阅读说明：本技术 船舶烟气处理装置 (Ship flue gas treatment device ) 是由 刘勇 胡小吐 钟璐 杨颖欣 胡静龄 杨森林 于 2019-11-05 设计创作，主要内容包括：本发明公开一种船舶烟气处理装置,包括罐体、臭氧供给装置、海水供给装置和碱液供给装置；罐体的内部自下而上依次设置有初级氧化室、初级吸收室、次级氧化室和次级吸收室,初级氧化室与船舶的烟气出气管连接,初级氧化室与初级吸收室连接,初级吸收室与次级氧化室通过连接,次级氧化室与次级吸收室连接；臭氧供给装置与初级氧化室和次级氧化室连接；海水供给装置与初级吸收室连接；碱液供给装置与次级吸收室连接。经过两次的氧化吸收,可有效的保证了对硫氧化物和氮氧化物的氧化和吸收,避免由于氧化效率或吸收效率低时所带来的部分硫氧化物和氮氧化物未被吸收处理而被直接排出,进一步的保证了对船舶烟气的高效处理。(The invention discloses a ship flue gas treatment device, which comprises a tank body, an ozone supply device, a seawater supply device and an alkali liquor supply device, wherein the tank body is provided with a water inlet and a water outlet; a primary oxidation chamber, a primary absorption chamber, a secondary oxidation chamber and a secondary absorption chamber are sequentially arranged in the tank body from bottom to top, the primary oxidation chamber is connected with a flue gas outlet pipe of a ship, the primary oxidation chamber is connected with the primary absorption chamber, the primary absorption chamber is connected with the secondary oxidation chamber, and the secondary oxidation chamber is connected with the secondary absorption chamber; the ozone supply device is connected with the primary oxidation chamber and the secondary oxidation chamber; the seawater supply device is connected with the primary absorption chamber; the alkali liquor supply device is connected with the secondary absorption chamber. The oxidation and absorption of the sulfur oxides and the nitrogen oxides can be effectively ensured through two times of oxidation and absorption, the direct discharge of partial sulfur oxides and nitrogen oxides which are not absorbed and treated when the oxidation efficiency or the absorption efficiency is low is avoided, and the high-efficiency treatment of the ship flue gas is further ensured.)

1. A ship flue gas treatment device is characterized by comprising a tank body, an ozone supply device, a seawater supply device and an alkali liquor supply device; a primary oxidation chamber, a primary absorption chamber, a secondary oxidation chamber and a secondary absorption chamber are sequentially arranged in the tank body from bottom to top, the primary oxidation chamber is connected with a flue gas outlet pipe of a ship, the primary oxidation chamber is connected with the primary absorption chamber through a first pipeline, the primary absorption chamber is connected with the secondary oxidation chamber through a second pipeline, and the secondary oxidation chamber is connected with the secondary absorption chamber through a third pipeline; the ozone supply device is connected with the primary oxidation chamber and the secondary oxidation chamber; a seawater supply device is connected with the primary absorption chamber; the alkali liquor supply device is connected with the secondary absorption chamber.

2. The ship flue gas treatment device according to claim 1, wherein the ozone supply device comprises an ozone generator and a uniform distribution pipe, the uniform distribution pipe is respectively arranged in the primary oxidation chamber and the secondary oxidation chamber, and the uniform distribution pipe is connected with the ozone generator through a pipeline.

3. The marine flue gas treatment plant of claim 1, wherein the seawater supply comprises a first transfer pump connected at one end to the ballast tank of the vessel and at the other end to the primary absorption chamber.

4. The ship flue gas treatment device according to claim 3, wherein a plurality of first spraying pipes are arranged inside the primary absorption chamber, and liquid inlets of the first spraying pipes are connected with the first delivery pump.

5. The marine flue gas treatment device according to claim 1, wherein the lye supply device comprises a lye storage tank and a second delivery pump, one end of the second delivery pump is connected with the lye storage tank, and the other end is connected with the secondary absorption chamber.

6. The ship flue gas treatment device according to claim 5, wherein a plurality of second spraying pipes are arranged in the secondary absorption chamber, and liquid inlets of the second spraying pipes are connected with the second delivery pump.

7. The marine flue gas treatment device according to claim 5, wherein the lye supply device further comprises a lye circulation tank and a third delivery pump, the lye circulation tank is disposed between the second delivery pump and the secondary absorption chamber, the first water inlet of the lye circulation tank is connected with the second delivery pump, and the third delivery pump is connected with the lye circulation tank and the secondary absorption chamber respectively.

8. The marine flue gas treatment plant of claim 7, wherein the second inlet of the lye circulation tank is connected to the second outlet of the secondary absorption chamber.

9. The ship flue gas treatment device according to claim 7, wherein a pH value detection device is arranged in the alkali liquor circulation tank, and the pH value detection device is connected with a control end of the second delivery pump.

10. The marine flue gas treatment device of claim 1, further comprising a dust removal device, wherein an air inlet of the dust removal device is connected with the flue gas outlet pipe, and an air outlet of the dust removal device is connected with the primary oxidation chamber.

Technical Field

The invention relates to the technical field of ship flue gas treatment, in particular to a ship flue gas treatment device.

Background

At present, a plurality of mature flue gas treatment technologies exist in the relevant fields of coal-fired power plants, metallurgy industry, chemical industry and the like on land, and the treatment technology for ship flue gas is still in a starting stage. Most ships use high power diesel engines as the main power plant, and they generally use heavy oil residues as fuel. Although diesel engines have the advantages of high thermal efficiency, good economy and the like, the exhaust gas emitted by the diesel engines contains Nitrogen Oxides (NO)_x) Sulfur Oxide (SO)_x) And various harmful pollutants such as Particulate Matter (PM) cause serious harm to the atmospheric environment and human health.

In the existing ship flue gas treatment technology, the tail gas treatment process of ships is complex, such as: NO for ship smoke emission_XBy catalytic reduction (lean NO)_XCatalytic reduction, selective catalytic reduction of NO_X、NO_XAdsorption reduction catalysis), etc.; SO aiming at ship smoke emission₂The limestone-gypsum method is adopted. The defects of large quantity and large size of equipment, high construction and operation cost and the like in the tail gas treatment process of the ship due to the fact that a large quantity of catalytic reducing agents and desulfurizing agents are required.

Disclosure of Invention

The embodiment of the invention aims to: provided is a ship flue gas treatment device which consumes less energy and can efficiently treat ship flue gas.

In order to achieve the purpose, the invention adopts the following technical scheme:

the ship flue gas treatment device comprises a tank body, an ozone supply device, a seawater supply device and an alkali liquor supply device; a primary oxidation chamber, a primary absorption chamber, a secondary oxidation chamber and a secondary absorption chamber are sequentially arranged in the tank body from bottom to top, the primary oxidation chamber is connected with a flue gas outlet pipe of a ship, the primary oxidation chamber is connected with the primary absorption chamber through a first pipeline, the primary absorption chamber is connected with the secondary oxidation chamber through a second pipeline, and the secondary oxidation chamber is connected with the secondary absorption chamber through a third pipeline;

the ozone supply device is connected with the primary oxidation chamber and the secondary oxidation chamber; a seawater supply device is connected with the primary absorption chamber; the alkali liquor supply device is connected with the secondary absorption chamber.

As a preferable technical solution of the present invention, the ozone supply device includes an ozone generator and a uniform distribution pipe, the uniform distribution pipe is respectively disposed in the primary oxidation chamber and the secondary oxidation chamber, and the uniform distribution pipe is connected to the ozone generator through a pipeline.

In a preferred embodiment of the present invention, the seawater supply device includes a first transfer pump, one end of which is connected to the ballast tank of the ship, and the other end of which is connected to the primary absorption chamber.

As a preferable technical solution of the present invention, a plurality of first spraying pipes are arranged inside the primary absorption chamber, and liquid inlets of the first spraying pipes are connected to the first delivery pump.

As a preferable technical solution of the present invention, the alkali liquor supply device includes an alkali liquor storage tank and a second delivery pump, one end of the second delivery pump is connected to the alkali liquor storage tank, and the other end is connected to the secondary absorption chamber.

As a preferable technical scheme of the present invention, a plurality of second spraying pipes are arranged inside the secondary absorption chamber, and liquid inlets of the second spraying pipes are connected with the second delivery pump.

As a preferable technical solution of the present invention, the alkali liquor supply device further includes an alkali liquor circulation tank and a third delivery pump, the alkali liquor circulation tank is disposed between the second delivery pump and the secondary absorption chamber, a first water inlet of the alkali liquor circulation tank is connected to the second delivery pump, and the third delivery pump is respectively connected to the alkali liquor circulation tank and the secondary absorption chamber.

As a preferable technical scheme of the invention, the second water inlet of the lye circulating tank is connected with the second flow outlet of the secondary absorption chamber.

As a preferable technical scheme of the present invention, a ph value detection device is disposed in the alkali liquor circulation tank, and the ph value detection device is connected to the control end of the second delivery pump.

As a preferable technical scheme, the device further comprises a dust removal device, wherein an air inlet of the dust removal device is connected with the flue gas outlet pipe, and an air outlet of the dust removal device is connected with the primary oxidation chamber.

The invention has the beneficial effects that: the ozone is produced by the ozone supply device, so that a large amount of absorbent or reactant is not required to be carried, and the dependence on other substances and the energy consumption are reduced; the ship flue gas passes through the primary absorption chamber, and high-valence oxysulfide and nitric oxide oxidized by ozone in the flue gas react with alkaline seawater to produce salt reactants, so that most of the high-valence oxysulfide and nitric oxide are absorbed and treated; and then the residual low-valence sulfur oxides and nitrogen oxides are further oxidized into high-valence products through the secondary oxidation chamber, and then the residual low-valence sulfur oxides and nitrogen oxides are absorbed through alkalinity in the secondary absorption chamber, so that the multiple oxidation absorption treatment of the sulfur oxides and nitrogen oxides in the ship flue gas can be realized, and the sulfur oxides and nitrogen oxides in the ship flue gas are effectively prevented from being discharged into the air. And through twice oxidation absorption, the oxidation and absorption of the oxysulfide and the nitric oxide can be effectively ensured, the direct discharge of partial oxysulfide and nitric oxide which are not absorbed and treated when the oxidation efficiency or the absorption efficiency is low is avoided, and the high-efficiency treatment of the ship flue gas is further ensured.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a schematic structural diagram of a ship flue gas treatment device according to an embodiment of the invention.

In the figure:

101. a primary oxidation chamber; 102. a primary absorption chamber; 103. a secondary oxidation chamber; 104. a secondary absorption chamber; 105. a first shower pipe; 106. a second shower pipe; 107. a first conduit; 108. a second pipeline; 109. a third pipeline; 110. a first outflow port; 111. a second outlet; 2. an ozone supply device; 201. an ozone generator; 202. uniformly distributing pipes; 3. a seawater supply device; 301. a first delivery pump; 4. an alkali liquor supply device; 401. an alkali liquor storage tank; 402. a second delivery pump; 403. an alkali liquor circulation tank; 404. a third delivery pump; 5. a dust removal device; 6. and a flue gas outlet pipe.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, in the embodiment, the ship flue gas treatment device according to the present invention includes a tank, an ozone supply device 2, a seawater supply device 3, and an alkali liquor supply device 4; a primary oxidation chamber 101, a primary absorption chamber 102, a secondary oxidation chamber 103 and a secondary absorption chamber 104 are sequentially arranged in the tank body from bottom to top, the primary oxidation chamber 101 is connected with a flue gas outlet pipe 6 of a ship, the primary oxidation chamber 101 is connected with the primary absorption chamber 102 through a first pipeline 107, the primary absorption chamber 102 is connected with the secondary oxidation chamber 103 through a second pipeline 108, and the secondary oxidation chamber 103 is connected with the secondary absorption chamber 104 through a third pipeline 109; the ozone supply device 2 is connected with the primary oxidation chamber 101 and the secondary oxidation chamber 103, and is used for supplying ozone to the primary oxidation chamber 101 and the secondary oxidation chamber 103; the seawater supply device 3 is connected with the primary absorption chamber 102 and is used for supplying alkaline seawater to the primary absorption chamber 102; the lye supply means 4 are connected to the secondary absorption chamber 104 for supplying lye to the secondary absorption chamber 104.

By arranging a tank body consisting of a primary oxidation chamber 101, a primary absorption chamber 102, a secondary oxidation chamber 103 and a secondary absorption chamber 104 and introducing ozone into the primary oxidation chamber 101 and the secondary oxidation chamber 103 by using an ozone supply device 2, low-valence sulfur oxides and nitrogen oxides in the flue gas are oxidized into high-valence products and then react with alkaline seawater in the primary absorption chamber 102 and alkaline liquid in the secondary absorption chamber 104 to be absorbed, so that pollutants in the flue gas of the ship are absorbed and removed.

The ozone is produced by the ozone supply device 2, so that a large amount of absorbent or reactant does not need to be carried, and the dependence on other substances and the energy consumption are reduced; the ship flue gas passes through the primary absorption chamber 102, and high-valence oxysulfide and nitric oxide oxidized by ozone in the flue gas react with alkaline seawater to produce salt reactants, so that most of the high-valence oxysulfide and nitric oxide are absorbed and treated; then the residual low-valence sulfur oxides and nitrogen oxides are further oxidized into high-valence products through the secondary oxidation chamber 103, and then the residual low-valence sulfur oxides and nitrogen oxides are absorbed in the secondary absorption chamber 104 through alkalinity, so that the multiple oxidation absorption treatment of the sulfur oxides and nitrogen oxides in the ship flue gas can be realized, and the sulfur oxides and nitrogen oxides in the ship flue gas are effectively prevented from being discharged into the air. And through twice oxidation absorption, the oxidation and absorption of the oxysulfide and the nitric oxide can be effectively ensured, the direct discharge of partial oxysulfide and nitric oxide which are not absorbed and treated when the oxidation efficiency or the absorption efficiency is low is avoided, and the high-efficiency treatment of the ship flue gas is further ensured.

Secondly, the oxidized high-valence oxysulfide and nitric oxide are absorbed by the alkaline seawater, and most of oxysulfide and nitric oxide in the ship flue gas can be effectively removed. Then, the primarily treated ship flue gas is oxidized again, so that residual low-valence sulfur oxides and residual nitrogen oxides can be oxidized into high-valence sulfur oxides and residual nitrogen oxides, and then the high-valence sulfur oxides and the residual nitrogen oxides are efficiently and comprehensively absorbed by using alkali liquor, so that the removal of the sulfur oxides and the nitrogen oxides in the ship flue gas can be effectively realized. And the alkaline seawater used in the ship flue gas treatment can be directly extracted from the sea without being supplemented along with the ship, thereby avoiding the occurrence of the condition of carrying a large amount of absorbent in the ship flue gas treatment and effectively reducing the operation cost of the treatment device.

Oxidation of lower sulfur oxides and nitrogen oxides to higher sulfur oxides and nitrogen oxides as described in the above examples, e.g. oxidation of Nitric Oxide (NO) to nitrogen dioxide (NO)₂) Sulfur dioxide (SO)₂) By oxidation to sulfur trioxide (SO)₃) Oxidized nitrogen dioxide (NO)₂) And sulfur trioxide (SO)₃) Can directly react with alkaline sea water and alkali liquor to produce salt chemicals.

In the embodiment of the present invention, the ozone supply device 2 includes an ozone generator 201 and a uniform distribution pipe 202, the uniform distribution pipe 202 is respectively disposed in the primary oxidation chamber 101 and the secondary oxidation chamber 103, and the uniform distribution pipe 202 is connected to the ozone generator 201 through a pipeline.

By arranging the ozone generator 201 on the ship, the ozone generator 201 can be used for supplying ozone into the primary oxidation chamber 101 and the secondary oxidation chamber 103, and the ozone generator 201 can produce ozone through high-voltage discharge, ultraviolet irradiation or electrolysis, so that raw materials are not required to be supplied additionally, only a certain amount of electric energy needs to be consumed, and the ship can be prevented from carrying a large amount of compounds for producing ozone. The uniform distribution pipes 202 are arranged in the primary oxidation chamber 101 and the secondary oxidation chamber 103, ozone can be conveyed to the inner space of the primary oxidation chamber 101 and the inner space of the secondary oxidation chamber 103 in a uniform distribution mode, the contact surface of the ship flue gas and the ozone is effectively increased, the ozone is uniformly distributed in the ship flue gas, the efficiency of oxidizing low-valence sulfur oxides and nitrogen oxides in the ship flue gas into high-valence products is improved, and the treatment efficiency of the ship flue gas is ensured.

In the embodiment of the present invention, the seawater supply device 3 includes a first transfer pump 301, and one end of the first transfer pump 301 is connected to the ballast tank of the ship and the other end is connected to the primary absorption chamber 102, for pumping the alkaline seawater into the primary absorption chamber 102. Sea water is directly extracted from a ballast tank of a ship by directly utilizing a first delivery pump 301 and is delivered into a primary absorption chamber 102 to absorb sulfur oxides and nitrogen oxides in ship flue gas after primary ozone oxidation. Firstly, the seawater is directly extracted from the ballast tank of the ship, so that the influence of sea waves on the operation of the first transfer pump 301 when the seawater is extracted from the sea surface can be avoided, and the influence of suspended matters in the seawater on the normal operation of the first transfer pump 301 can be avoided.

In other embodiments, the seawater may be extracted from other places, such as directly from the sea or by building a seawater storage room.

Further, a plurality of first spraying pipes 105 are arranged inside the primary absorption chamber 102, and liquid inlets of the first spraying pipes 105 are connected with the first conveying pump 301. By arranging the first spray pipe 105 in the primary absorption chamber 102, alkaline seawater can be sprayed in the primary absorption chamber 102, so that the alkaline seawater is dispersed in the primary absorption chamber 102 in an atomized manner, the contact area with the ship flue gas is increased, and the absorption efficiency of the alkaline seawater on high-valence sulfur oxides and nitrogen oxides in the ship flue gas is ensured.

In the embodiment of the present invention, the alkali liquor supply device 4 comprises an alkali liquor storage tank 401 and a second delivery pump 402, wherein one end of the second delivery pump 402 is connected to the alkali liquor storage tank 401, and the other end is connected to the secondary absorption chamber 104, and is used for pumping the alkali liquor into the secondary absorption chamber 104. By pumping alkali liquor into the secondary absorption chamber 104, the strong absorption of residual oxysulfide and nitric oxide in the ship flue gas after primary treatment can be realized, and the oxysulfide and nitric oxide in the ship flue gas can be effectively prevented from being discharged into the atmosphere.

Further, a plurality of second spray pipes 106 are arranged inside the secondary absorption chamber 104, and liquid inlets of the second spray pipes 106 are connected with a second delivery pump 402. Through set up second shower 106 in secondary absorption chamber 104, can spray alkali lye in secondary absorption chamber 104, make alkali lye be vaporific scattering in secondary absorption chamber 104, increase the area of contact with boats and ships flue gas, guarantee the absorption efficiency of alkali lye to the high valence oxysulfide and the nitrogen oxide in the boats and ships flue gas.

In a preferred embodiment of the present invention, the lye supply device 4 further comprises a lye circulation tank 403 and a third delivery pump 404, the lye circulation tank 403 is arranged between the second delivery pump 402 and the secondary absorption chamber 104, the first water inlet of the lye circulation tank 403 is connected with the second delivery pump 402, the third delivery pump 404 is connected with the lye circulation tank 403 and the secondary absorption chamber 104, respectively, and the second water inlet of the lye circulation tank 403 is connected with the second outlet 111 of the secondary absorption chamber 104.

The lye circulating tank 403 is arranged, lye is firstly injected into the lye circulating tank 403 for buffering through the lye storage tank 401, and then is conveyed into the secondary absorption chamber 104 through the third conveying pump 404. Then, the alkali liquor which is sprayed into the secondary absorption chamber 104 and absorbs part of the sulfur oxides and the nitrogen oxides is sent to the alkali liquor circulation tank 403 through the second outlet 111 arranged on the secondary absorption chamber 104, mixed with the alkali liquor in the alkali liquor circulation tank 403 to adjust the pH value, and then sent back to the secondary absorption chamber 104 again to absorb the sulfur oxides and the nitrogen oxides, so that the utilization of the alkali liquor can be ensured, and the waste of the alkali liquor can be avoided. Secondly, the alkali liquor with higher concentration can be stored in the alkali liquor storage tank 401, then the alkali liquor is conveyed to the alkali liquor circulating tank 403 to be mixed with the used alkali liquor, the pH value of the alkali liquor is adjusted, the absorption efficiency of the alkali liquor on sulfur oxides and nitrogen oxides is ensured under a better value, and the high utilization efficiency of the alkali liquor is realized.

Specifically, a ph value detection device may be disposed in the lye circulation tank 403, and the ph value detection device is connected to the control end of the second delivery pump 402. By adjusting the input of new lye according to the lye circulation tank 403, the waste of lye is reduced.

In the embodiment of the present invention, a first outflow port 110 is provided corresponding to the primary absorption chamber 102, and the first outflow port 110 is communicated to the outside of the ship through a pipeline for directly discharging the seawater absorbed and treated in the ship flue gas into the seawater.

In the embodiment of the invention, the device also comprises a dust removal device 5, wherein the air inlet of the dust removal device 5 is connected with the flue gas outlet pipe 6, and the air outlet of the dust removal device 5 is connected with the primary oxidation chamber 101. Through setting up dust collector 5, can be arranged in filtering the particle pollutant who carries in the boats and ships flue gas and get rid of, avoid the particulate matter to deposit the treatment effeciency of influence to the boats and ships flue gas in each cavity of the jar internal.

In the embodiment of the present invention, the lye refers to an aqueous solution containing one or more alkaline compounds selected from sodium hydroxide, sodium carbonate, sodium bicarbonate, magnesium hydroxide and magnesium carbonate.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.