Dataset on the integrated downdraft gasifier and multi integrated gas cleaner system (IGCS) for municipal solid waste (MSW)

This experiment uses the Municipal Solid Waste (MSW) from households and traditional markets as feed materials in the Integrated Downdraft Gasifier and Multi Integrated Gas Cleaner System (IGCS). The IGCS consist of cyclone, rectangular venturi scrubber, and rotary separator. The data from the experiment show the gasification characteristics such as temperature, Low Heating Value (LHV) and tar content. The parameter consists of Air Fuel ration (AFR) at 0.48, 0.5, 0.54 scrubbing water discharge at 1.26, 2.62, 3.33 l/min, and 0.9 rotary separator using suction speed at 0.9, 3.4, 4.4 m/s, respectively. The data also show the power output of the plant and energy balance of the system. This data can be used as reference for the further development of Integrated Downdraft Gasifier and Multi-Integrated Gas Cleaner systems.


Specifications
Renewable Energy, Sustainability and the Environment Specific subject area Biomass processing experiments using integrated systems Type of data

Value of the data
• This data presents the experimental results of Municipal Solid Waste (MSW) processing using a downdraft gasifier and multi Integrated Gas Cleaner System (IGCS) on several variables to show the gasification characteristics, calorific value, and tar content obtained. • The data can be used as a reference in determining the experimental design of similar subsequent research and development. • The method used in obtaining data, acts as a reference used to determine further design of the experiment to obtain better results • With the same method and data, different materials can be used to optimize the system.

Data description
The data presented were obtained from design and experimental examination of all components of the gasification plant which included gasifier reactors and gas cleaners. The system consists of a cyclone, a venturi scrubber and a rotary separator designed to produce gas with a Low Heating Value (LHV) greater than 2500 kJ/Nm3 and tar 100 mg/Nm3 [1 , 2] . Table 1 shows the Air Fuel Ratio (AFR) calculated from various air mass flow rate used in organic Municipal Solid Waste (MSW). Fig. 1 then shows the temperature profile of drying, pyrolysis, oxidation and the reduction zones of each AFR. It also shows the gasification performance characteristics of the feed. Fig. 2 shows the effect of AFR on the formation of tar, while Fig. 3 shows the Tar weight Table 1 AFR gasification system.

Mass (kg)
Blower voltage (V) Air mass flow rate (kg/s) Gasification duration (minute) AFR  in multi IGCS system. Fig. 4 shows the comparison of power output in various AFR. In addition, Tables 2 and 3 show the incoming and outcoming energy balance on the system.

Characteristics of organic municipal solid waste (MSW)
Organic Municipal Solid Waste (MSW) such as wood, leaves, paper, food, vegetables, and fruits were collected from various households and traditional markets in Bandung, Indonesia. The raw materials are dried using solar heat for 3-4 h, it then examined to obtain proximate, ultimate, and heating values as shown in Table 4 .

Reactor design
The design of the Imbert downdraft gasifier is based on the specific gasification rate, also called the fireplace load (Bh), where N indicates that the gas volume is calculated under normal atmospheric temperature and pressure. The maximum of Bh in the Imbert gasifier is 0.9 for continuous operating conditions with a minimum range of 0.3-0.35 [3 , 4] .
The value of the fireplace load is determined by using the following formula [3] The gasifier diameter (D) is determined by using the following formula where FCR is the level of fuel consumption (kg/hour) In addition, the gasifier height (H) is determined by using the formula where SGR is the specific gasification speed (kg /hm2), t is the batch operating time (h), and ρf is the compatibility of raw material (kg/m 3 ) Five tuyeres are used to supply air requirements with the diameter (d) obtained by using the formula where v is the air inlet speed in the tuyere (m/s) and Z is the number of tuyeres [5] .

Cyclone separator design
The preliminary data used to design a cyclone are shown in Table 5 .
The cyclone inlet width passed by the organic MSW in the form of particles to the cyclone (Dp, th) with a theoretical efficiency of V in = 10 m/s, is calculated using the formula The number of gas cycles in the cyclone (Ns) with V in = 10 m/s is estimated to obtain Ns = 2.5 times. The theoretical efficiency values are calculated using the formula (with D pi as the particle size from the cutting) [7] .

Venturi scrubber design
The flow rate used to determine the velocity of producer gas in the venturi with V = 10 m/s is determined by the formula [8] ˙ The amount of water production in the venturi scrubber is determined by the formula [7] ˙ The next step is to determine the venturi size design, with the initial parameters searched using the standard deviation with the formula  Table 7 Parameter of the preliminary data of rotary separator [6] .
No. Specified data Value 1.
Size of inlet separator ( Hc ) 820 mm The specification of d cut based on ηd alloy with efficiency collection for particle size of 5 μm is shown in Table 6 . Scrubber power, pressure decrease and water/L /G ratio are determined by the following formula [8]

Rotary separator design
This is designed based on the particle separation techniques using the centrifugal force and speed for each organic MSW ash particle as shown in the formula [7] d p = 18 · V t · μ g ρ f − ρ p 1 / 2 (13) Based on Table 7 , the Vt value of 8.09 m /s, is used as a reference for selecting the exhaust fan to form a forced flow in the rotary separator system.

Quality examination procedure
The experiments are carried out by varying the discharge blower set with regulators at 100 V, 175 V, and 250 V by setting multi IGCS on water discharge scrubbing at 1.26 l/min, 2.62 l/min, 3.33 l/min, with a variation of the rotary separator suction fan by 0.9 m/s, 3.4 m/s, 4.4 m/s.

Declaration of Competing Interest
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.