WO2018025315A1

WO2018025315A1 - Evaluation testing apparatus and evaluation testing system

Info

Publication number: WO2018025315A1
Application number: PCT/JP2016/072558
Authority: WO
Inventors: 山本　泰三; 常孝安ヵ川; 晃二深田; 俊明三木
Original assignee: 株式会社エコ・サポート
Priority date: 2016-08-01
Filing date: 2016-08-01
Publication date: 2018-02-08
Also published as: JPWO2018025315A1; JP6446160B2

Abstract

This evaluation testing apparatus is for empirically evaluating a gas turbine combined cycle power generation system provided with a denitrification device that removes NOx from an exhaust gas discharged from a gas turbine to the atmosphere, and provided with: a test exhaust gas supply means for continuously supplying a test exhaust gas having a property identical to that of the exhaust gas; a test denitrification catalyst for denitrifying the test exhaust gas from the test exhaust gas supply means, the test denitrification catalyst having a honeycomb structure and being formed from a part of a denitrification catalyst usable for the denitrification device; a reducing agent charging means for charging a reducing agent, the equivalence ratio of which with respect to NOx in the test exhaust gas is 1.0 or higher, into the test exhaust gas supplied from the test exhaust gas supply means to the test denitrification catalyst; a latent heat recovery means that has a latent heat recovery heat exchanger for recovering latent heat from the steam of the test exhaust gas and that is arranged downstream of the test denitrification catalyst; and an NOx concentration measurement means for at least measuring the NOx concentration in the test exhaust gas.

Description

Evaluation test apparatus and evaluation test system

This disclosure relates to an evaluation test apparatus and an evaluation test system.

As a technique related to a conventional evaluation test apparatus, for example, an apparatus described in Patent Document 1 is known. In the apparatus described in Patent Document 1, a gas having the same component as exhaust gas from a boiler or the like is produced. The produced gas is heated to substantially the same temperature as that of a boiler or the like, and then mixed with ammonia gas as a reducing agent. Then, the mixed gas is brought into contact with a test denitration catalyst to perform a denitration test.

Japanese Patent No. 543217

By the way, from the 19th century to the latter half of the 20th century, power generation was generally performed by rotating a steam turbine (hereinafter referred to as “ST”) with steam obtained by burning fuel such as coal or oil. . The power generation efficiency can be increased by the steam temperature and the steam pressure determined by the steam temperature. At present, the steam temperature exceeds 600 ° C., and the power generation efficiency is improved to a maximum of nearly 40% (higher heating value standard).

The exhaust gas after combustion contains many pollutants. For this reason, pollutants in the exhaust gas are removed by the smoke treatment device, and the exhaust gas is exhausted from the chimney over a wide area, thereby mitigating the influence on the surrounding environment. As typical flue gas treatment, removal of NOx (nitrogen oxide) in exhaust gas by denitration equipment, soot treatment by electric dust collector, etc., and sulfur in exhaust gas generated by combustion of sulfur (S content) contained in fuel There is removal of oxide (SOx).

A gas turbine (hereinafter referred to as “GT”) extracts power with the same principle and structure as an airplane jet engine. GT is small and can generate high temperature gas and take out a large output. GT has high performance stability and reliability.

The gas turbine combined cycle power generation system (hereinafter referred to as “GTCC”) is a system that uses a combination of GT and ST, and has a feature that power generation efficiency is higher than ST. In GTCC, high temperature combustion gas is generated mainly using natural gas as fuel, the generated combustion gas is supplied to GT, and the GT is rotated to extract power and generate electric power. The temperature of the combustion gas at the GT inlet was increased to about 1600 ° C. by improving the material of the GT blade or the cooling method. Moreover, in GTCC, since the exhaust gas of GT is as high as about 600 ° C., steam is generated by the exhaust heat recovery boiler using the exhaust gas of GT. The generated steam is supplied to the ST, and the ST is rotated to extract power and generate electric power. Since power is generated in GT and ST, the total power generation efficiency is 54% (higher heating value standard), which is a high efficiency. Therefore, GTCC has been widely spread worldwide since the 1980s.

Since GTCC uses clean natural gas as fuel, SOx is not included in air pollutants in exhaust gas. Further, in GTCC, air pollutants in exhaust gas do not contain suspended particulate matter (or PM2.5 therein). In the exhaust gas of GTCC, if NOx produced by the reaction between nitrogen in the atmosphere and high-temperature combustion gas is removed, air pollutants are eliminated. Therefore, there is a high possibility that the chimney can be eliminated.

Regarding NOx countermeasures, a NOx removal system was installed to reduce the NOx concentration of exhaust gas to 4-5 ppm (oxygen concentration: 16%) or less and to remove NOx by 90% (wt%) or more. As a result, the NOx concentration and the emission amount are sufficiently reduced, and the height of the chimney can be made lower than before. Thereafter, in GTCC, the NOx concentration of exhaust gas has become the de facto standard.

The Japanese government reviewed the basic energy policy and made the following directions.
・ Dependence on nuclear denuclearization ・ Enhancement of renewable energy ・ Enhancement of GTCC with LNG (liquefied natural gas) On the other hand, global warming countermeasures are the most important international issues. The “Paris Agreement” was finalized at COP21 in December 2015. Moving forward, ratification is expected and the Paris Agreement will be ratified relatively early.

GTCC satisfies 3E (Energy Security: Power Supply Stability, Ecology: Environmental Conservation, Economy) and 2S (Safety: Sustainability) as power generation energy. The superiority of GTCC will become clearer, and it is expected that it will spread in the future.

Here, in recent years, development of an advanced gas turbine combined cycle power generation system (hereinafter referred to as “advanced GTCC”), which is a GTCC having the following features, has been under development.
a) Sophistication of denitration performance of denitration equipment.
b) Recovery of latent heat of vapor in the exhaust gas released into the atmosphere.

Advanced GTCC can be realized with established technology. In January 2014, Eco Support Co., Ltd. announced the “Planned Environmental Considerations for the Yumeshima Natural Gas Power Plant Construction Project” based on the Environmental Impact Assessment Law. The opinion of the Minister of Industry has been released. This is the first project following the revision of the Environmental Impact Assessment Law. The superiority of the advanced GTCC is recognized by the power generation company or the parties such as GTCC manufacturers.

In actual implementation of advanced GTCC, assuming an actual machine, the absolute amount required in terms of funds is considerably large. In addition, it may be necessary to consider whether it is economical, technically compatible, or can be operated for a long period of time. In order to disseminate advanced GTCC in Japan and overseas, it is important to be able to guarantee performance for a long period of time by measuring and monitoring the properties of exhaust gas and performing appropriate maintenance. From the above circumstances, there is a demand for an evaluation test apparatus that can perform proof evaluation with high accuracy on a reduced scale of about 1 / 10,000 to tens of thousands of real GTCC, for example.

Therefore, an object of the present disclosure is to provide an evaluation test apparatus and an evaluation test system capable of accurately performing demonstration evaluation of an advanced GTCC on a reduced scale.

An evaluation test apparatus according to an embodiment of the present disclosure is an evaluation test apparatus for demonstrative evaluation of a gas turbine combined cycle power generation system including a denitration apparatus that removes NOx in exhaust gas exhausted from a gas turbine to the atmosphere. A test exhaust gas supply means for continuously supplying a test exhaust gas having the same characteristics as the exhaust gas, and a part of a denitration catalyst having a honeycomb structure and usable for a denitration apparatus, is supplied from the test exhaust gas supply means. A test denitration catalyst for denitrating the test exhaust gas and a test agent exhaust gas supplied from the test exhaust gas supply means to the test denitration catalyst, wherein the equivalent ratio of the test exhaust gas to NOx is 1.0 or more And a heat exchanger for latent heat recovery, which is disposed downstream of the test denitration catalyst in the test exhaust gas flow path and recovers the latent heat of the test exhaust gas vapor. And a NOx concentration measuring means for measuring at least NOx concentration in a test exhaust gas upstream of the test denitration catalyst, a test exhaust gas downstream of the test denitration catalyst, and a test exhaust gas exhausted to the atmosphere And comprising.

This evaluation test device can accurately reproduce the processing flow of the exhaust gas from the gas turbine to the atmosphere in the advanced GTCC on a reduced scale. Therefore, based on the measurement result of the NOx concentration measuring means, the demonstration evaluation of the advanced GTCC can be accurately performed on a reduced scale.

In the evaluation test apparatus according to an aspect of the present disclosure, the test exhaust gas supply means continuously burns the test exhaust gas by using a fan that supplies combustion air, and burning the fuel using the combustion air supplied by the fan. The fan may control the air volume supplied so that the excess air ratio of the test exhaust gas is the same as the excess air ratio of the exhaust gas at the gas turbine outlet. According to this structure, the exhaust gas for a test with the same excess air ratio as the exhaust gas of advanced GTCC can be produced | generated by controlling the air volume of a fan.

In the evaluation test apparatus according to an embodiment of the present disclosure, the burner is a dark / light burner including a dark burner and a light burner, and in the light / dark burner, the NOx concentration of the test exhaust gas is the same as the NOx concentration of the exhaust gas. A flow rate ratio between the gas flow rate of the rich burner and the gas flow rate of the light burner may be set. According to this configuration, by setting the flow rate ratio between the gas flow rate of the rich burner and the gas flow rate of the light burner, it is possible to generate the test exhaust gas having the same NOx concentration as that of the advanced GTCC exhaust gas.

In the evaluation test apparatus according to an embodiment of the present disclosure, the test exhaust gas supply means includes a first heat exchanger that adjusts the temperature of the test exhaust gas, and a temperature of the test exhaust gas that is adjusted in temperature by the first heat exchanger. A first heat exchanger that adjusts the temperature of the exhaust gas for testing to be the same as the temperature of the exhaust gas at the gas turbine outlet, and the second heat exchanger May adjust the temperature of the test exhaust gas so as to be the activation temperature of the test denitration catalyst. According to this configuration, the temperature of the test exhaust gas can be made the same as the exhaust gas at the gas turbine outlet of the advanced GTCC, and then the activation temperature of the test denitration catalyst can be obtained.

In the evaluation test apparatus according to an embodiment of the present disclosure, the test exhaust gas supply unit may distribute the heat medium that has passed through the second heat exchanger to the first heat exchanger. According to this configuration, the heat medium in the first heat exchanger and the second heat exchanger can be operated at the same flow rate. It can easily cope with the demonstration test of the durability test of advanced GTCC.

In the evaluation test apparatus according to an embodiment of the present disclosure, the test denitration catalyst may be capable of removing 99% or more of NOx in the test exhaust gas. According to this configuration, it is possible to perform an empirical evaluation of the advanced GTCC capable of removing 99% or more of NOx in the exhaust gas.

In the evaluation test apparatus according to an embodiment of the present disclosure, the latent heat recovery means is disposed upstream of the latent heat recovery heat exchanger in the flow path of the test exhaust gas, and the temperature of the exhaust gas exhausted to the atmosphere is the temperature of the test exhaust gas. You may have the 3rd heat exchanger adjusted so that it may become the same. According to this configuration, the temperature of the exhaust gas for testing can be made the same as the temperature of the exhaust gas at the smoke outlet of the advanced GTCC.

In the evaluation test apparatus according to an aspect of the present disclosure, the latent heat recovery means may distribute the heat medium that has passed through the latent heat recovery heat exchanger to the third heat exchanger. According to this configuration, it is possible to operate with the heat medium flow rate in the latent heat recovery heat exchanger and the third heat exchanger being the same. It can easily cope with the demonstration test of the durability test of advanced GTCC.

In the evaluation test apparatus according to an aspect of the present disclosure, the latent heat recovery means is disposed between the third heat exchanger and the latent heat recovery heat exchanger in the flow path of the test exhaust gas, and the water vapor in the test exhaust gas is removed. You may have the membrane separation apparatus containing at least any one of the film | membrane which isolate | separates and collects, and the film | membrane which isolate | separates and collects the carbon dioxide in the test exhaust gas. According to this configuration, it is possible to perform demonstration evaluation of the advanced type GTCC in which the membrane separation apparatus is incorporated.

In the evaluation test apparatus according to an embodiment of the present disclosure, the latent heat recovery means may include a condensed water recovery unit that recovers and accumulates the condensed water generated by the recovery of latent heat by the latent heat recovery heat exchanger. In this case, the unreacted reducing agent in the test exhaust gas can be evaluated by analyzing the condensed water in the condensed water recovery unit.

In the evaluation test apparatus according to an embodiment of the present disclosure, at least one of the test exhaust gas supply unit and the latent heat recovery unit may be configured by a gas water heater. According to this configuration, at least one of the test exhaust gas supply means and the latent heat recovery means can be easily realized.

An evaluation test system according to an embodiment of the present disclosure is an evaluation test system for demonstrative evaluation of a gas turbine combined cycle power generation system including a denitration device that removes NOx in exhaust gas exhausted from a gas turbine to the atmosphere. A test exhaust gas supply means for continuously supplying a test exhaust gas having the same characteristics as the exhaust gas, and a part of a denitration catalyst having a honeycomb structure and usable for a denitration apparatus, is supplied from the test exhaust gas supply means. A test denitration catalyst for denitrating the test exhaust gas and a test agent exhaust gas supplied from the test exhaust gas supply means to the test denitration catalyst, wherein the equivalent ratio of the test exhaust gas to NOx is 1.0 or more A reductant charging means for charging the exhaust gas and a latent heat recovery system arranged downstream of the test denitration catalyst in the test exhaust gas flow path to recover the latent heat of the test exhaust gas vapor NOx for measuring at least NOx concentration in a latent heat recovery means having a heat exchanger, a test exhaust gas upstream of the test denitration catalyst, a test exhaust gas downstream of the test denitration catalyst, and a test exhaust gas exhausted to the atmosphere And a data storage unit for storing at least data relating to NOx concentration measured by the NOx concentration measuring means. The test exhaust gas supply means includes a fan for supplying combustion air, and a combustion supplied by the fan. Burner that burns fuel using industrial air and continuously generates test exhaust gas, first heat exchanger that adjusts the temperature of the test exhaust gas, and test in which the temperature is adjusted by the first heat exchanger A second heat exchanger that further adjusts the temperature of the exhaust gas for exhaust gas, and the latent heat recovery means is disposed upstream of the latent heat recovery heat exchanger in the flow path of the test exhaust gas, A third heat exchanger that adjusts the temperature to be the same as the temperature of the exhaust gas exhausted to the atmosphere, and a condensed water recovery unit that recovers and accumulates the condensed water generated by the recovery of latent heat by the latent heat recovery heat exchanger; And the fan controls the amount of combustion air to be supplied so that the excess air ratio of the test exhaust gas is the same as the excess air ratio of the exhaust gas at the gas turbine outlet, and the burner is a rich burner and A concentration burner including a light burner, and in the concentration burner, the flow rate ratio between the gas flow rate of the rich burner and the gas flow rate of the light burner is set so that the NOx concentration of the exhaust gas for test becomes the same as the NOx concentration of the exhaust gas, The first heat exchanger adjusts the temperature of the test exhaust gas to be the same as the temperature of the exhaust gas at the gas turbine outlet, and the second heat exchanger adjusts the temperature of the test exhaust gas to the activity of the test denitration catalyst. With temperature Adjust so that.

This evaluation test system includes the above-described configurations of the test evaluation apparatus, and thus exhibits the same effects as described above. Furthermore, the data storage unit can store and collect data necessary for verification evaluation.

According to the present disclosure, it is possible to provide an evaluation test apparatus and an evaluation test system that can accurately perform an advanced GTCC demonstration evaluation on a reduced scale.

It is a schematic block diagram which shows the evaluation test system which concerns on one Embodiment. It is a schematic diagram which shows the light and dark burner of the evaluation test system of FIG. It is a perspective view which shows the denitration catalyst for a test of the evaluation test system of FIG. It is a schematic block diagram which shows advanced type GTCC used as the object of verification evaluation.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

FIG. 1 is a schematic configuration diagram showing an evaluation test system. FIG. 2 is a schematic diagram showing a light and dark burner. FIG. 3 is a perspective view showing a test denitration catalyst. As shown in FIG. 1, the evaluation test system 10 includes an evaluation test apparatus 20 and a data analysis apparatus 30. The evaluation test apparatus 20 includes a test exhaust gas supply device (test exhaust gas supply means) 40, a test exhaust gas denitration device 50, a latent heat recovery device (latent heat recovery means) 60, and a measuring device 70.

The evaluation test system 10 and the evaluation test apparatus 20 are used for performing demonstration evaluation of the advanced GTCC. Therefore, first, the advanced GTCC that is the target of the demonstration evaluation will be described.

FIG. 4 is a schematic diagram showing an advanced GTCC that is an object of demonstration evaluation. As shown in FIG. 4, the advanced GTCC 1 is a system obtained by evolving GTCC, and includes the following features (1) and (2). The advanced GTCC 1 may also be referred to as advanced GTCC, super GTCC, or sustainable GTCC.
(1) Advancement of denitration performance of denitration equipment. Specifically, 99% of NOx in the exhaust gas is removed, and the NOx concentration of the exhaust gas is set to 0.4 ppm or less so that there is substantially no air pollution.
(2) Recovery of latent heat of steam in exhaust gas that had been released into the atmosphere. Specifically, a heat exchanger is further installed downstream of the heat exchanger that sets the temperature of the exhaust gas discharged from the chimney into the atmosphere to 85 to 90 ° C., and the latent heat of the vapor in the exhaust gas is recovered. The recovered water is almost pure water and is used as makeup water.

Advanced GTCC1 is a system that constitutes a 500,000 kW class power generation facility, for example. The advanced GTCC 1 includes a gas turbine T 1, a steam turbine T 2, a generator 2, a condenser 3, a denitration device 4, a waste heat recovery heat exchanger 5, a latent heat recovery heat exchanger 6, and a chimney 7. The advanced GTCC 1 shown in the figure is a general configuration example. The configuration of the advanced GTCC 1 is not particularly limited. For example, the advanced GTCC 1 shown in the figure is a one-axis type system, but may be a different-axis type system.

The gas turbine T1 and the steam turbine T2 are connected to a common generator 2. A condenser 3 is connected to the steam outlet of the steam turbine T2. The condenser 3 condenses high-temperature steam from the steam outlet of the steam turbine T2 with circulating cooling water. The combustor N attached to the gas turbine T1 is supplied with natural gas (LNG) as fuel gas. The combustion gas generated in the combustor N is supplied to the gas turbine T1. Thereby, the gas turbine T1 is driven.

The exhaust side of the gas turbine T1 is connected to the structure K. In this structure K, an exhaust heat recovery heat exchanger 5 and a latent heat recovery heat exchanger 6 are arranged. The exhaust gas from the gas turbine T1 passes through the heat exchanger 5 for exhaust heat recovery and the heat exchanger 6 for latent heat recovery in this order in the structure K and is heat-exchanged in this order, and then exhausted from the chimney 7 to the atmosphere.

A denitration device 4 is disposed upstream of the heat exchanger 5 for exhaust heat recovery. The denitration device 4 is a selective deoxidation method (SCR method) dry denitration device. Ammonia (NH ₃ ) is supplied from the ammonia supply device 8 to the denitration device 4. In the denitration device 4, NOx in the exhaust gas is reduced by ammonia on the denitration catalyst and decomposed into nitrogen and water vapor. The denitration catalyst of the denitration apparatus 4 here has a honeycomb structure and can remove 99% of exhaust gas NOx.

The water condensed in the condenser 3 is supplied to the latent heat recovery heat exchanger 6 by the feed water pump P in the condensate circulation system 9 and is subjected to heat exchange in the latent heat recovery heat exchanger 6, and then the heat for exhaust heat recovery. Heat is exchanged in the exchanger 5. The high-pressure steam obtained by the heat exchanger 5 for exhaust heat recovery is supplied to the steam turbine T2. Thereby, the steam turbine T2 is driven together with the gas turbine T1. The high temperature steam from the steam outlet of the steam turbine T2 is condensed by the condenser 3 and circulated in the condensate circulation system 9. In the structure K, a membrane separator M is disposed between the heat exchanger 5 for exhaust heat recovery and the heat exchanger 6 for latent heat recovery. The membrane separation device M has at least one of a membrane that separates and recovers water vapor in the exhaust gas and a membrane that separates and recovers carbon dioxide in the exhaust gas. A condensed water recovery unit 6 a is connected to the lower side of the latent heat recovery heat exchanger 6. The condensed water recovered in the condensed water recovery unit 6 a is supplied as makeup water for the condensate circulation system 9.

Next, the evaluation test system 10 will be described with reference to FIGS.

As shown in FIG. 1, the test exhaust gas supply device 40 continuously supplies the test exhaust gas having the same properties as the exhaust gas from the gas turbine T1 of the advanced GTCC1. The test exhaust gas supply apparatus 40 is an apparatus using an FF type (forced supply / exhaust type) household gas water heater using city gas. That is, the test exhaust gas supply device 40 is configured by a gas water heater. The properties of the exhaust gas from the gas turbine T1 of the advanced GTCC 1 can be obtained based on publicly disclosed specification data.

The test exhaust gas supply device 40 has a sealed structure. The test exhaust gas supply device 40 includes a fan 41, a burner 42, a first heat exchanger 43, and a second heat exchanger 44.

The fan 41 supplies combustion air from the intake duct into the housing 45. The fan 41 controls the amount of combustion air to be supplied so that the excess air ratio of the test exhaust gas is the same as the excess air ratio of the exhaust gas at the gas turbine T1 outlet. For example, the amount of combustion air to be supplied can be controlled by adjusting the rotational speed of the fan 41 or the opening of a control damper provided at the intake port of the fan 41. The fan 41 is not particularly limited, and various known fans can be used.

The burner 42 uses the combustion air supplied by the fan 41 to burn gas fuel in the housing 45 and continuously generate test exhaust gas. The amount of gas fuel supplied to the burner 42 can be set as follows. First, based on the SV value required for the test denitration catalyst 51 described later, the flow rate of the test exhaust gas to be passed through the test denitration catalyst 51 is determined in consideration of the scale of the evaluation test apparatus 20 for the advanced GTCC 1. . The amount of gas fuel in the burner 42 is set so that a test exhaust gas capable of realizing this flow rate is generated.

As shown in FIG. 2, the burner 42 is a dark and light burner including a dark burner 42x and a light burner 42y. The rich burner 42x is an auxiliary burner for continuing stable combustion, and generates a rich flame (Bunsen flame) having a high NOx concentration. The light burner 42y is a main burner and generates a light flame (lean flame) having a sufficiently low NOx concentration. The dark burners 42x and the light burners 42y are alternately arranged. The burner 42 which is a light and dark burner realizes low NOx properties and high flame holding properties.

In the burner 42, the flow rate ratio between the gas flow rate of the rich burner 42x and the gas flow rate of the light burner 42y (the nozzle ratio of the light and dark burner) so that the NOx concentration of the exhaust gas for test becomes the same as the NOx concentration of the exhaust gas of the gas turbine T1 Is set. For example, in the burner 42, the flow rate ratio is set as follows.

The concentration burner has an actual value of NOx concentration of 42 ± 10 ppm (oxygen concentration 0% conversion), for example. The NOx concentration of the exhaust gas from the gas turbine T1 is, for example, 50 ppm in terms of 0% oxygen concentration. Therefore, the nozzle of the dark burner 42x is enlarged so that the amount of gas from the dark burner 42x increases by about 20%. Specifically, the cross-sectional area of the nozzle is 1.2 times (the nozzle diameter is 1.1 times). As a result, the NOx concentration of the exhaust gas for test becomes about 50 ppm, so that it can be set within a predetermined concentration standard by fine adjustment. Such a setting is possible by controlling the ejection pressure and gas amount from the nozzle with a gas governor built in the test exhaust gas supply device 40 as a gas water heater.

Note that since most of the combustion gas amount is from the light burner 42y, changes in the gas amount from the rich burner 42x are unlikely to affect the whole. Increasing the amount of gas in the rich burner 42x increases the NOx concentration but stabilizes combustion. If the NOx concentration of the test exhaust gas under the initial conditions is measured, the nozzle diameter of the concentrated burner 42x can be predicted. In one or two trials, the NOx concentration can be set within a desired range. The amount of combustion gas in the burner 42 can be grasped from the temperature and flow rate of the test exhaust gas. The amount of combustion gas in the burner 42 can be controlled by setting the combustion temperature.

1, the first heat exchanger 43 and the second heat exchanger 44 are arranged in the housing 45 in this order in the flow direction of the test exhaust gas. The first heat exchanger 43 and the second heat exchanger 44 perform heat exchange using water (here, tap water) as a heat medium. The downstream side of the water flow path 44a of the second heat exchanger 44 and the upstream side of the water flow path 43a of the first heat exchanger 43 are connected to each other so as to be a direct current. Thereby, the water (warm water) that has passed through the second heat exchanger 44 is circulated to the first heat exchanger 43. The amount of water in the first heat exchanger 43 and the second heat exchanger 44 can be adjusted by the valve opening degree of the valve 46. The amount of water in the first heat exchanger 43 and the second heat exchanger 44 is measured with a water flow meter (not shown). The water flow path 43a and the water flow path 44a may be connected in reverse to the above, that is, the downstream side of the water flow path 43a of the first heat exchanger 43 and the water flow path 44a of the second heat exchanger 44. The upstream side may be connected to each other so as to be a direct current. The water flow path 43a of the first heat exchanger 43 and the water flow path 44a of the second heat exchanger 44 may be configured independently of each other without being connected so as to be direct current. Incidentally, in order to make the amount of water in the first heat exchanger 43 and the second heat exchanger 44 the same, the heat transfer area (number of fins and area) of the first heat exchanger 43 and the second heat exchanger 44 is set to be the same. It is preferable to adjust. This is particularly effective when the durability test described later is performed.

The first heat exchanger 43 adjusts the temperature of the test exhaust gas so as to be the same as the temperature of the exhaust gas at the gas turbine T1 outlet (about 600 ° C.). The second heat exchanger 44 further adjusts the temperature of the test exhaust gas whose temperature has been adjusted by the first heat exchanger 43. The second heat exchanger 44 adjusts the temperature of the test exhaust gas so that it becomes an activation temperature of a test denitration catalyst 51 described later of the test exhaust gas denitration apparatus 50. The activation temperature is a temperature at which the activity of the catalyst is present and the performance of the catalyst can be exhibited. The activation temperature is, for example, 350 ± 100 ° C. The temperature adjustment of the test exhaust gas by the first heat exchanger 43 and the second heat exchanger 44 can be realized by adjusting the amount of water flow through the first heat exchanger 43 and the second heat exchanger 44 by the valve 46.

In such a test exhaust gas supply device 40, the flow rate of the test exhaust gas can be controlled by the rotational speed of the fan 41 or the control damper. The temperature of the test exhaust gas at the outlet of the test exhaust gas supply device 40 can be adjusted by the amount of combustion gas in the burner 42 in addition to the above-described water flow rate adjustment by the first heat exchanger 43 and the second heat exchanger 44. . By controlling the temperature (hot water temperature) of the hot water that has passed through the first heat exchanger 43 and the second heat exchanger 44 to be constant, the test exhaust gas denitration device 50 is constantly and continuously supplied with the test exhaust gas. Can supply.

The test exhaust gas denitration device 50 denitrates the test exhaust gas supplied from the test exhaust gas supply device 40 and supplies it to the latent heat recovery heat exchanger 62 in the subsequent stage. The test exhaust gas denitration apparatus 50 includes a plurality of test denitration catalysts 51 and a reducing agent input device (reducing agent input means) 52.

The test denitration catalyst 51 has a honeycomb structure and denitrates the test exhaust gas. The test denitration catalyst 51 can remove 99% or more of NOx in the test exhaust gas. Removal of 99% or more of NOx indicates a state where there is substantially no air pollution. The state where 99% or more of NOx is removed may be a state where NOx is always below the environmental standard in the ground space where humans exist. “99%” includes measurement errors and the like. The test denitration catalyst 51 is made of, for example, TiO ₂ -supported vanadium pentoxide (V ₂ O ₅ ) or TiO ₂ -supported copper oxide (CuO). The test denitration catalyst 51 has a sufficient surface area for the denitration reaction.

The test denitration catalyst 51 is composed of a part of the denitration catalyst that can be used in the denitration apparatus 4 (see FIG. 4) of the advanced GTCC 1. Specifically, the test denitration catalyst 51 has a structure corresponding to the unit of the denitration catalyst of the denitration apparatus 4. The test denitration catalyst 51 has a block shape of, for example, a cross-sectional area of 150 mm × 150 mm and a thickness of 50 mm (see FIG. 3). The test denitration catalyst 51 may have, for example, a cylindrical shape with a diameter of 150 mm and a thickness of 50 mm in order to make the flow rate of the test exhaust gas uniform. The mesh size and SV value of the test denitration catalyst 51 are the same as those of the denitration catalyst 4 of the advanced GTCC 1 (see FIG. 4).

The test denitration catalyst 51 is incorporated in a metal frame. The test denitration catalyst 51 is arranged in multiple stages (here, three stages) in the duct 53 along the flow direction of the test exhaust gas. The flow rate of the test exhaust gas passing through the test denitration catalyst 51 can be determined by setting the SV value to 45000, for example. Note that the shape, size, and number of the test denitration catalyst 51 are not limited, and may be appropriately changed according to specifications, conditions, and the like. Hereinafter, each of the plurality of test denitration catalysts 51 is referred to as a first stage, a second stage, and a third stage from the upstream side in the flow direction of the test exhaust gas. The test denitration catalyst 51 is designed with SV = 45000 as its initial specification. Since the test denitration catalyst 51 has improved performance and clean natural gas is used as fuel, the SV value can be increased.

The reducing agent charging device 52 is a reducing agent having an equivalent ratio of NOx of the test exhaust gas to NOx of 1.0 or more in the test exhaust gas supplied from the test exhaust gas supply device 40 to the test denitration catalyst 51 (here, Ammonia gas). The “equivalent ratio” is the ratio of the amount of reducing agent to be added to the amount of reducing agent necessary for denitrating all NOx in the test exhaust gas. That is, a reducing agent having an equivalent ratio of 1.0 or more with respect to NOx is a reducing agent in an amount more than the amount of reducing agent necessary for denitrating all NOx in the exhaust gas for test. When the reducing agent is ammonia gas, the reducing agent charging device 52 performs feedback control so that the amount of the reducing agent to be charged is equal to or more than the amount of NOx in the test exhaust gas. The reducing agent charging device 52 is disposed in the duct 53 upstream of the test denitration catalyst 51. The reducing agent charging device 52 shown in the figure injects a certain amount of reducing agent according to the NOx concentration of the test exhaust gas while the diameter of the duct 53 is gradually increasing from the inlet toward the first-stage test denitration catalyst 51. To do.

The reducing agent input device 52 controls the amount of reducing agent input so that the ratio of the reducing agent to NOx in the test exhaust gas becomes constant. When the reducing agent is ammonia gas, the reducing agent charging device 52 inputs a slightly larger amount (1.2 times) of the reducing agent than NOx of the test exhaust gas. The reducing agent charging device 52 dilutes the reducing agent with air in advance. The reducing agent input device 52 can automatically input the reducing agent into the test exhaust gas. It does not specifically limit as a reducing agent, Other various reducing agents may be sufficient. For example, the reducing agent may be urea (CO (NH ₂ ) ₂ ) gas. Note that the reducing agent, which is ammonia gas, has an equivalent reaction with NOx and reacts with NOx in a one-to-one relationship. Since the reducing agent, which is urea gas, has two Ns in the molecule, it reacts two-to-one with NOx.

The latent heat recovery device 60 is a device that uses an FF-type household gas water heater using city gas, like the test exhaust gas supply device 40. That is, the latent heat recovery device 60 is configured by a gas water heater. The latent heat recovery device 60 is disposed downstream of the test denitration catalyst 51 in the test exhaust gas flow path. The latent heat recovery device 60 has a sealed structure. The latent heat recovery device 60 includes a third heat exchanger 61, a latent heat recovery heat exchanger 62, a condensed water recovery unit 63, and a membrane separation device 64.

The third heat exchanger 61 and the latent heat recovery heat exchanger 62 are arranged in the casing 65 in this order in the flow direction of the test exhaust gas. The third heat exchanger 61 and the latent heat recovery heat exchanger 62 perform heat exchange using water (here, tap water) as a heat medium. The upstream side of the water flow path 61a of the third heat exchanger 61 and the downstream side of the water flow path 62a of the latent heat recovery heat exchanger 62 are connected to each other so as to be a direct current. Thereby, the water (hot water) that has passed through the latent heat recovery heat exchanger 62 is circulated to the third heat exchanger 61. The amount of water in the third heat exchanger 61 and the latent heat recovery heat exchanger 62 can be adjusted by the valve opening of the valve 66. The amount of water in the third heat exchanger 61 and the latent heat recovery heat exchanger 62 is measured by a water flow meter (not shown). The water channel 61a and the water channel 62a may be connected in reverse to the above, that is, the upstream side of the water channel 62a of the latent heat recovery heat exchanger 62 and the water channel 61a of the third heat exchanger 61. May be connected to each other so as to be a direct current. The water flow path 61a of the third heat exchanger 61 and the water flow path 62a of the latent heat recovery heat exchanger 62 may be configured independently of each other without being connected to form a direct current.

The third heat exchanger 61 is disposed upstream of the latent heat recovery heat exchanger 62 in the test exhaust gas flow path. The third heat exchanger 61 adjusts the temperature of the test exhaust gas so as to be the same as the temperature of the exhaust gas exhausted to the atmosphere by the advanced GTCC 1 (exhaust gas outlet temperature). As the exhaust gas outlet temperature of the advanced GTCC 1, the outlet temperature of the chimney 7 is used and is 85 to 90 ° C. The outlet temperature of the chimney 7 is designed at a lower limit temperature at which water vapor is not liquefied.

The latent heat recovery heat exchanger 62 recovers the latent heat of the steam of the test exhaust gas. Specifically, the latent heat recovery heat exchanger 62 adjusts the temperature of the test exhaust gas to 50 ° C. The adjustment of the temperature of the test exhaust gas by the third heat exchanger 61 and the latent heat recovery heat exchanger 62 can be realized by adjusting the water flow rate of the third heat exchanger 61 and the latent heat recovery heat exchanger 62 by the valve 66. .

The condensate recovery unit 63 collects and accumulates the condensed water generated by the latent heat recovery by the latent heat recovery heat exchanger 62 in the housing 65. The condensed water recovery unit 63 is not particularly limited, and various known configurations can be used.

The membrane separation device 64 is disposed between the third heat exchanger 61 and the latent heat recovery heat exchanger 62 in the test exhaust gas flow path. The membrane separation device 64 includes at least one of a membrane for separating and collecting water vapor in the test exhaust gas and a membrane for separating and collecting carbon dioxide in the test exhaust gas. The membrane separation device 64 here includes a membrane for separating and collecting water vapor, or includes a membrane for separating and collecting water vapor and a membrane for separating and collecting carbon dioxide. The membrane separation device 64 is not particularly limited, and various known devices can be used. Note that the membrane separation device 64 may not be provided. In the case where the membrane separation device 64 is not provided, the membrane separation device 64 may be arranged (attachable) in the housing 65 so that the membrane separation device 64 can be mounted in the future, for example.

The measuring device 70 is a device that measures data relating to the test exhaust gas. The measuring device 70 includes first analyzers (NOx concentration measuring means) 71a to 71e, a second analyzer 72, and temperature sensors 73a to 73d.

The first analyzers 71a to 71e continuously measure at least NOx concentration and ammonia concentration of the test exhaust gas. The first analyzer 71a analyzes the exhaust gas for testing on the upstream side (inlet) of the first-stage test denitration catalyst 51. The first analyzer 71b analyzes the test exhaust gas between the first-stage test denitration catalyst 51 and the second-stage test denitration catalyst 51. The first analyzer 71c analyzes the test exhaust gas between the second-stage test denitration catalyst 51 and the third-stage test denitration catalyst 51. The first analyzer 71d analyzes the test exhaust gas downstream (outlet) of the third-stage test denitration catalyst 51. The first analyzer 71e analyzes the test exhaust gas exhausted from the latent heat recovery device 60 to the atmosphere.

The second analyzer 72 measures at least the ammonia concentration of the condensed water collected by the condensed water collecting unit 63. The first analyzers 71a to 71e and the second analyzer 72 are not particularly limited, and various known analyzers can be applied. For example, as the first analyzers 71a to 71e and the second analyzer 72, an infrared analyzer may be used, or a batch type analyzer may be used. For example, as the first analyzers 71a to 71e, general-purpose gas measuring instruments that are widely used may be used.

The temperature sensor 73 a is provided downstream of the first heat exchanger 43. The temperature sensor 73 a detects the temperature of the test exhaust gas downstream of the first heat exchanger 43. The temperature sensor 73 b is provided downstream of the second heat exchanger 44. The temperature sensor 73 b detects the temperature of the test exhaust gas downstream of the second heat exchanger 44. The temperature sensor 73 c is provided downstream of the third heat exchanger 61. The temperature sensor 73 c detects the temperature of the test exhaust gas downstream of the third heat exchanger 61. The temperature sensor 73d is provided downstream of the latent heat recovery heat exchanger 62. The temperature sensor 73d detects the temperature of the test exhaust gas downstream of the latent heat recovery heat exchanger 62. The temperature sensors 73a to 73d are not particularly limited, and various known temperature sensors can be applied.

Various data measured by the measuring device 70 is output to the data analyzing device 30. In addition, various data measured by the measuring device 70 are appropriately output to each element of the evaluation test apparatus 20, and thereby each element of the evaluation test apparatus 20 is appropriately controlled based on the data.

The data analysis device 30 executes at least one of monitoring, collection, storage, analysis, and output of various data measured by the measurement device 70. The data storage unit 31 stores (records) and stores various data measured by the measurement device 70. That is, the data storage unit 31 stores at least data relating to the NOx concentration of the test exhaust gas measured by the first analyzers 71a to 71e. The data analysis device 30 may include an operation unit and a display unit (not shown), and may output various data measured by the measurement device 70 to the display unit in response to an operation input from the operation unit. The data analysis device 30 accumulates various data measured by the measurement device 70 in the data storage unit 31. The data analyzer 30 constantly monitors whether various data are within the design standard or the management standard.

In the above-described evaluation test system 10, first, in the test exhaust gas supply device 40, combustion air is supplied by the fan 41, gas fuel is burned by the burner 42 using this combustion air, and the test exhaust gas. Occurs continuously. The test exhaust gas is heat-exchanged by the first heat exchanger 43 and the second heat exchanger 44 and then continuously supplied to the test exhaust gas denitration apparatus 50.

In the test exhaust gas denitration device 50, the reducing agent input device 52 supplies a reducing agent having an equivalent ratio of 1.0 or more to NOx of the test exhaust gas into the test exhaust gas. The test exhaust gas is continuously supplied to the latent heat recovery device 60 after 99% or more of NOx is removed by the test denitration catalyst 51. In the latent heat recovery device 60, the test exhaust gas is heat-exchanged by the third heat exchanger 61, and at least one of water vapor and carbon dioxide is separated and recovered by the membrane separation device 64, and the latent heat recovery is performed by the latent heat recovery heat exchanger 62. And then exhausted to the atmosphere.

Various data are measured by the measuring device 70 in conjunction with a series of processes including continuous supply, denitration, latent heat recovery, and exhaust for the test exhaust gas. In the data analysis device 30, at least one of monitoring, collection, storage, analysis, and output of various data measured by the measurement device 70 is performed.

Next, each demonstration evaluation using the evaluation test system 10 will be described.

[I Demonstration evaluation of NOx removal catalyst and collection of development data]
Based on the power generation output (for example, about 500,000 kW) and power generation efficiency (for example, 60% (low heating value)) of the advanced GTCC 1 (actual machine), the reduction rate (for example, 1 / 10,000) of the evaluation test system 10 The combustion gas amount of the burner 42 of the evaluation test system 10 is set. The reduction rate is generally determined from the combustion parameters of the original gas water heater that constitutes the test exhaust gas supply device 40. Based on this, the excess air ratio and the NOx concentration are determined so as to be the same as the exhaust gas of the advanced GTCC1.

Then, gas fuel is supplied to the test exhaust gas supply device 40 and water is passed through the test exhaust gas supply device 40. As a result, the test exhaust gas is continuously supplied to the test exhaust gas denitration device 50, and denitration is performed by the test denitration catalyst 51. At this time, the temperature of the test exhaust gas controlled by the first heat exchanger 43 and the second heat exchanger 44 is adjusted by the water flow rate of the first heat exchanger 43 and the second heat exchanger 44. Specifically, the temperature of the exhaust gas for test is adjusted to the exhaust gas temperature (about 600 ° C.) at the outlet of the gas turbine T1 by adjusting the water flow rate of the first heat exchanger 43. By adjusting the water flow rate of the second heat exchanger 44, the temperature of the test exhaust gas (the outlet temperature of the test exhaust gas of the test exhaust gas supply device 40) measured by the temperature sensor 73 b is changed to the test denitration catalyst 51. It controls so that it may become active temperature (350 +/- 100 degreeC).

Further, the combustion gas amount of the burner 42 is set so that the excess air ratio of the exhaust gas for test becomes the same as the excess air ratio of the exhaust gas at the outlet of the gas turbine T1 (see FIG. 4) (the excess air ratio determined as described above). While setting to a predetermined amount and burning, the air amount of the combustion air of the fan 41 is adjusted. The excess air ratio of the test exhaust gas is obtained by measuring the oxygen concentration in the test exhaust gas with a measuring instrument (not shown). The excess air ratio of the exhaust gas at the gas turbine T1 outlet can be determined from known data.

Further, the flow rate of the test exhaust gas to be passed through the test denitration catalyst 51 is obtained from the SV value of the test denitration catalyst 51 and the scale of the evaluation test apparatus 20, and the burner is generated so that the test exhaust gas capable of realizing this flow rate is generated. Set gas fuel to 42. The NOx concentration measured by the first analyzer 71a becomes the same as the NOx concentration of the exhaust gas of the gas turbine T1 (the NOx concentration determined as described above) by changing the nozzle ratio of the rich burner 42x and the light burner 42y. Adjust as follows. The amount of reducing agent introduced into the test exhaust gas by the reducing agent introduction device 52 is such that the equivalent ratio with respect to NOx measured by the first analyzer 71a is 1.0 or more and the ratio to NOx is constant. Control.

The exhaust gas properties of the test exhaust gas on the downstream side of the test denitration catalyst 51 are measured by the first analyzer 71d. From this measurement result, the test denitration catalyst 51 is evaluated. The first analyzers 71b and 71c measure the exhaust gas properties of the test exhaust gas between the adjacent test denitration catalysts 51. From this measurement result, the status of the denitration reaction at the intermediate stage is evaluated. Then, the measurement result and the evaluation result are stored and collected in the data storage unit 31 as optimum design data, maintenance management data, or development data.

As a result, at least the following effects are obtained with respect to the test denitration catalyst 51.
1) It can be evaluated that 99% denitration can be achieved at the initial design value.
2) Through the demonstration evaluation, it is possible to develop a high-performance catalyst device with a larger SV value.

[II. Recovery of latent heat in exhaust gas and confirmation of recovered water properties]
Water is passed through the latent heat recovery device 60, heat exchange is performed on the test exhaust gas that has passed through the test denitration catalyst 51, and data of recovered condensed water is collected. At this time, the amount of water flow through the third heat exchanger 61 is adjusted, and the temperature detected by the temperature sensor 73c is controlled to be the exhaust gas outlet temperature (85 to 90 ° C.) of the advanced GTCC1. The amount of water passing through the latent heat recovery heat exchanger 62 is adjusted, and the temperature detected by the temperature sensor 73d is controlled to be 50 ° C.

The exhaust gas property of the test exhaust gas exhausted to the atmosphere is measured by the first analyzer 71e. The amount of condensed water condensed by the latent heat recovery of the latent heat recovery heat exchanger 62 and recovered in the condensed water recovery unit 63 is confirmed. The property of the condensed water is measured by the second analyzer 72. Then, the measurement results are stored in the data storage unit 31 and collected.

[III Confirmation of endurance test]
Gas fuel is continuously supplied to the test exhaust gas supply device 40 and water is continuously passed through the test exhaust gas supply device 40 and the latent heat recovery device 60. The reducing agent charging device 52 is set so that the reducing agent is automatically charged into the test exhaust gas. The endurance test must be performed continuously, and at least about 6000 hours per year can be performed in order to grasp the change in performance.

Various data are measured by the first analyzers 71a to 71e, the second analyzer 72, and the temperature sensors 73a to 73d. Various data may be measured continuously or periodically. Then, the measurement results are stored in the data storage unit 31 and collected.

As described above, in the present embodiment, a reducing agent having an equivalent ratio of NO to NOx of 1.0 or more of the test exhaust gas is included in the test exhaust gas continuously supplied from the test exhaust gas supply device 40 to the test denitration catalyst 51. throw into. Therefore, even when using a test denitration catalyst 51 with advanced denitration performance (that is, NOx can be removed by 99% or more), there is no shortage of reducing agent necessary for denitration reaction, and it can handle denitration. it can. Further, the latent heat of the exhaust gas for the test exhaust gas can be recovered by the latent heat recovery device 60. That is, according to the present embodiment, it is possible to accurately reproduce the processing flow of the exhaust gas from the gas turbine T1 to the atmosphere in the advanced GTCC 1 with a reduced scale of about 1 / 10,000 to 1 / 10,000. .

Therefore, based on the various data measured by the measuring device 70, the advanced GTCC 1 can be verified on a reduced scale with high accuracy. Through the demonstration evaluation results, it is possible to acquire know-how and request technical personnel. It is possible to develop the performance and flexibility of the advanced GTCC1. By grasping the basic performance of the advanced GTCC1, necessary design development data can be collected. Based on these data, the heat transfer area of the heat exchanger of the advanced GTCC 1 can be adjusted.

In the present embodiment, the test exhaust gas supply device 40 includes a fan 41 and a burner 42. By using the fan 41 and the burner 42, a test exhaust gas having the same properties as the exhaust gas of the advanced GTCC 1 can be generated. The fan 41 controls the amount of air to be supplied so that the excess air ratio of the exhaust gas for test becomes the same as the excess air ratio of the exhaust gas at the gas turbine T1 outlet. By controlling the air volume of the fan 41, it is possible to generate a test exhaust gas having the same excess air ratio as the exhaust gas of the advanced GTCC1.

In this embodiment, the burner 42 is a dark and light burner including a dark burner 42x and a light burner 42y. By setting the flow rate ratio between the gas flow rate of the rich burner 42x and the gas flow rate of the light burner 42y, it is possible to generate a test exhaust gas having the same NOx concentration as the exhaust gas of the advanced GTCC1.

In the present embodiment, the test exhaust gas supply device 40 includes a first heat exchanger 43 and a second heat exchanger 44. According to this configuration, the temperature of the test exhaust gas is made the same as the exhaust gas at the gas turbine T1 outlet of the advanced GTCC 1 by the first heat exchanger 43, and then the activity of the test denitration catalyst 51 is increased by the second heat exchanger 44. Can be temperature.

In the present embodiment, in the test exhaust gas supply device 40, the heat medium that has passed through the second heat exchanger 44 is circulated to the first heat exchanger 43. According to this configuration, the heat medium in the first heat exchanger 43 and the second heat exchanger 44 can be operated at the same flow rate. It is possible to easily cope with the above-described durability test of the advanced GTCC1.

In the present embodiment, the test denitration catalyst 51 can remove 99% or more of NOx in the test exhaust gas. According to this configuration, it is possible to perform a demonstration evaluation of the advanced GTCC 1 capable of removing 99% or more of NOx in the exhaust gas.

In the present embodiment, the latent heat recovery device 60 includes a third heat exchanger 61. The temperature of the exhaust gas for testing is adjusted by the third heat exchanger 61 so as to be the same as the temperature of the exhaust gas exhausted to the atmosphere in the advanced GTCC 1. According to this configuration, the temperature of the exhaust gas for testing can be made the same as the temperature of the exhaust gas at the exit of the chimney 7 (see FIG. 4) of the advanced GTCC 1.

In the present embodiment, in the latent heat recovery device 60, the heat medium that has passed through the latent heat recovery heat exchanger 62 is circulated to the third heat exchanger 61. According to this configuration, the latent heat recovery heat exchanger 62 and the third heat exchanger 61 can be operated at the same flow rate of the heat medium. It is possible to easily cope with the above-described durability test of the advanced GTCC1.

In the present embodiment, the latent heat recovery device 60 has a membrane separation device 64. According to this configuration, it is possible to perform a demonstration evaluation of the advanced type GTCC 1 in which the membrane separation device 64 is incorporated. In other words, it is possible to perform proof evaluation incorporating a membrane separation technique. The expandability and developability of the evaluation test system 10 and the evaluation test apparatus 20 can be improved.

In the present embodiment, the latent heat recovery device 60 has a condensed water recovery unit 63 that recovers and accumulates condensed water generated by the recovery of latent heat by the latent heat recovery heat exchanger 62. By analyzing the condensed water in the condensed water recovery unit 63 with the second analyzer 72, the unreacted reducing agent (ammonia dissolved in the condensed water) in the test exhaust gas can be evaluated. Ammonia is considered to be changed to ammonium carbonate or the like when dissolved in water.

In the present embodiment, the test exhaust gas supply device 40 and the latent heat recovery device 60 are constituted by a gas water heater. According to this configuration, the test exhaust gas supply device 40 and the latent heat recovery device 60 can be easily realized. Only one of the test exhaust gas supply device 40 and the latent heat recovery device 60 may be constituted by a gas water heater.

In the present embodiment, the data storage unit 31 can store and collect various data necessary for verification evaluation.

In the present embodiment, the exhaust gas properties of the test exhaust gas between the adjacent test denitration catalysts 51 are measured by the first analyzers 71b and 71c. Thereby, the status of the denitration reaction in the intermediate stage can be monitored. Maintenance management information such as performance deterioration or replacement of the test denitration catalyst 51 can be easily obtained. In the present embodiment, the exhaust gas properties of the test exhaust gas exhausted to the atmosphere are measured by the first analyzer 71e. Thereby, ammonia and NOx finally exhausted can be monitored, and it can be confirmed and confirmed that these are within the control standard.

In this embodiment, the difference in pressure loss or the like between the advanced GTCC 1 and the evaluation test system 10 (evaluation test apparatus 20) can be dealt with by physical measures such as diffusion of test exhaust gas or prevention of drift.

It can be grasped qualitatively or computationally that the benefits of making the GTCC an advanced GTCC1 are extremely large. However, it is a huge infrastructure facility with an actual equipment investment of 100 billion yen, and it is a business that operates stably for a long period of several decades. In general, there are significant risks for commercialization and adoption. In this regard, in the present embodiment, it is possible to specifically examine and visualize the advanced GTCC 1 through demonstration evaluation.

According to the evaluation test system 10 and the evaluation test apparatus 20, the following effects are also exhibited.
The evaluation test system 10 or the evaluation test apparatus 20 can be used to evaluate catalysts from a plurality of catalyst manufacturers.
The evaluation test system 10 or the evaluation test apparatus 20 can function as a voluntary performance assurance system by a third party organization.
A gas turbine manufacturer, a power generation company, and a catalyst manufacturer can use the evaluation test system 10 or the evaluation test apparatus 20 by themselves.
・ Power generation companies can voluntarily disclose information, such as disclosing necessary data, and can build a transparent system.
-A system or device that can act equally with large companies such as GTCC manufacturers and power generation companies can be provided. Participating companies can secure appropriate and stable earnings.
-New entry into the advanced GTCC1 as an open innovation system.
A data system that guarantees the concept of IoT (Internet of Things) can be constructed using the evaluation test system 10 or the evaluation test apparatus 20.
The advanced GTCC 1 can be operated stably for a long period of time based on various data accumulated by monitoring the situation in the evaluation test system 10 or the evaluation test apparatus 20.
The evaluation test system 10 or the evaluation test apparatus 20 can be incorporated with a system having a platform that can be flexibly developed and coped with technological progress.
-Benefits such as shortening the evaluation period and ease of procurement and evaluation of business funds.

The advanced GTCC 1 has the following merits in addition to the merits of normal GTCC.
a) There is no air pollutant and no chimney is required.
i) This saves the cost of making a chimney.
ii) Landscape considerations are much smaller. There is no influence of the radio interference by the chimney.
iii) Air pollution impact assessment, which is the main item of environmental impact assessment, is small. As a result, it is easy to form a consensus in the local area in the environmental impact assessment procedure, and shorten the period until operation.
b) An efficient power plant for local production for local consumption can be realized.
i) It is easy to use infrastructure facilities such as natural gas or high-voltage power distribution network in large urban areas.
ii) Transmission loss is small and more economical.
iii) High degree of freedom in installation. It can be promoted in a short time from planning to operation.
c) Latent heat recovery and effective use of water.
i) A heat exchanger can be realized simply by increasing the scale of a system in a domestic water heater, and the use environment is stabilized. The economic effect is very large.
ii) The recovered condensed water is basically distilled water. It can be used effectively regardless of the location as makeup water with high water quality.
iii) For further effective use of water, it is easy to proceed with examination through demonstration evaluation and development evaluation related to this disclosure. For example, although it is a cooling tower system, compared with the cooling tower by the conventional air heat exchange, it can demonstrate as a hybrid cooling tower of water and air with the recovered condensed water.

By the way, thermal power plants without air pollution are evaluated internationally based on JICA's social environment consideration guidelines. Conventional thermal power plants are category A even if they are GTCC. On the other hand, in the advanced type GTCC1, the business risk can be significantly reduced by reducing the environmental load, and positioning in the category B can be an effective target.

As mentioned above, although embodiment which concerns on this indication was described, this indication is not limited to the said embodiment. The present disclosure may be modified without changing the gist described in each claim. You may combine arbitrarily at least one part of the said embodiment. The term “identical” in the above includes not only completely the same but substantially the same, and includes errors in design, measurement, manufacturing, and the like. The term “same” in the above includes not only completely the same case but also substantially the same case, and includes errors such as design, measurement, and manufacturing.

DESCRIPTION OF SYMBOLS 1 ... Advanced type GTCC, 4 ... Denitration device, 10 ... Evaluation test system, 20 ... Evaluation test device, 30 ... Data analysis device, 31 ... Data storage part, 40 ... Exhaust gas supply device for test (exhaust gas supply means for test), 41 ... Fan, 42 ... Burner, 42x ... Dense burner, 42y ... Light burner, 43 ... First heat exchanger, 44 ... Second heat exchanger, 50 ... Exhaust denitration device for test, 51 ... Denitration catalyst for test, 52 ... reducing agent charging device (reducing agent charging means), 60 ... latent heat recovery device (latent heat recovery means), 61 ... third heat exchanger, 62 ... latent heat recovery heat exchanger, 63 ... condensed water recovery section, 64 ... membrane Separator, 71a to 71e, first analyzer (NOx concentration measuring means), T1, gas turbine.

Claims

An evaluation test apparatus for demonstrative evaluation of a gas turbine combined cycle power generation system equipped with a denitration device that removes NOx in exhaust gas exhausted from the gas turbine to the atmosphere,
A test exhaust gas supply means for continuously supplying a test exhaust gas having the same properties as the exhaust gas;
A test denitration catalyst that has a honeycomb structure and is configured of a part of a denitration catalyst that can be used in the denitration apparatus, and denitrates the test exhaust gas supplied from the test exhaust gas supply means;
Reducing agent input means for introducing a reducing agent having an equivalent ratio of NOx of the test exhaust gas to NOx into the test exhaust gas supplied from the test exhaust gas supply means to the test denitration catalyst;
Latent heat recovery means that is disposed downstream of the test denitration catalyst in the test exhaust gas flow path and has a latent heat recovery heat exchanger that recovers the latent heat of the vapor of the test exhaust gas;
NOx concentration measuring means for measuring at least the NOx concentration in the test exhaust gas upstream of the test denitration catalyst, the test exhaust gas downstream of the test denitration catalyst, and the test exhaust gas exhausted to the atmosphere; An evaluation test apparatus.
The test exhaust gas supply means includes:
A fan for supplying combustion air;
A burner that burns fuel using the combustion air supplied by the fan and continuously generates the exhaust gas for testing,
The said fan controls the air quantity of the said combustion air supplied so that the excess air ratio of the said test waste gas may become the same as the excess air ratio of the said waste gas in the said gas turbine exit. Evaluation test equipment.
The burner is a dark and light burner including a dark burner and a light burner,
The flow rate ratio between the gas flow rate of the rich burner and the gas flow rate of the light burner is set so that the NOx concentration of the test exhaust gas is the same as the NOx concentration of the exhaust gas in the light and dark burner. 2. The evaluation test apparatus according to 2.
The test exhaust gas supply means includes:
A first heat exchanger for adjusting the temperature of the test exhaust gas;
A second heat exchanger that further adjusts the temperature of the test exhaust gas, the temperature of which is adjusted by the first heat exchanger,
The first heat exchanger adjusts the temperature of the test exhaust gas so as to be the same as the temperature of the exhaust gas at the gas turbine outlet,
The evaluation test apparatus according to any one of claims 1 to 3, wherein the second heat exchanger adjusts the temperature of the test exhaust gas so as to be an activation temperature of the test denitration catalyst.
5. The evaluation test apparatus according to claim 4, wherein the test exhaust gas supply means distributes the heat medium that has passed through the second heat exchanger to the first heat exchanger.
6. The evaluation test apparatus according to claim 1, wherein the test denitration catalyst is capable of removing 99% or more of NOx in the test exhaust gas.
The latent heat recovery means includes
A third heat exchanger that is disposed upstream of the latent heat recovery heat exchanger in the test exhaust gas flow path and adjusts the temperature of the test exhaust gas to be the same as the temperature of the exhaust gas exhausted to the atmosphere. The evaluation test apparatus according to any one of claims 1 to 6, comprising:
The evaluation test apparatus according to claim 7, wherein the latent heat recovery means distributes the heat medium that has passed through the latent heat recovery heat exchanger to the third heat exchanger.
The latent heat recovery means includes
A membrane for separating and recovering water vapor in the test exhaust gas and carbon dioxide in the test exhaust gas, which is disposed between the third heat exchanger and the latent heat recovery heat exchanger in the flow path of the test exhaust gas The evaluation test apparatus according to claim 7 or 8, further comprising a membrane separation device including at least one of membranes for separating and recovering the gas.
The latent heat recovery means includes
The evaluation test apparatus according to any one of claims 1 to 9, further comprising a condensate recovery unit that recovers and accumulates condensate generated by recovering latent heat by the latent heat recovery heat exchanger.
The evaluation test apparatus according to any one of claims 1 to 10, wherein at least one of the test exhaust gas supply means and the latent heat recovery means is configured by a gas water heater.
An evaluation test system for demonstrative evaluation of a gas turbine combined cycle power generation system equipped with a denitration device for removing NOx in exhaust gas exhausted from the gas turbine to the atmosphere,
A test exhaust gas supply means for continuously supplying a test exhaust gas having the same properties as the exhaust gas;
A test denitration catalyst that has a honeycomb structure and is configured of a part of a denitration catalyst that can be used in the denitration apparatus, and denitrates the test exhaust gas supplied from the test exhaust gas supply means;
Reducing agent input means for introducing a reducing agent having an equivalent ratio of NOx of the test exhaust gas to NOx into the test exhaust gas supplied from the test exhaust gas supply means to the test denitration catalyst;
Latent heat recovery means that is disposed downstream of the test denitration catalyst in the test exhaust gas flow path and has a latent heat recovery heat exchanger that recovers the latent heat of the vapor of the test exhaust gas;
NOx concentration measuring means for measuring at least the NOx concentration in the test exhaust gas upstream of the test denitration catalyst, the test exhaust gas downstream of the test denitration catalyst, and the test exhaust gas exhausted to the atmosphere;
A data storage unit for storing at least data relating to the NOx concentration measured by the NOx concentration measuring means,
The test exhaust gas supply means includes:
A fan for supplying combustion air;
A burner that burns fuel using the combustion air supplied by the fan and continuously generates the exhaust gas for testing;
A first heat exchanger for adjusting the temperature of the test exhaust gas;
A second heat exchanger that further adjusts the temperature of the test exhaust gas, the temperature of which is adjusted by the first heat exchanger,
The latent heat recovery means includes
A third heat exchanger that is disposed upstream of the latent heat recovery heat exchanger in the test exhaust gas flow path and adjusts the temperature of the test exhaust gas to be the same as the temperature of the exhaust gas exhausted to the atmosphere. When,
A condensed water recovery unit that recovers and accumulates condensed water generated by the recovery of latent heat by the latent heat recovery heat exchanger, and
The fan controls the air amount of the combustion air to be supplied so that the excess air ratio of the exhaust gas for test becomes the same as the excess air ratio of the exhaust gas at the gas turbine outlet,
The burner is a light and dark burner including a dark burner and a light burner,
In the concentration burner, the flow rate ratio between the gas flow rate of the concentration burner and the gas flow rate of the light burner is set so that the NOx concentration of the exhaust gas for test becomes the same as the NOx concentration of the exhaust gas,
The first heat exchanger adjusts the temperature of the test exhaust gas so as to be the same as the temperature of the exhaust gas at the gas turbine outlet,
The second heat exchanger is an evaluation test system in which the temperature of the test exhaust gas is adjusted to be the activation temperature of the test denitration catalyst.