to the purified gas 01 sea water exhaust le

YJ purified gas discharge passage PEN

CVF according to the embodiment by supplying a portion of diluted seawater © 0 In addition; The power generation system is via a sea water supply line diluted to 5. With VY upstream side inside that oxidation pool; The invention is not limited to this; The diluted seawater fraction 11b may not be supplied to the upstream Yo

Not by supply line of diluted sea water 11 inside oxidation basin and after fF CES heat in 71 which was pumped from sea VY in addition; Sea water exchange

yy This is fed to the seawater exhaust gas desulphurization system 10; It is used to remove sulfur directly into 71 that was pumped from the sea 11 from the sea water. however; Seawater can be fed and used fF without heat exchange in the condenser 01 Seawater Exhaust Gas Desulfurization System For desulphurization of seawater. Seawater absorbing sulfur content VE is mixed with dilute seawater 11b in a dilution/mixing trough” and then fed to the oxidation trough .11 in the embodiment; Oxidation pool 11 includes Jad line diluted sea water od aeration device (oF) and dissolved oxygen level measuring device TY control device YA control device adjusts amount of air TV added to water The sea absorbing the sulfur content VE from each nozzle of the air oxidation 77 by the aeration medium 1 based on a relationship between the length 0 of the oxidation pool VY produced in advance and the level of dissolved oxygen in the sea water absorbing the sulfur content 4 from the measurement result measured in the measuring medium Dissolved oxygen level 37. Efficient VE sulfur content seawater treatment is performed by adjusting the lengths of the special spaces and the amount of air supplied to the special spaces when the oxidation pool 11 is divided into a group of spaces. Subsequently; It is possible to reduce the number of ventilators 1 installed within the Vo oxidation pool VY without enlarging the VY oxidation pool and to reduce the energy that will be used to supply air YY by reducing the total amount of air TY supplied into the Oxidation basin VY from aerator .31 in this way; The water quality is improved in seawater absorbing sulfur content AVE oxidation basin Y ) 0 and sea water of quality 317 Ailend is obtained. Sea water of quality COD 5 has a pH of 5; The level of dissolved oxygen” 11 produced in the oxidation basin (TY Zila) 0 via the VY line corresponds to a level at which sea water is allowed to drain and is discharged to the sea

AY from oxidation basin. VV seawater discharge line

VAL diluted seawater dag according to embodiment on line 50 additionally; Power generation system includes 1" and dilute seawater NY other than absorbed seawater VY supplies part of the seawater fv from the seawater supply line to 11. Power generation system 11 performs downstream side of the oxidation pond Yo

YY lad) to the side of the sea water estuary of quality 11 according to the embodiment by supplying part of the sea water dad sea water from the VAS line through the VY dilute sea water supply line inside the oxidation basin A

m -1 LY) in this way; Seawater of improved quality YY can also be diluted. as a result; The pH of the improved quality seawater, FY, is increased and the pH of the drained seawater is increased until it approximates the pH of the seawater, VY, so that approximately the effluent pH level (pH of 100 or greater) is achieved for the drained seawater. conjugation © The “COD” can be reduced and thus seawater can be discharged with improved quality YY has a pH CODE corresponding to the odie level Seawater discharge is allowed. in embodiment; A portion of the diluted seawater 11b is supplied to an estuary into the VY oxidation basin by means of the VAD diluted seawater supply line however; The invention is not limited to this; The diluted seawater portion 11b may not be supplied downstream into oxidation basin 11 by means of the dad Ys diluted seawater line AA as described above; According to the power generation system 0 © According to the embodiment; In the oxidation pool OY it is possible to effectively treat seawater absorbent for the sulfur content VE and reduce the total amount of air supplied into the oxidation pool VY by supplying air in the form FY J into the oxidation pool 11 while reducing the number of means Ventilation 1? installed inside the oxidation pool YY thus; 5. It is possible to reduce the energy used for supplying air 77 to seawater absorbing sulfur content 04 and attempting to reduce the operating costs of the VY oxidation pool and therefore; 500 power generation system can treat according to the embodiment of seriously and stable seawater adsorption of VE sulfur content and water quality improvement treatment procedure; Thus it is possible to provide a safe and reliable power generation system. add to that; For example; Depending on the embodiment, the ade yl seawater desulfurization system can be used to remove the sulfur content of the sulfur content absorbent solution generated when performing seawater desulfurization of sulfur oxide contained in the exhaust gas ie from factory of various industries »; Jie Electric Power Plant A large or medium-sized thermal power plant; a large boiler for the electrical industry or a boiler for a general industry; and the like. Yo FPL Sequence: dissolved oxygen level a va “b” oxidant pool length “c”. 803 Concentration [mmol/L] d Dissolved Oxygen Level [mmol/L]

Sa and “small g” Length of the oxidizing tank [m] “h” Concentration of 503 [interval supply] i” Dissolved 503 concentration [continuous supply] ‘z’ Dissolved oxygen level [top up] Intervals] AK "Dissolved Oxygen Level [Continuous Supply] 1 Comparative Example No. J 1 m" Example [Vor N' [Oxidation Pool Length:] 001 's' . [Average Total Air Intake :,

Claims (1)

1. The dilution protection elements include: Diluted seawater supply unit 07008100 basin An oxidation basin -1 dilution for diluted seawater supply (basin body) connected to the body of a seawater basin containing sulfur for sulfur content absorbing seawater To absorbent seawater from desulfurization by desulfurization absorber imploded from sulfur absorption device cu p< content stexhaust-gas ale gas © air to supply air basin body equipped inside the body of the basin air sUppPly air supply unit dissolved from a sulfur absorber for sulfur content absorbing seawater stexhaust-gas exhaust gas desulfurization absorber fitted inside the body of the tank dissolved oxygen level a means of measuring dissolved oxygen level in seawater dissolved oxygen level (basin body 0; sulfur for sulfur content absorbing seawater also includes a control designed for: oxidation basin oxidation measured by means of measuring dissolved oxygen level dissolved oxygen level; and measurement devic e and the level of dissolved oxygen, OXidation basin. Obtaining a relationship between the length of the oxidation basin, Vo, measured; and from sulfur to the sulfur content of absorbing seawater adjusting the air supply to absorbing seawater depending on the relationship. air supply unit saa where the medium is oO) according to the protection element oxidation basin Oxidation Bath - 7 - 0 Designed for: control device control and at least one dissolved oxygen level Measuring relationship between alkaline dissolved oxygen level and sulfite density pH 011; and the sulfur density of the absorbing seawater's sulfur content and the absorbing seawater temperature of the property and Ye —vy- PH; From pH J) the level of dissolved oxygen is obtained from one over the density of sulfite; alkaline property; and the temperature of sea water absorbing sulfur content depending on PH and at least one of the pH Gla on the calculated relationship between the oxygen level and the temperature of the water, the alkaline property p116a5; Alkalinity property ─ Density of sulfite © absorbing seawater for sulfur content. *- The oxidation basin according to protection element 1 or oF, where the air supply unit is designed to supply air to absorbing seawater for sulfur content intermittently. A to; Where 1 is done according to any of the protection elements from the oxidation basin; with absorbent sea water of a sulfur content of 5/1607 less than or equal to a predetermined value. #- The desulfurization system of ade gas seawater exhaust-gas includes: an absorber desulfurization desulfurization exhaust gas to make exhaust-gas ale and seawater in gas—liquid contact with each other until the exhaust-gas is purified by it; and oxidation basin according to any of the Claims 1 through ; Equipped with desulfurization desulfurization absorber downstream side Yo texhaust-gas exhaust gas for seawater supply to seawater supply line and seawater supply line texhaust-gas exhaust gas desulfurization absorber of sulfur content absorbing seawater Jay sulfur vo absorbing seawater 805015179 for sulfur content released from a tool Describe the absorption of the absorber by desulfurization of the exhaust-gas into the oxidation basin; and supply line Jad or sulfur discharge line from SS discharge line © .oxidation basin and absorbing seawater -71 power generation system « includes: boiler; and a steam turbine to generate steam using exhaust-gas ale gas erupted from the boiler as a heat source 7681501106 in order to move the power generator power alge using 0 steam generated; and the desulfurization system from alle gas seawater exhaust-gas ll according to protection element 0 condenser eas to extract and recycle water i.e. in the steam turbine; denitration 6 exhaust-gas for denitrification 060108009 from exhaust-gas £34 from the boiler; and a dust collector to remove dust in Exhaust Gas .exhaust-gas £19 A $7.) vA \ p eo K 3 $7 Ab YA ¥ ¢ ' La} FR 1 1 Ye AIL 1 T 1 T Sia 1 1 2 A 1 1 Ga Lata Aaa A A A A A A A | iY H { ll ved “ad l ṭṭṭ +4 & $ + i lo MEAL a y y d ᴀᴀᴀᴀᴀᴀᴀ ᴀ ᴀ ᴀ ᴀ ᴀᴀᴛᴇᴀ + 1 a + ++ + a for 1: mmm 8 gangs ogg v VA vos ty A J PESO So ee et out Mt cou Hadia nt ey Heh Cw None under poy sev LIEN = 1 NO IE EE POE EES A EY EE das ey 1 SE SRE A A L and ER EH EH EE ESA A H H E H E H E H E H E H E H E H H 223 8 i 5 P 1 1 mm— L L { Pod { Wl - wey : { vo 1 RAE 1 { AE ved cap sod Sod vy ho A D TT Ty ie “cm the 2% § \ . I do not _— ¢ \ _ tr) 14 SS + 33 1 b in the form ? — \ Aj ne?* : M ted pw: Rm px Eg Tsaf Lehi ee por ne vw go ew mn 8 Bh 4 3 0 LC — 1 5 1 : wow } Bh { i } BN PRR. PUR. NOR ADI + H ———— T SIG W AA TA TA A AT L C 3 SC —— = i ST HA 1 M 4 SO. SUR. a meen a3 ST ST Sr now 3 ; 3 1 a “g 2 sia tis” a 1 <5 yen _ ye 3 about Adam 0 0 + “l dl &“ 8 a, &% % 3 2 May l < 0 i 1 1 ? v 3 3 1 1 t B 3 ¥ 1 1 3 3 + + : 1 3 3 ¥ + H : 3 3 + + H t 3 3 0 + i t 7 1 0 H H 3 ] Coy Loy Loy boyy EE EEE vi O TE a c 2 1 1 * 2 H i 1 1 bah : V+ b 1 m l i } Conon at tse i ahle a © + » 1 3 ¥ l 1 1 i} i ' « 0!! !a : : 1 1 1 1 + 1: ES ¥ 3 ¥ 3 + + 1 3 1 + 1 ¥ 3 2 + 1 t 2 3 0 i : 1 0 3 ¢ oy LY Loy Loy oy H rm 0 PELE H eee H JR. JL 2 3 1 H : ¢ : \ RRP 1 h SO ES: h 00 + sql 1 i' i i k + l * 4 i v I} 2 l 1 i A } 1 } 4 « ' 1 , bi of € i y ' & 1 ES ( + Y count 8 in RN : yo » A 0 a x A 0 \ ® { of Plaid PPT » 1 1 CO + : t ' , « { 1 1: « 3 { 1 +: « Ht 0 0 1 1 0 + 0 « & 0 i 1 It + i 4 a 1 i : 0 1 1 i 1 i i i 1 0 + 4 1 1 1 7 + 1 1 ¥ t 3 + 1 y ) t 3 1 1 I t , 0 1 1 0 A 1 , * 3 Y t ~~ RICCI pd 2 1 r : Ve tr * ba l pen I hE Sy or Loh SE —— Faqil (m): i + t t » #4 ¢ , Beja £2 2 8 nN < 12 or Se £9 . 0 + No 5 2 If so, God — 7 YD: Mo servants ha >< A ass naimi a me . Pe fod ANS ayer RE ay p / wg oe 4 b 1 y: a i pd 2 — b 1 b i 213 UL lemya 1 hr um A) £8 ya 3 1 Ba Malac i we a . oo z na matt khem ayy £4 1 = ? A 1 84 VE Wael] a bod FEAT ps od = Yi NOR HO EE EEE EE Wop od SERRE EAE TE A SEER In WHE AY = 3 A bo = i ro $y 0 Figure ; ) EVA The validity period of this patent is twenty years from the date of filing the application, provided that the annual financial fee is paid for the patent and that it is not invalid or forfeited for violating any of the provisions of the patent system, layout designs of integrated circuits, plant varieties, and industrial designs, or its executive regulations issued by King Abdulaziz City for Science and Technology; Saudi Patent Office P.O. Box TAT Riyadh 57??11 ¢ Kingdom of Saudi Arabia Email: Patents @kacst.edu.sa