The possibility of underground gasification of lignite from Polish deposits

Bielowicz, Barbara; Kasiński, Jacek Robert

doi:10.1016/j.coal.2014.06.025

Cited by 25 publications

(25 citation statements)

References 9 publications

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“…Length of the Graben is about 40 km in width from 1.5 to 3.5 km and a depth of 150 to 350 m. By the classification, these lignite deposits belongs to the soft, high--huminite brown coals type [1].…”

Section: Figmentioning

confidence: 98%

“…2) are located directly on the remains of the Oligocene sediments. The Kleszczów Graben forms the easternmost part of the Tertiary graben system, which occurs on the North European Paleozoic platform, in the foreland of the Polish Carpathians Lignite deposits are located within the Kleszczów Graben [1]. The deposits are located in the southern part of the Middle Poland Synclinorium.…”

Section: Figmentioning

confidence: 99%

“…Miocene sediments in the area of the salt dome lie directly on the residually preserved Oligocene sediments, and in the remaining area in the karst limestone and Upper Jurassic limestones and Upper Cretaceous opoka. They provide both a tectonic border of the Kleszczów Graben [1].…”

Section: Figmentioning

confidence: 99%

“…Within these deposits four complexes are separated: Sub-carbon, carbon, carbon--clay and clay-covered sandy sediments of the Pleistocene with a thickness of up to over 100 m. Thickness of the coal exceeding repeatedly 50 m. The complex carbon collapse gradually to the west with increasing its thickness [1].…”

Section: Figmentioning

confidence: 99%

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Geochemical characteristics of Neogene methane-bearing lignite of the Bełchatów region

Maruta

Zakrzewski

2017

drill

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Section: Figmentioning

confidence: 98%

Section: Figmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

See 2 more Smart Citations

Geochemical characteristics of Neogene methane-bearing lignite of the Bełchatów region

Maruta

Zakrzewski

2017

drill

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“…(2013), Kapusta dkk. (2013), Bielowicz and Kasiński (2014), Imran dkk. (2014) memperkirakan bahwa hanya ± 16% dari batubara dunia yang dapat ditambang secara ekonomis.…”

Section: Pendahuluanunclassified

Potensi batubara untuk pengembangan gasifikasi bawah permukaan : Studi kasus Desa Macang Sakti, Provinsi Sumatera Selatan

Purnama¹,

Subarna²,

Sendjadja

et al. 2017

JTMB

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ABSTRAKBatubara yang cocok untuk kegiatan gasifikasi bawah permukaan harus memenuhi persyaratan, antara lain kondisi geologis, ketebalan, kedalaman, kadar air total dan kadar abu. Berdasarkan persyaratan ini, tidak semua batubara dalam bisa dimanfaatkan untuk kegiatan gasifikasi bawah permukaan. Kegiatan eksplorasi batubara perlu dilakukan untuk meminimalisasi risiko geologis dan untuk mengetahui kondisi batubaranya. Berdasarkan hasil permodelan, ditemukan lapisan batubara D dengan kriteria kedalaman 200-300 m, ketebalan >5 m, kadar total air lembab+kadar abu <60%, nilai kalor 4.912-6.275 kkal/kg, reflektansi vitrinit 0,23-0,44 (lignit-subbituminus). Perhitungan sumber daya batubara dengan menggunakan software yang ada dan mengacu pada aturan SNI 5015-2011, menghasilkan sumberdaya tereka 3.316.578 ton, tertunjuk 1.909.560 ton dan terukur 2.479.951 ton.Kata kunci: batubara macang sakti, kualitas, gasifikasi batubara bawah permukaan, perhitungan sumberdaya. 4,912-6,275 kcal/kg, a vitrinite reflectance of 0.23-0.44 (lignite-sub bituminous). Calculation of the coal resource is conducted by using software and applying SNI 5015-2011, resulting in inferred resource of 3,316,578 tons, indicated resource of 1,909,560 tons and measured resource of 2,479,951 tons ABSTRACT

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Movable injection point–based syngas production in the context of underground coal gasification

Kashyap

Vairakannu

2020

Int J Energy Res

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Summary Underground coal gasification (UCG) has been proven as a viable technology for the generation of high calorific value syngas using deep mine coal seams. The use of multiple injection points/movable injection point method could be an alternate technique for efficient gasification of high ash Indian coals. In this context, the present study is focused on evaluating the heating value of syngas using a variety of gasifying agents such as pure O2, air, humidified O2, and CO2‐O2 dual‐stage gasification under movable injection method for high ash coals. It is found that the use of movable injection point method had significantly increased the heating value of the product gas, compared with the fixed point injection method. For high and low ash coal under pure O2 gasification, the calorific value of syngas obtained using movable injection point is 123.2 and 153.9 kJ/mol, which are 33.5% and 24.3% higher than the syngas calorific value obtained using fixed injection point, respectively. Further, the air as a gasification agent for high ash coals had increased the gross calorific value of the syngas by 24%, using this technology. The results of high ash coal gasification using humidified oxygen at optimum conditions (0.027‐kg moisture/kg dry O2) and CO2‐O2 gas had enhanced the syngas calorific value by 12.6% and 5%, respectively. Humidified O2 and CO2‐O2 gasifying agents produced a high‐quality syngas with the calorific value of 190 kJ/mol, among the gasifying agents used. The experimental results had shown that the movable injection point method is found to be a better alternative for the generation of calorific value‐enriched syngas using high ash‐based Indian coals.

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The possibility of underground gasification of lignite from Polish deposits

Cited by 25 publications

References 9 publications

Geochemical characteristics of Neogene methane-bearing lignite of the Bełchatów region

Geochemical characteristics of Neogene methane-bearing lignite of the Bełchatów region

Potensi batubara untuk pengembangan gasifikasi bawah permukaan : Studi kasus Desa Macang Sakti, Provinsi Sumatera Selatan

Movable injection point–based syngas production in the context of underground coal gasification

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